Fundies. English
Segment disclosures
Company overviewState Auto Financial CORP
Each reported dimension combination stays separate. Revenue and operating income are shown as reported, with their dates and sources.
Revenue · Reported segment facts
30 dimension combinations 473 retained observations 43 reported periods
Counts describe retained dimensioned rows only. Periods and members can change across reports, and this view does not infer missing values or expected segment totals.
Operating Segments · Business Insurance Segments
Consolidation Items · Statement Business Segments
Source dimensions
srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=stfc:BusinessInsuranceSegmentsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2021-01-01 – 2021-03-31 | 148700000 | USD | 20210507 | Open filing evidence |
| 2020-04-01 – 2020-06-30 | 137900000 | USD | 20200807 | Open filing evidence |
| 2020-01-01 – 2020-06-30 | 270300000 | USD | 20200807 | Open filing evidence |
| 2020-01-01 – 2020-03-31 | 132400000 | USD | 20210507 | Open filing evidence |
| 2019-07-01 – 2019-09-30 | 127000000 | USD | 2019-11-01 · 17:09:09.000Z | Open filing evidence |
| 2019-01-01 – 2019-09-30 | 361400000 | USD | 2019-11-01 · 17:09:09.000Z | Open filing evidence |
| 2019-04-01 – 2019-06-30 | 118000000 | USD | 20200807 | Open filing evidence |
| 2019-01-01 – 2019-06-30 | 234400000 | USD | 20200807 | Open filing evidence |
| 2019-01-01 – 2019-03-31 | 116400000 | USD | 20200507 | Open filing evidence |
| 2018-07-01 – 2018-09-30 | 115200000 | USD | 2019-11-01 · 17:09:09.000Z | Open filing evidence |
| 2018-01-01 – 2018-09-30 | 345700000 | USD | 2019-11-01 · 17:09:09.000Z | Open filing evidence |
| 2018-04-01 – 2018-06-30 | 115600000 | USD | 2019-08-02 · 14:12:53.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 230500000 | USD | 2019-08-02 · 14:12:53.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 114900000 | USD | 20190503 | Open filing evidence |
| 2017-07-01 – 2017-09-30 | 114300000 | USD | 2018-11-05 · 19:59:55.000Z | Open filing evidence |
| 2017-01-01 – 2017-09-30 | 341800000 | USD | 2018-11-05 · 19:59:55.000Z | Open filing evidence |
Operating Segments · Insurance Segments
Consolidation Items · Statement Business Segments
Source dimensions
srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=stfc:InsuranceSegmentsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2021-04-01 – 2021-06-30 | 369900000 | USD | 20210806 | Open filing evidence |
| 2021-01-01 – 2021-06-30 | 725800000 | USD | 20210806 | Open filing evidence |
| 2021-01-01 – 2021-03-31 | 355900000 | USD | 20210507 | Open filing evidence |
| 2020-07-01 – 2020-09-30 | 353200000 | USD | 20201106 | Open filing evidence |
| 2020-01-01 – 2020-09-30 | 1024400000 | USD | 20201106 | Open filing evidence |
| 2020-04-01 – 2020-06-30 | 340700000 | USD | 20210806 | Open filing evidence |
| 2020-01-01 – 2020-06-30 | 671200000 | USD | 20210806 | Open filing evidence |
| 2020-01-01 – 2020-03-31 | 330500000 | USD | 20210507 | Open filing evidence |
| 2019-07-01 – 2019-09-30 | 319600000 | USD | 20201106 | Open filing evidence |
| 2019-01-01 – 2019-09-30 | 930000000 | USD | 20201106 | Open filing evidence |
| 2019-04-01 – 2019-06-30 | 307700000 | USD | 20200807 | Open filing evidence |
| 2019-01-01 – 2019-06-30 | 610400000 | USD | 20200807 | Open filing evidence |
| 2019-01-01 – 2019-03-31 | 302700000 | USD | 20200507 | Open filing evidence |
| 2018-07-01 – 2018-09-30 | 306800000 | USD | 2019-11-01 · 17:09:09.000Z | Open filing evidence |
| 2018-01-01 – 2018-09-30 | 929200000 | USD | 2019-11-01 · 17:09:09.000Z | Open filing evidence |
| 2018-04-01 – 2018-06-30 | 307500000 | USD | 2019-08-02 · 14:12:53.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 622400000 | USD | 2019-08-02 · 14:12:53.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 314900000 | USD | 20190503 | Open filing evidence |
| 2017-07-01 – 2017-09-30 | 319000000 | USD | 2018-11-05 · 19:59:55.000Z | Open filing evidence |
| 2017-01-01 – 2017-09-30 | 957200000 | USD | 2018-11-05 · 19:59:55.000Z | Open filing evidence |
Operating Segments · Investment Operations Segment
Consolidation Items · Statement Business Segments
Source dimensions
srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=stfc:InvestmentOperationsSegmentMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2021-04-01 – 2021-06-30 | 44400000 | USD | 20210806 | Open filing evidence |
| 2021-01-01 – 2021-06-30 | 100200000 | USD | 20210806 | Open filing evidence |
| 2021-01-01 – 2021-03-31 | 55800000 | USD | 20210507 | Open filing evidence |
| 2020-04-01 – 2020-06-30 | 93600000 | USD | 20210806 | Open filing evidence |
| 2020-01-01 – 2020-06-30 | -22700000 | USD | 20210806 | Open filing evidence |
| 2020-01-01 – 2020-03-31 | -116300000 | USD | 20210507 | Open filing evidence |
| 2019-07-01 – 2019-09-30 | 14300000 | USD | 2019-11-01 · 17:09:09.000Z | Open filing evidence |
| 2019-01-01 – 2019-09-30 | 110600000 | USD | 2019-11-01 · 17:09:09.000Z | Open filing evidence |
| 2019-04-01 – 2019-06-30 | 32000000 | USD | 20200807 | Open filing evidence |
| 2019-01-01 – 2019-06-30 | 96300000 | USD | 20200807 | Open filing evidence |
| 2019-01-01 – 2019-03-31 | 64300000 | USD | 20200507 | Open filing evidence |
| 2018-07-01 – 2018-09-30 | 38600000 | USD | 2019-11-01 · 17:09:09.000Z | Open filing evidence |
| 2018-01-01 – 2018-09-30 | 80400000 | USD | 2019-11-01 · 17:09:09.000Z | Open filing evidence |
| 2018-04-01 – 2018-06-30 | 33600000 | USD | 2019-08-02 · 14:12:53.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 41800000 | USD | 2019-08-02 · 14:12:53.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 8200000 | USD | 20190503 | Open filing evidence |
| 2017-07-01 – 2017-09-30 | 38900000 | USD | 2018-11-05 · 19:59:55.000Z | Open filing evidence |
| 2017-01-01 – 2017-09-30 | 100300000 | USD | 2018-11-05 · 19:59:55.000Z | Open filing evidence |
Operating Segments · Personal Insurance Segments
