Fundies. English
Segment disclosures
Company overviewTETRA TECH, INC.
Each reported dimension combination stays separate. Revenue and operating income are shown as reported, with their dates and sources.
Revenue · Reported segment facts
18 dimension combinations 243 retained observations 38 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 Excluding Intersegment Elimination · Commercial International Services Group
Consolidation Items · Statement Business Segments
Source dimensions
srt:ConsolidationItemsAxis=ttek:OperatingSegmentsExcludingIntersegmentEliminationMember;us-gaap:StatementBusinessSegmentsAxis=ttek:CommercialInternationalServicesGroupMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2026-03-30 – 2026-06-28 | 717988000 | USD | 2026-07-31 · 20:34:05.000Z | Open filing evidence |
| 2025-09-29 – 2026-06-28 | 2083966000 | USD | 2026-07-31 · 20:34:05.000Z | Open filing evidence |
| 2025-12-29 – 2026-03-29 | 668793000 | USD | 2026-05-01 · 20:33:49.000Z | Open filing evidence |
| 2025-09-29 – 2026-03-29 | 1365978000 | USD | 2026-05-01 · 20:33:49.000Z | Open filing evidence |
| 2025-09-29 – 2025-12-28 | 697185000 | USD | 2026-01-30 · 21:02:20.000Z | Open filing evidence |
| 2024-09-30 – 2025-09-28 | 2805164000 | USD | 2025-11-20 · 21:11:42.000Z | Open filing evidence |
| 2025-03-31 – 2025-06-29 | 666708000 | USD | 2026-07-31 · 20:34:05.000Z | Open filing evidence |
| 2024-09-30 – 2025-06-29 | 1931756000 | USD | 2026-07-31 · 20:34:05.000Z | Open filing evidence |
| 2024-12-30 – 2025-03-30 | 628468000 | USD | 2026-05-01 · 20:33:49.000Z | Open filing evidence |
| 2024-09-30 – 2025-03-30 | 1265048000 | USD | 2026-05-01 · 20:33:49.000Z | Open filing evidence |
| 2024-09-30 – 2024-12-29 | 636580000 | USD | 2026-01-30 · 21:02:20.000Z | Open filing evidence |
| 2023-10-02 – 2024-09-29 | 2752933000 | USD | 2025-11-20 · 21:11:42.000Z | Open filing evidence |
| 2022-10-03 – 2023-10-01 | 2394220000 | USD | 2025-11-20 · 21:11:42.000Z | Open filing evidence |
Operating Segments Excluding Intersegment Elimination · Government Services Group
Consolidation Items · Statement Business Segments
Source dimensions
srt:ConsolidationItemsAxis=ttek:OperatingSegmentsExcludingIntersegmentEliminationMember;us-gaap:StatementBusinessSegmentsAxis=ttek:GovernmentServicesGroupMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2026-03-30 – 2026-06-28 | 590567000 | USD | 2026-07-31 · 20:34:05.000Z | Open filing evidence |
| 2025-09-29 – 2026-06-28 | 1655408000 | USD | 2026-07-31 · 20:34:05.000Z | Open filing evidence |
| 2025-12-29 – 2026-03-29 | 551364000 | USD | 2026-05-01 · 20:33:49.000Z | Open filing evidence |
| 2025-09-29 – 2026-03-29 | 1064842000 | USD | 2026-05-01 · 20:33:49.000Z | Open filing evidence |
| 2025-09-29 – 2025-12-28 | 513478000 | USD | 2026-01-30 · 21:02:20.000Z | Open filing evidence |
| 2024-09-30 – 2025-09-28 | 2637426000 | USD | 2025-11-20 · 21:11:42.000Z | Open filing evidence |
| 2025-03-31 – 2025-06-29 | 703108000 | USD | 2026-07-31 · 20:34:05.000Z | Open filing evidence |
| 2024-09-30 – 2025-06-29 | 2180734000 | USD | 2026-07-31 · 20:34:05.000Z | Open filing evidence |
| 2024-12-30 – 2025-03-30 | 693645000 | USD | 2026-05-01 · 20:33:49.000Z | Open filing evidence |
| 2024-09-30 – 2025-03-30 | 1477626000 | USD | 2026-05-01 · 20:33:49.000Z | Open filing evidence |
| 2024-09-30 – 2024-12-29 | 783981000 | USD | 2026-01-30 · 21:02:20.000Z | Open filing evidence |
| 2023-10-02 – 2024-09-29 | 2445746000 | USD | 2025-11-20 · 21:11:42.000Z | Open filing evidence |
| 2022-10-03 – 2023-10-01 | 2128330000 | USD | 2025-11-20 · 21:11:42.000Z | Open filing evidence |
Intersegment Elimination · Commercial International Services Group
Consolidation Items · Statement Business Segments
Source dimensions
srt:ConsolidationItemsAxis=us-gaap:IntersegmentEliminationMember;us-gaap:StatementBusinessSegmentsAxis=ttek:CommercialInternationalServicesGroupMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2026-03-30 – 2026-06-28 | -10288000 | USD | 2026-07-31 · 20:34:05.000Z | Open filing evidence |
| 2025-09-29 – 2026-06-28 | -24610000 | USD | 2026-07-31 · 20:34:05.000Z | Open filing evidence |
| 2025-12-29 – 2026-03-29 | -7330000 | USD | 2026-05-01 · 20:33:49.000Z | Open filing evidence |
| 2025-09-29 – 2026-03-29 | -14322000 | USD | 2026-05-01 · 20:33:49.000Z | Open filing evidence |
| 2025-09-29 – 2025-12-28 | -6993000 | USD | 2026-01-30 · 21:02:20.000Z | Open filing evidence |
| 2024-09-30 – 2025-09-28 | -39483000 | USD | 2025-11-20 · 21:11:42.000Z | Open filing evidence |
| 2025-03-31 – 2025-06-29 | -9780000 | USD | 2026-07-31 · 20:34:05.000Z | Open filing evidence |
| 2024-09-30 – 2025-06-29 | -27320000 | USD | 2026-07-31 · 20:34:05.000Z | Open filing evidence |
| 2024-12-30 – 2025-03-30 | -9218000 | USD | 2026-05-01 · 20:33:49.