Consolidation Items · Statement Business Segments
Source dimensions
srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=stfc:PersonalInsuranceSegmentsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2021-07-01 – 2021-09-30 | 217200000 | USD | 20211104 | Open filing evidence |
| 2021-01-01 – 2021-09-30 | 638100000 | USD | 20211104 | Open filing evidence |
| 2021-01-01 – 2021-03-31 | 207800000 | USD | 20210507 | Open filing evidence |
| 2020-07-01 – 2020-09-30 | 208800000 | USD | 20211104 | Open filing evidence |
| 2020-01-01 – 2020-09-30 | 609700000 | USD | 20211104 | Open filing evidence |
| 2020-04-01 – 2020-06-30 | 202800000 | USD | 20200807 | Open filing evidence |
| 2020-01-01 – 2020-06-30 | 400900000 | USD | 20200807 | Open filing evidence |
| 2020-01-01 – 2020-03-31 | 198100000 | USD | 20210507 | Open filing evidence |
| 2019-07-01 – 2019-09-30 | 192700000 | USD | 2019-11-01 · 17:09:09.000Z | Open filing evidence |
| 2019-01-01 – 2019-09-30 | 562500000 | USD | 2019-11-01 · 17:09:09.000Z | Open filing evidence |
| 2019-04-01 – 2019-06-30 | 188300000 | USD | 20200807 | Open filing evidence |
| 2019-01-01 – 2019-06-30 | 369800000 | USD | 20200807 | Open filing evidence |
| 2019-01-01 – 2019-03-31 | 181500000 | USD | 20200507 | Open filing evidence |
| 2018-07-01 – 2018-09-30 | 173000000 | USD | 2019-11-01 · 17:09:09.000Z | Open filing evidence |
| 2018-01-01 – 2018-09-30 | 494200000 | USD | 2019-11-01 · 17:09:09.000Z | Open filing evidence |
| 2018-04-01 – 2018-06-30 | 164900000 | USD | 2019-08-02 · 14:12:53.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 321200000 | USD | 2019-08-02 · 14:12:53.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 156300000 | USD | 20190503 | Open filing evidence |
| 2017-07-01 – 2017-09-30 | 144100000 | USD | 2018-11-05 · 19:59:55.000Z | Open filing evidence |
| 2017-01-01 – 2017-09-30 | 430600000 | USD | 2018-11-05 · 19:59:55.000Z | Open filing evidence |
Operating Segments · Specialty Insurance Segment
Consolidation Items · Statement Business Segments
Source dimensions
srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=stfc:SpecialtyInsuranceSegmentMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2021-07-01 – 2021-09-30 | 200000 | USD | 20211104 | Open filing evidence |
| 2021-01-01 – 2021-09-30 | -1200000 | USD | 20211104 | Open filing evidence |
| 2021-01-01 – 2021-03-31 | -600000 | USD | 20210507 | Open filing evidence |
| 2020-07-01 – 2020-09-30 | 0 | USD | 20211104 | Open filing evidence |
| 2020-01-01 – 2020-09-30 | 0 | USD | 20211104 | Open filing evidence |
| 2020-04-01 – 2020-06-30 | 0 | USD | 20200807 | Open filing evidence |
| 2020-01-01 – 2020-06-30 | 0 | USD | 20200807 | Open filing evidence |
| 2020-01-01 – 2020-03-31 | 0 | USD | 20210507 | Open filing evidence |
| 2019-07-01 – 2019-09-30 | -100000 | USD | 20201106 | Open filing evidence |
| 2019-01-01 – 2019-09-30 | 6100000 | USD | 20201106 | Open filing evidence |
| 2019-04-01 – 2019-06-30 | 1400000 | USD | 20200807 | Open filing evidence |
| 2019-01-01 – 2019-06-30 | 6200000 | USD | 20200807 | Open filing evidence |
| 2019-01-01 – 2019-03-31 | 4800000 | USD | 20200507 | Open filing evidence |
| 2018-07-01 – 2018-09-30 | 18600000 | USD | 2019-11-01 · 17:09:09.000Z | Open filing evidence |
| 2018-01-01 – 2018-09-30 | 89300000 | USD | 2019-11-01 · 17:09:09.000Z | Open filing evidence |
| 2018-04-01 – 2018-06-30 | 27000000 | USD | 2019-08-02 · 14:12:53.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 70700000 | USD | 2019-08-02 · 14:12:53.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 43700000 | USD | 20190503 | Open filing evidence |
| 2017-07-01 – 2017-09-30 | 60600000 | USD | 2018-11-05 · 19:59:55.000Z | Open filing evidence |
| 2017-01-01 – 2017-09-30 | 184800000 | USD | 2018-11-05 · 19:59:55.000Z | Open filing evidence |
Operating Segments · All Other Segments
Consolidation Items · Statement Business Segments
Source dimensions
srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=us-gaap:AllOtherSegmentsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2020-01-01 – 2020-03-31 | 600000 | USD | 20210507 | Open filing evidence |
| 2019-01-01 – 2019-12-31 | 2400000 | USD | 20200227 | Open filing evidence |
| 2019-07-01 – 2019-09-30 | 600000 | USD | 20201106 | Open filing evidence |
| 2019-01-01 – 2019-09-30 | 1600000 | USD | 20201106 | Open filing evidence |
| 2019-01-01 – 2019-03-31 | 600000 | USD | 20200507 | Open filing evidence |
| 2018-01-01 – 2018-12-31 | 2600000 | USD | 20200227 | Open filing evidence |
| 2018-07-01 – 2018-09-30 | 600000 | USD | 2019-11-01 · 17:09:09.000Z | Open filing evidence |
| 2018-01-01 – 2018-09-30 | 1800000 | USD | 2019-11-01 · 17:09:09.000Z | Open filing evidence |
| 2018-04-01 – 2018-06-30 | 600000 | USD | 2019-08-02 · 14:12:53.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 1200000 | USD | 2019-08-02 · 14:12:53.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 600000 | USD | 20190503 | Open filing evidence |
| 2017-01-01 – 2017-12-31 | 2300000 | USD | 20200227 | Open filing evidence |
| 2017-07-01 – 2017-09-30 | 500000 | USD | 2018-11-05 · 19:59:55.000Z | Open filing evidence |
| 2017-01-01 – 2017-09-30 | 1700000 | USD | 2018-11-05 · 19:59:55.000Z | Open filing evidence |
| 2016-01-01 – 2016-12-31 | 2300000 | USD | 20190315 | Open filing evidence |
Corporate And Other · All Other Segments
Consolidation Items · Statement Business Segments
Source dimensions
us-gaap:ConsolidationItemsAxis=us-gaap:CorporateAndOtherMember;us-gaap:StatementBusinessSegmentsAxis=us-gaap:AllOtherSegmentsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2016-01-01 – 2016-03-31 | 600000 | USD | 20160504 | Open filing evidence |
| 2015-01-01 – 2015-12-31 | 1700000 | USD | 20160302 | Open filing evidence |
| 2015-07-01 – 2015-09-30 | 500000 | USD | 20151104 | Open filing evidence |
| 2015-01-01 – 2015-09-30 | 1200000 | USD | 20151104 | Open filing evidence |
| 2015-04-01 – 2015-06-30 | 700000 | USD | 20150805 | Open filing evidence |
| 2015-01-01 – 2015-06-30 | 700000 | USD | 20150805 | Open filing evidence |
| 2015-01-01 – 2015-03-31 | 0 | USD | 20160504 | Open filing evidence |
| 2014-01-01 – 2014-12-31 | 3200000 | USD | 20160302 | Open filing evidence |
| 2014-07-01 – 2014-09-30 | 600000 | USD | 20151104 | Open filing evidence |
| 2014-01-01 – 2014-09-30 | 1400000 | USD | 20151104 | Open filing evidence |
| 2014-04-01 – 2014-06-30 | 300000 | USD | 20150805 | Open filing evidence |
| 2014-01-01 – 2014-06-30 | 800000 | USD | 20150805 | Open filing evidence |
| 2014-01-01 – 2014-03-31 | 500000 | USD | 20150506 | Open filing evidence |
| 2013-01-01 – 2013-12-31 | 2000000 | USD | 20160302 | Open filing evidence |
| 2013-07-01 – 2013-09-30 | 400000 | USD | 20141105 | Open filing evidence |
| 2013-01-01 – 2013-09-30 | 1400000 | USD | 20141105 | Open filing evidence |
| 2013-04-01 – 2013-06-30 | 600000 | USD | 20140805 | Open filing evidence |
| 2013-01-01 – 2013-06-30 | 1000000 | USD | 20140805 | Open filing evidence |
| 2013-01-01 – 2013-03-31 | 400000 | USD | 20140501 | Open filing evidence |
| 2012-01-01 – 2012-12-31 | 3800000 | USD | 20150303 | Open filing evidence |
| 2011-01-01 – 2011-12-31 | 1400000 | USD | 20140306 | Open filing evidence |
Intersegment Elimination · Intersegment
Consolidation Items · Statement Business Segments
Source dimensions
us-gaap:ConsolidationItemsAxis=us-gaap:IntersegmentEliminationMember;us-gaap:StatementBusinessSegmentsAxis=stfc:IntersegmentMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2016-01-01 – 2016-03-31 | 1400000 | USD | 20160504 | Open filing evidence |
| 2015-01-01 – 2015-12-31 | 5600000 | USD | 20160302 | Open filing evidence |
| 2015-07-01 – 2015-09-30 | 1400000 | USD | 20151104 | Open filing evidence |
| 2015-01-01 – 2015-09-30 | 4200000 | USD | 20151104 | Open filing evidence |
| 2015-04-01 – 2015-06-30 | 1400000 | USD | 20150805 | Open filing evidence |
| 2015-01-01 – 2015-06-30 | 2800000 | USD | 20150805 | Open filing evidence |
| 2015-01-01 – 2015-03-31 | 1400000 | USD | 20160504 | Open filing evidence |
| 2014-01-01 – 2014-12-31 | 5100000 | USD | 20160302 | Open filing evidence |
| 2014-07-01 – 2014-09-30 | 1300000 | USD | 20151104 | Open filing evidence |
| 2014-01-01 – 2014-09-30 | 3900000 | USD | 20151104 | Open filing evidence |
| 2014-04-01 – 2014-06-30 | 1300000 | USD | 20150805 | Open filing evidence |
| 2014-01-01 – 2014-06-30 | 2600000 | USD | 20150805 | Open filing evidence |
| 2014-01-01 – 2014-03-31 | 1300000 | USD | 20150506 | Open filing evidence |
| 2013-01-01 – 2013-12-31 | 5100000 | USD | 20160302 | Open filing evidence |
| 2013-07-01 – 2013-09-30 | 1400000 | USD | 20141105 | Open filing evidence |
| 2013-01-01 – 2013-09-30 | 4000000 | USD | 20141105 | Open filing evidence |
| 2013-04-01 – 2013-06-30 | 1300000 | USD | 20140805 | Open filing evidence |
| 2013-01-01 – 2013-06-30 | 2600000 | USD | 20140805 | Open filing evidence |
| 2013-01-01 – 2013-03-31 | 1300000 | USD | 20140501 | Open filing evidence |
| 2012-01-01 – 2012-12-31 | 9500000 | USD | 20150303 | Open filing evidence |
| 2011-01-01 – 2011-12-31 | 10500000 | USD | 20140306 | Open filing evidence |
Operating Segments · Business Insurance Segments
Consolidation Items · Statement Business Segments
Source dimensions
us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=stfc:BusinessInsuranceSegmentsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 115600000 | USD | 2018-08-07 · 19:32:54.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 230500000 | USD | 2018-08-07 · 19:32:54.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 114900000 | USD | 2018-05-09 · 20:00:57.000Z | Open filing evidence |
| 2017-07-01 – 2017-09-30 | 114300000 | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2017-01-01 – 2017-09-30 | 341800000 | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 114500000 Restated | USD | 2018-08-07 · 19:32:54.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 227500000 Restated | USD | 2018-08-07 · 19:32:54.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 113000000 Restated | USD | 2018-05-09 · 20:00:57.000Z | Open filing evidence |
| 2016-07-01 – 2016-09-30 | 116000000 Restated | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2016-01-01 – 2016-09-30 | 356300000 Restated | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2016-04-01 – 2016-06-30 | 111600000 Restated | USD | 2017-08-08 · 18:11:00.000Z | Open filing evidence |
| 2016-01-01 – 2016-06-30 | 223000000 Restated | USD | 2017-08-08 · 18:11:00.000Z | Open filing evidence |
| 2016-01-01 – 2016-03-31 | 111400000 Restated | USD | 2017-05-03 · 18:57:12.000Z | Open filing evidence |
| 2015-07-01 – 2015-09-30 | 119200000 Restated | USD | 2016-11-07 · 21:10:14.000Z | Open filing evidence |
| 2015-01-01 – 2015-09-30 | 355300000 Restated | USD | 2016-11-07 · 21:10:14.000Z | Open filing evidence |
| 2015-04-01 – 2015-06-30 | 118800000 Restated | USD | 20160808 | Open filing evidence |
| 2015-01-01 – 2015-06-30 | 236100000 Restated | USD | 20160808 | Open filing evidence |
| 2015-01-01 – 2015-03-31 | 117300000 Restated | USD | 20160504 | Open filing evidence |
| 2014-07-01 – 2014-09-30 | 96000000 | USD | 20151104 | Open filing evidence |
| 2014-01-01 – 2014-09-30 | 285400000 | USD | 20151104 | Open filing evidence |
| 2014-04-01 – 2014-06-30 | 95900000 | USD | 20150805 | Open filing evidence |
| 2014-01-01 – 2014-06-30 | 189400000 | USD | 20150805 | Open filing evidence |
| 2014-01-01 – 2014-03-31 | 93500000 | USD | 20150506 | Open filing evidence |
| 2013-07-01 – 2013-09-30 | 92900000 | USD | 20141105 | Open filing evidence |
| 2013-01-01 – 2013-09-30 | 271000000 | USD | 20141105 | Open filing evidence |
| 2013-04-01 – 2013-06-30 | 89600000 | USD | 20140805 | Open filing evidence |
| 2013-01-01 – 2013-06-30 | 178100000 | USD | 20140805 | Open filing evidence |
| 2013-01-01 – 2013-03-31 | 88500000 | USD | 20140501 | Open filing evidence |
Operating Segments · Insurance Segments
Consolidation Items · Statement Business Segments
Source dimensions
us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=stfc:InsuranceSegmentsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 307500000 | USD | 2018-08-07 · 19:32:54.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 622400000 | USD | 2018-08-07 · 19:32:54.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 314900000 | USD | 2018-05-09 · 20:00:57.000Z | Open filing evidence |
| 2017-07-01 – 2017-09-30 | 319000000 | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2017-01-01 – 2017-09-30 | 956400000 | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 320100000 | USD | 2018-08-07 · 19:32:54.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 638200000 Restated | USD | 2018-08-07 · 19:32:54.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 318100000 Restated | USD | 2018-05-09 · 20:00:57.000Z | Open filing evidence |
| 2016-07-01 – 2016-09-30 | 325800000 | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2016-01-01 – 2016-09-30 | 968100000 | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2016-04-01 – 2016-06-30 | 322400000 | USD | 2017-08-08 · 18:11:00.000Z | Open filing evidence |
| 2016-01-01 – 2016-06-30 | 642300000 | USD | 2017-08-08 · 18:11:00.000Z | Open filing evidence |
| 2016-01-01 – 2016-03-31 | 319900000 | USD | 2017-05-03 · 18:57:12.000Z | Open filing evidence |
| 2015-07-01 – 2015-09-30 | 319700000 | USD | 2016-11-07 · 21:10:14.000Z | Open filing evidence |
| 2015-01-01 – 2015-09-30 | 946500000 | USD | 2016-11-07 · 21:10:14.000Z | Open filing evidence |
| 2015-04-01 – 2015-06-30 | 311500000 | USD | 20160808 | Open filing evidence |
| 2015-01-01 – 2015-06-30 | 626800000 | USD | 20160808 | Open filing evidence |
| 2015-01-01 – 2015-03-31 | 315300000 | USD | 20160504 | Open filing evidence |
| 2014-07-01 – 2014-09-30 | 270200000 | USD | 20151104 | Open filing evidence |
| 2014-01-01 – 2014-09-30 | 801000000 | USD | 20151104 | Open filing evidence |
| 2014-04-01 – 2014-06-30 | 268300000 | USD | 20150805 | Open filing evidence |
| 2014-01-01 – 2014-06-30 | 530800000 | USD | 20150805 | Open filing evidence |
| 2014-01-01 – 2014-03-31 | 262500000 | USD | 20150506 | Open filing evidence |
| 2013-07-01 – 2013-09-30 | 266000000 | USD | 20141105 | Open filing evidence |
| 2013-01-01 – 2013-09-30 | 790800000 | USD | 20141105 | Open filing evidence |
| 2013-04-01 – 2013-06-30 | 263500000 | USD | 20140805 | Open filing evidence |
| 2013-01-01 – 2013-06-30 | 524800000 | USD | 20140805 | Open filing evidence |
| 2013-01-01 – 2013-03-31 | 261300000 | USD | 20140501 | Open filing evidence |
| 2012-07-01 – 2012-09-30 | 261400000 | USD | 20131106 | Open filing evidence |
| 2012-01-01 – 2012-09-30 | 774700000 | USD | 20131106 | Open filing evidence |
| 2012-04-01 – 2012-06-30 | 258400000 | USD | 20130806 | Open filing evidence |
| 2012-01-01 – 2012-06-30 | 513300000 | USD | 20130806 | Open filing evidence |
Operating Segments · Insurance Segments · Business Insurance
Consolidation Items · Statement Business Segments · Subsegments
Source dimensions
us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=stfc:InsuranceSegmentsMember;us-gaap:SubsegmentsAxis=stfc:BusinessInsuranceMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2013-07-01 – 2013-09-30 | 92900000 | USD | 20131106 | Open filing evidence |
| 2013-01-01 – 2013-09-30 | 271000000 | USD | 20131106 | Open filing evidence |
| 2013-04-01 – 2013-06-30 | 89600000 | USD | 20130806 | Open filing evidence |
| 2013-01-01 – 2013-06-30 | 178100000 | USD | 20130806 | Open filing evidence |
| 2012-07-01 – 2012-09-30 | 83400000 | USD | 20131106 | Open filing evidence |
| 2012-01-01 – 2012-09-30 | 240100000 | USD | 20131106 | Open filing evidence |
| 2012-04-01 – 2012-06-30 | 79400000 | USD | 20130806 | Open filing evidence |
| 2012-01-01 – 2012-06-30 | 156700000 | USD | 20130806 | Open filing evidence |
Operating Segments · Insurance Segments · Personal Insurance
Consolidation Items · Statement Business Segments · Subsegments
Source dimensions
us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=stfc:InsuranceSegmentsMember;us-gaap:SubsegmentsAxis=stfc:PersonalInsuranceMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2013-07-01 – 2013-09-30 | 116400000 | USD | 20131106 | Open filing evidence |
| 2013-01-01 – 2013-09-30 | 348300000 | USD | 20131106 | Open filing evidence |
| 2013-04-01 – 2013-06-30 | 117200000 | USD | 20130806 | Open filing evidence |
| 2013-01-01 – 2013-06-30 | 231900000 | USD | 20130806 | Open filing evidence |
| 2012-07-01 – 2012-09-30 | 117400000 | USD | 20131106 | Open filing evidence |
| 2012-01-01 – 2012-09-30 | 352100000 | USD | 20131106 | Open filing evidence |
| 2012-04-01 – 2012-06-30 | 117200000 | USD | 20130806 | Open filing evidence |
| 2012-01-01 – 2012-06-30 | 234700000 | USD | 20130806 | Open filing evidence |
Operating Segments · Insurance Segments · Specialty Insurance
Consolidation Items · Statement Business Segments · Subsegments
Source dimensions
us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=stfc:InsuranceSegmentsMember;us-gaap:SubsegmentsAxis=stfc:SpecialtyInsuranceMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2013-07-01 – 2013-09-30 | 56700000 | USD | 20131106 | Open filing evidence |
| 2013-01-01 – 2013-09-30 | 171500000 | USD | 20131106 | Open filing evidence |
| 2013-04-01 – 2013-06-30 | 56700000 | USD | 20130806 | Open filing evidence |
| 2013-01-01 – 2013-06-30 | 114800000 | USD | 20130806 | Open filing evidence |
| 2012-07-01 – 2012-09-30 | 60600000 | USD | 20131106 | Open filing evidence |
| 2012-01-01 – 2012-09-30 | 182500000 | USD | 20131106 | Open filing evidence |
| 2012-04-01 – 2012-06-30 | 61800000 | USD | 20130806 | Open filing evidence |
| 2012-01-01 – 2012-06-30 | 121900000 | USD | 20130806 | Open filing evidence |
Operating Segments · Investment Operations Segment
Consolidation Items · Statement Business Segments
Source dimensions
us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=stfc:InvestmentOperationsSegmentMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 33600000 | USD | 2018-08-07 · 19:32:54.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 41800000 | USD | 2018-08-07 · 19:32:54.000Z | Open filing evidence |
| 2017-07-01 – 2017-09-30 | 38900000 | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2017-01-01 – 2017-09-30 | 100300000 | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 34900000 | USD | 2018-08-07 · 19:32:54.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 61400000 | USD | 2018-08-07 · 19:32:54.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 26500000 | USD | 2018-05-09 · 20:00:57.000Z | Open filing evidence |
| 2016-07-01 – 2016-09-30 | 26400000 | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2016-01-01 – 2016-09-30 | 70700000 | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2016-04-01 – 2016-06-30 | 25600000 | USD | 2017-08-08 · 18:11:00.000Z | Open filing evidence |
| 2016-01-01 – 2016-06-30 | 44300000 | USD | 2017-08-08 · 18:11:00.000Z | Open filing evidence |
| 2016-01-01 – 2016-03-31 | 18700000 | USD | 2017-05-03 · 18:57:12.000Z | Open filing evidence |
| 2015-07-01 – 2015-09-30 | 29500000 | USD | 2016-11-07 · 21:10:14.000Z | Open filing evidence |
| 2015-01-01 – 2015-09-30 | 74300000 | USD | 2016-11-07 · 21:10:14.000Z | Open filing evidence |
| 2015-04-01 – 2015-06-30 | 25200000 | USD | 20160808 | Open filing evidence |
| 2015-01-01 – 2015-06-30 | 44800000 | USD | 20160808 | Open filing evidence |
| 2015-01-01 – 2015-03-31 | 19600000 | USD | 20160504 | Open filing evidence |
| 2014-07-01 – 2014-09-30 | 20500000 | USD | 20151104 | Open filing evidence |
| 2014-01-01 – 2014-09-30 | 74600000 | USD | 20151104 | Open filing evidence |
| 2014-04-01 – 2014-06-30 | 25800000 | USD | 20150805 | Open filing evidence |
| 2014-01-01 – 2014-06-30 | 54100000 | USD | 20150805 | Open filing evidence |
| 2014-01-01 – 2014-03-31 | 28300000 | USD | 20150506 | Open filing evidence |
| 2013-07-01 – 2013-09-30 | 26300000 | USD | 20141105 | Open filing evidence |
| 2013-01-01 – 2013-09-30 | 71100000 | USD | 20141105 | Open filing evidence |
| 2013-04-01 – 2013-06-30 | 21200000 | USD | 20140805 | Open filing evidence |
| 2013-01-01 – 2013-06-30 | 44800000 | USD | 20140805 | Open filing evidence |
| 2013-01-01 – 2013-03-31 | 23600000 | USD | 20140501 | Open filing evidence |
| 2012-07-01 – 2012-09-30 | 24200000 | USD | 20131106 | Open filing evidence |
| 2012-01-01 – 2012-09-30 | 76000000 | USD | 20131106 | Open filing evidence |
| 2012-04-01 – 2012-06-30 | 27200000 | USD | 20130806 | Open filing evidence |
| 2012-01-01 – 2012-06-30 | 51800000 | USD | 20130806 | Open filing evidence |
Operating Segments · Investment Operations Segment · Net Investment Income
Consolidation Items · Statement Business Segments · Subsegments
Source dimensions
us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=stfc:InvestmentOperationsSegmentMember;us-gaap:SubsegmentsAxis=stfc:NetInvestmentIncomeMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2013-07-01 – 2013-09-30 | 18800000 | USD | 20131106 | Open filing evidence |
| 2013-01-01 – 2013-09-30 | 55400000 | USD | 20131106 | Open filing evidence |
| 2013-04-01 – 2013-06-30 | 19700000 | USD | 20130806 | Open filing evidence |
| 2013-01-01 – 2013-06-30 | 36600000 | USD | 20130806 | Open filing evidence |
| 2012-07-01 – 2012-09-30 | 17200000 | USD | 20131106 | Open filing evidence |
| 2012-01-01 – 2012-09-30 | 55200000 | USD | 20131106 | Open filing evidence |
| 2012-04-01 – 2012-06-30 | 20500000 | USD | 20130806 | Open filing evidence |
| 2012-01-01 – 2012-06-30 | 38000000 | USD | 20130806 | Open filing evidence |
Operating Segments · Investment Operations Segment · Net Realized Capital Gains
Consolidation Items · Statement Business Segments · Subsegments
Source dimensions
us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=stfc:InvestmentOperationsSegmentMember;us-gaap:SubsegmentsAxis=stfc:NetRealizedCapitalGainsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2017-07-01 – 2017-09-30 | 20200000 | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2017-01-01 – 2017-09-30 | 43800000 | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 15800000 | USD | 2017-08-08 · 18:11:00.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 23600000 | USD | 2017-08-08 · 18:11:00.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 7800000 | USD | 2018-05-09 · 20:00:57.000Z | Open filing evidence |
| 2016-07-01 – 2016-09-30 | 8800000 | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2016-01-01 – 2016-09-30 | 16600000 | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2016-04-01 – 2016-06-30 | 6500000 | USD | 2017-08-08 · 18:11:00.000Z | Open filing evidence |
| 2016-01-01 – 2016-06-30 | 7800000 | USD | 2017-08-08 · 18:11:00.000Z | Open filing evidence |
| 2016-01-01 – 2016-03-31 | 1300000 | USD | 2017-05-03 · 18:57:12.000Z | Open filing evidence |
| 2015-07-01 – 2015-09-30 | 10800000 | USD | 2016-11-07 · 21:10:14.000Z | Open filing evidence |
| 2015-01-01 – 2015-09-30 | 20400000 | USD | 2016-11-07 · 21:10:14.000Z | Open filing evidence |
| 2015-04-01 – 2015-06-30 | 5400000 | USD | 20160808 | Open filing evidence |
| 2015-01-01 – 2015-06-30 | 9600000 | USD | 20160808 | Open filing evidence |
| 2015-01-01 – 2015-03-31 | 4200000 | USD | 20160504 | Open filing evidence |
| 2014-07-01 – 2014-09-30 | 1600000 | USD | 20151104 | Open filing evidence |
| 2014-01-01 – 2014-09-30 | 17600000 | USD | 20151104 | Open filing evidence |
| 2014-04-01 – 2014-06-30 | 5300000 | USD | 20150805 | Open filing evidence |
| 2014-01-01 – 2014-06-30 | 16000000 | USD | 20150805 | Open filing evidence |
| 2014-01-01 – 2014-03-31 | 10700000 | USD | 20150506 | Open filing evidence |
| 2013-07-01 – 2013-09-30 | 7500000 | USD | 20141105 | Open filing evidence |
| 2013-01-01 – 2013-09-30 | 15700000 | USD | 20141105 | Open filing evidence |
| 2013-04-01 – 2013-06-30 | 1500000 | USD | 20140805 | Open filing evidence |
| 2013-01-01 – 2013-06-30 | 8200000 | USD | 20140805 | Open filing evidence |
| 2013-01-01 – 2013-03-31 | 6700000 | USD | 20140501 | Open filing evidence |
| 2012-07-01 – 2012-09-30 | 7000000 | USD | 20131106 | Open filing evidence |
| 2012-01-01 – 2012-09-30 | 20800000 | USD | 20131106 | Open filing evidence |
| 2012-04-01 – 2012-06-30 | 6700000 | USD | 20130806 | Open filing evidence |
| 2012-01-01 – 2012-06-30 | 13800000 | USD | 20130806 | Open filing evidence |
Operating Segments · Personal Insurance Segments
Consolidation Items · Statement Business Segments
Source dimensions
us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=stfc:PersonalInsuranceSegmentsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 164900000 | USD | 2018-08-07 · 19:32:54.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 321200000 | USD | 2018-08-07 · 19:32:54.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 156300000 | USD | 2018-05-09 · 20:00:57.000Z | Open filing evidence |
| 2017-07-01 – 2017-09-30 | 144100000 | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2017-01-01 – 2017-09-30 | 430300000 | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 142900000 Restated | USD | 2018-08-07 · 19:32:54.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 286500000 Restated | USD | 2018-08-07 · 19:32:54.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 143600000 Restated | USD | 2018-05-09 · 20:00:57.000Z | Open filing evidence |
| 2016-07-01 – 2016-09-30 | 144500000 Restated | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2016-01-01 – 2016-09-30 | 433800000 Restated | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2016-04-01 – 2016-06-30 | 153100000 Restated | USD | 2017-08-08 · 18:11:00.000Z | Open filing evidence |
| 2016-01-01 – 2016-06-30 | 306600000 Restated | USD | 2017-08-08 · 18:11:00.000Z | Open filing evidence |
| 2016-01-01 – 2016-03-31 | 153500000 Restated | USD | 2017-05-03 · 18:57:12.000Z | Open filing evidence |
| 2015-07-01 – 2015-09-30 | 147200000 | USD | 2016-11-07 · 21:10:14.000Z | Open filing evidence |
| 2015-01-01 – 2015-09-30 | 445400000 | USD | 2016-11-07 · 21:10:14.000Z | Open filing evidence |
| 2015-04-01 – 2015-06-30 | 148200000 | USD | 20160808 | Open filing evidence |
| 2015-01-01 – 2015-06-30 | 298200000 | USD | 20160808 | Open filing evidence |
| 2015-01-01 – 2015-03-31 | 150000000 | USD | 20160504 | Open filing evidence |
| 2014-07-01 – 2014-09-30 | 112300000 | USD | 20151104 | Open filing evidence |
| 2014-01-01 – 2014-09-30 | 340300000 | USD | 20151104 | Open filing evidence |
| 2014-04-01 – 2014-06-30 | 113700000 | USD | 20150805 | Open filing evidence |
| 2014-01-01 – 2014-06-30 | 228000000 | USD | 20150805 | Open filing evidence |
| 2014-01-01 – 2014-03-31 | 114300000 | USD | 20150506 | Open filing evidence |
| 2013-07-01 – 2013-09-30 | 116400000 | USD | 20141105 | Open filing evidence |
| 2013-01-01 – 2013-09-30 | 348300000 | USD | 20141105 | Open filing evidence |
| 2013-04-01 – 2013-06-30 | 117200000 | USD | 20140805 | Open filing evidence |
| 2013-01-01 – 2013-06-30 | 231900000 | USD | 20140805 | Open filing evidence |
| 2013-01-01 – 2013-03-31 | 114700000 | USD | 20140501 | Open filing evidence |
Operating Segments · Specialty Insurance Segment
Consolidation Items · Statement Business Segments
Source dimensions
us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=stfc:SpecialtyInsuranceSegmentMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 27000000 | USD | 2018-08-07 · 19:32:54.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 70700000 | USD | 2018-08-07 · 19:32:54.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 43700000 | USD | 2018-05-09 · 20:00:57.000Z | Open filing evidence |
| 2017-07-01 – 2017-09-30 | 60600000 | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2017-01-01 – 2017-09-30 | 184300000 | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 62700000 | USD | 2018-08-07 · 19:32:54.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 124200000 Restated | USD | 2018-08-07 · 19:32:54.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 61500000 Restated | USD | 2018-05-09 · 20:00:57.000Z | Open filing evidence |
| 2016-07-01 – 2016-09-30 | 65300000 | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2016-01-01 – 2016-09-30 | 178000000 | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2016-04-01 – 2016-06-30 | 57700000 | USD | 2017-08-08 · 18:11:00.000Z | Open filing evidence |
| 2016-01-01 – 2016-06-30 | 112700000 | USD | 2017-08-08 · 18:11:00.000Z | Open filing evidence |
| 2016-01-01 – 2016-03-31 | 55000000 | USD | 2017-05-03 · 18:57:12.000Z | Open filing evidence |
| 2015-07-01 – 2015-09-30 | 53300000 Restated | USD | 2016-11-07 · 21:10:14.000Z | Open filing evidence |
| 2015-01-01 – 2015-09-30 | 145800000 Restated | USD | 2016-11-07 · 21:10:14.000Z | Open filing evidence |
| 2015-04-01 – 2015-06-30 | 44500000 Restated | USD | 20160808 | Open filing evidence |
| 2015-01-01 – 2015-06-30 | 92500000 Restated | USD | 20160808 | Open filing evidence |
| 2015-01-01 – 2015-03-31 | 48000000 Restated | USD | 20160504 | Open filing evidence |
| 2014-07-01 – 2014-09-30 | 61900000 | USD | 20151104 | Open filing evidence |
| 2014-01-01 – 2014-09-30 | 175300000 | USD | 20151104 | Open filing evidence |
| 2014-04-01 – 2014-06-30 | 58700000 | USD | 20150805 | Open filing evidence |
| 2014-01-01 – 2014-06-30 | 113400000 | USD | 20150805 | Open filing evidence |
| 2014-01-01 – 2014-03-31 | 54700000 | USD | 20150506 | Open filing evidence |
| 2013-07-01 – 2013-09-30 | 56700000 | USD | 20141105 | Open filing evidence |
| 2013-01-01 – 2013-09-30 | 171500000 | USD | 20141105 | Open filing evidence |
| 2013-04-01 – 2013-06-30 | 56700000 | USD | 20140805 | Open filing evidence |
| 2013-01-01 – 2013-06-30 | 114800000 | USD | 20140805 | Open filing evidence |
| 2013-01-01 – 2013-03-31 | 58100000 | USD | 20140501 | Open filing evidence |
Operating Segments · All Other Segments
Consolidation Items · Statement Business Segments
Source dimensions
us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=us-gaap:AllOtherSegmentsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-04-01 – 2018-06-30 | 600000 | USD | 2018-08-07 · 19:32:54.000Z | Open filing evidence |
| 2018-01-01 – 2018-06-30 | 1200000 | USD | 2018-08-07 · 19:32:54.000Z | Open filing evidence |
| 2018-01-01 – 2018-03-31 | 600000 | USD | 2018-05-09 · 20:00:57.000Z | Open filing evidence |
| 2017-01-01 – 2017-12-31 | 2300000 | USD | 2018-02-28 · 20:42:47.000Z | Open filing evidence |
| 2017-07-01 – 2017-09-30 | 500000 | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2017-01-01 – 2017-09-30 | 1700000 | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2017-04-01 – 2017-06-30 | 700000 | USD | 2018-08-07 · 19:32:54.000Z | Open filing evidence |
| 2017-01-01 – 2017-06-30 | 1200000 | USD | 2018-08-07 · 19:32:54.000Z | Open filing evidence |
| 2017-01-01 – 2017-03-31 | 500000 | USD | 2018-05-09 · 20:00:57.000Z | Open filing evidence |
| 2016-01-01 – 2016-12-31 | 2300000 | USD | 2018-02-28 · 20:42:47.000Z | Open filing evidence |
| 2016-07-01 – 2016-09-30 | 600000 | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2016-01-01 – 2016-09-30 | 1700000 | USD | 2017-11-06 · 19:55:27.000Z | Open filing evidence |
| 2016-04-01 – 2016-06-30 | 500000 | USD | 2017-08-08 · 18:11:00.000Z | Open filing evidence |
| 2016-01-01 – 2016-06-30 | 1100000 | USD | 2017-08-08 · 18:11:00.000Z | Open filing evidence |
| 2016-01-01 – 2016-03-31 | 600000 | USD | 2017-05-03 · 18:57:12.000Z | Open filing evidence |
| 2015-01-01 – 2015-12-31 | 1700000 | USD | 2018-02-28 · 20:42:47.000Z | Open filing evidence |
| 2015-07-01 – 2015-09-30 | 500000 | USD | 2016-11-07 · 21:10:14.000Z | Open filing evidence |
| 2015-01-01 – 2015-09-30 | 1200000 | USD | 2016-11-07 · 21:10:14.000Z | Open filing evidence |
| 2015-04-01 – 2015-06-30 | 700000 | USD | 20160808 | Open filing evidence |
| 2015-01-01 – 2015-06-30 | 700000 | USD | 20160808 | Open filing evidence |
| 2014-01-01 – 2014-12-31 | 3200000 | USD | 2017-03-01 · 18:51:18.000Z | Open filing evidence |
| 2013-07-01 – 2013-09-30 | 400000 | USD | 20131106 | Open filing evidence |
| 2013-01-01 – 2013-09-30 | 1400000 | USD | 20131106 | Open filing evidence |
| 2013-04-01 – 2013-06-30 | 600000 | USD | 20130806 | Open filing evidence |
| 2013-01-01 – 2013-06-30 | 1000000 | USD | 20130806 | Open filing evidence |
| 2012-07-01 – 2012-09-30 | 800000 | USD | 20131106 | Open filing evidence |
| 2012-01-01 – 2012-09-30 | 2700000 | USD | 20131106 | Open filing evidence |
| 2012-04-01 – 2012-06-30 | 1100000 | USD | 20130806 | Open filing evidence |
| 2012-01-01 – 2012-06-30 | 1900000 | USD | 20130806 | Open filing evidence |
Operating Segments · Operating Segments
Consolidation Items · Statement Business Segments
Source dimensions
us-gaap:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=us-gaap:OperatingSegmentsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2015-01-01 – 2015-12-31 | 1366900000 | USD | 20160302 | Open filing evidence |
| 2014-01-01 – 2014-12-31 | 1169500000 | USD | 20160302 | Open filing evidence |
| 2013-01-01 – 2013-12-31 | 1151000000 | USD | 20160302 | Open filing evidence |
| 2012-01-01 – 2012-12-31 | 1146300000 | USD | 20150303 | Open filing evidence |
| 2011-01-01 – 2011-12-31 | 1552300000 | USD | 20140306 | Open filing evidence |
Business Insurance Segments · Operating Segments
Statement Business Segments · Consolidation Items
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=stfc:BusinessInsuranceSegmentsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2021-07-01 – 2021-09-30 | 164400000 | USD | 20211104 | Open filing evidence |
| 2021-01-01 – 2021-09-30 | 470700000 | USD | 20211104 | Open filing evidence |
| 2021-04-01 – 2021-06-30 | 157600000 | USD | 20210806 | Open filing evidence |
| 2021-01-01 – 2021-06-30 | 306300000 | USD | 20210806 | Open filing evidence |
| 2020-07-01 – 2020-09-30 | 144400000 | USD | 20211104 | Open filing evidence |
| 2020-01-01 – 2020-09-30 | 414700000 | USD | 20211104 | Open filing evidence |
| 2020-04-01 – 2020-06-30 | 137900000 | USD | 20210806 | Open filing evidence |
| 2020-01-01 – 2020-06-30 | 270300000 | USD | 20210806 | Open filing evidence |
| 2019-07-01 – 2019-09-30 | 127000000 | USD | 20201106 | Open filing evidence |
| 2019-01-01 – 2019-09-30 | 361400000 | USD | 20201106 | Open filing evidence |
Insurance Segments · Operating Segments
Statement Business Segments · Consolidation Items
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=stfc:InsuranceSegmentsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2021-07-01 – 2021-09-30 | 381800000 | USD | 20211104 | Open filing evidence |
| 2021-01-01 – 2021-09-30 | 1107600000 | USD | 20211104 | Open filing evidence |
| 2020-07-01 – 2020-09-30 | 353200000 | USD | 20211104 | Open filing evidence |
| 2020-01-01 – 2020-09-30 | 1024400000 | USD | 20211104 | Open filing evidence |
Investment Operations Segment · Operating Segments
Statement Business Segments · Consolidation Items
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=stfc:InvestmentOperationsSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2021-07-01 – 2021-09-30 | 8900000 | USD | 20211104 | Open filing evidence |
| 2021-01-01 – 2021-09-30 | 109100000 | USD | 20211104 | Open filing evidence |
| 2020-07-01 – 2020-09-30 | 37900000 | USD | 20211104 | Open filing evidence |
| 2020-01-01 – 2020-09-30 | 15200000 | USD | 20211104 | Open filing evidence |
| 2019-07-01 – 2019-09-30 | 14300000 | USD | 20201106 | Open filing evidence |
| 2019-01-01 – 2019-09-30 | 110600000 | USD | 20201106 | Open filing evidence |
Personal Insurance Segments · Operating Segments
Statement Business Segments · Consolidation Items
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=stfc:PersonalInsuranceSegmentsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2021-04-01 – 2021-06-30 | 213100000 | USD | 20210806 | Open filing evidence |
| 2021-01-01 – 2021-06-30 | 420900000 | USD | 20210806 | Open filing evidence |
| 2020-07-01 – 2020-09-30 | 208800000 | USD | 20201106 | Open filing evidence |
| 2020-01-01 – 2020-09-30 | 609700000 | USD | 20201106 | Open filing evidence |
| 2020-04-01 – 2020-06-30 | 202800000 | USD | 20210806 | Open filing evidence |
| 2020-01-01 – 2020-06-30 | 400900000 | USD | 20210806 | Open filing evidence |
| 2019-07-01 – 2019-09-30 | 192700000 | USD | 20201106 | Open filing evidence |
| 2019-01-01 – 2019-09-30 | 562500000 | USD | 20201106 | Open filing evidence |
Specialty Insurance Segment · Operating Segments
Statement Business Segments · Consolidation Items
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=stfc:SpecialtyInsuranceSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2021-04-01 – 2021-06-30 | -800000 | USD | 20210806 | Open filing evidence |
| 2021-01-01 – 2021-06-30 | -1400000 | USD | 20210806 | Open filing evidence |
| 2020-04-01 – 2020-06-30 | 0 | USD | 20210806 | Open filing evidence |
| 2020-01-01 – 2020-06-30 | 0 | USD | 20210806 | Open filing evidence |
Totalinternalandexternalrevenue
Statement Business Segments
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=stfc:TotalinternalandexternalrevenueMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2020-01-01 – 2020-12-31 | 1488600000 | USD | 20210310 | Open filing evidence |
| 2019-01-01 – 2019-12-31 | 1413700000 Restated | USD | 20210310 | Open filing evidence |
| 2018-01-01 – 2018-12-31 | 1281900000 Restated | USD | 20210310 | Open filing evidence |
| 2017-01-01 – 2017-12-31 | 1428300000 Restated | USD | 20200227 | Open filing evidence |
| 2016-01-01 – 2016-12-31 | 1410400000 Restated | USD | 20190315 | Open filing evidence |
| 2015-01-01 – 2015-12-31 | 1374200000 | USD | 2018-02-28 · 20:42:47.000Z | Open filing evidence |
| 2014-01-01 – 2014-12-31 | 1177800000 | USD | 2017-03-01 · 18:51:18.000Z | Open filing evidence |
All Other Segments
Statement Business Segments
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=us-gaap:AllOtherSegmentsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2013-01-01 – 2013-03-31 | 400000 | USD | 20130509 | Open filing evidence |
| 2012-01-01 – 2012-12-31 | 3800000 | USD | 20130308 | Open filing evidence |
| 2012-07-01 – 2012-09-30 | 800000 | USD | 20121107 | Open filing evidence |
| 2012-01-01 – 2012-09-30 | 2700000 | USD | 20121107 | Open filing evidence |
| 2012-04-01 – 2012-06-30 | 1100000 | USD | 20120808 | Open filing evidence |
| 2012-01-01 – 2012-06-30 | 1900000 | USD | 20120808 | Open filing evidence |
| 2012-01-01 – 2012-03-31 | 800000 | USD | 20130509 | Open filing evidence |
| 2011-01-01 – 2011-12-31 | 1400000 | USD | 20130308 | Open filing evidence |
| 2011-07-01 – 2011-09-30 | 700000 | USD | 20121107 | Open filing evidence |
| 2011-01-01 – 2011-09-30 | 900000 | USD | 20121107 | Open filing evidence |
| 2011-04-01 – 2011-06-30 | -600000 | USD | 20120808 | Open filing evidence |
| 2011-01-01 – 2011-06-30 | 200000 | USD | 20120808 | Open filing evidence |
| 2010-01-01 – 2010-12-31 | 6100000 | USD | 20130308 | Open filing evidence |
All Other Segments · Operating Segments
Statement Business Segments · Consolidation Items
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=us-gaap:AllOtherSegmentsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2020-01-01 – 2020-12-31 | 2100000 | USD | 20210310 | Open filing evidence |
| 2020-07-01 – 2020-09-30 | 500000 | USD | 20211104 | Open filing evidence |
| 2020-01-01 – 2020-09-30 | 1600000 | USD | 20211104 | Open filing evidence |
| 2020-04-01 – 2020-06-30 | 500000 | USD | 20210806 | Open filing evidence |
| 2020-01-01 – 2020-06-30 | 1100000 | USD | 20210806 | Open filing evidence |
| 2019-01-01 – 2019-12-31 | 2400000 | USD | 20210310 | Open filing evidence |
| 2019-04-01 – 2019-06-30 | 400000 | USD | 20200807 | Open filing evidence |
| 2019-01-01 – 2019-06-30 | 1000000 | USD | 20200807 | Open filing evidence |
| 2018-01-01 – 2018-12-31 | 2600000 | USD | 20210310 | Open filing evidence |
Intersegment Elimination
Statement Business Segments
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=us-gaap:IntersegmentEliminationMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2015-01-01 – 2015-12-31 | -5600000 | USD | 20160302 | Open filing evidence |
| 2014-01-01 – 2014-12-31 | -5100000 | USD | 20160302 | Open filing evidence |
| 2013-01-01 – 2013-12-31 | -5100000 | USD | 20160302 | Open filing evidence |
| 2013-01-01 – 2013-03-31 | 1300000 | USD | 20130509 | Open filing evidence |
| 2012-01-01 – 2012-12-31 | -9500000 | USD | 20150303 | Open filing evidence |
| 2012-07-01 – 2012-09-30 | -5600000 | USD | 20121107 | Open filing evidence |
| 2012-01-01 – 2012-09-30 | -10300000 | USD | 20121107 | Open filing evidence |
| 2012-04-01 – 2012-06-30 | -2300000 | USD | 20120808 | Open filing evidence |
| 2012-01-01 – 2012-06-30 | -4800000 | USD | 20120808 | Open filing evidence |
| 2012-01-01 – 2012-03-31 | 2500000 | USD | 20130509 | Open filing evidence |
| 2011-01-01 – 2011-12-31 | -10500000 | USD | 20140306 | Open filing evidence |
| 2011-07-01 – 2011-09-30 | -2600000 | USD | 20121107 | Open filing evidence |
| 2011-01-01 – 2011-09-30 | -7800000 | USD | 20121107 | Open filing evidence |
| 2011-04-01 – 2011-06-30 | -2600000 | USD | 20120808 | Open filing evidence |
| 2011-01-01 – 2011-06-30 | -5200000 | USD | 20120808 | Open filing evidence |
| 2010-01-01 – 2010-12-31 | -9800000 | USD | 20130308 | Open filing evidence |
Reportable Segments
Statement Business Segments
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=us-gaap:ReportableSegmentsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2012-01-01 – 2012-12-31 | 1146300000 | USD | 20130308 | Open filing evidence |
| 2011-01-01 – 2011-12-31 | 1552300000 | USD | 20130308 | Open filing evidence |
| 2010-01-01 – 2010-12-31 | 1349000000 | USD | 20130308 | Open filing evidence |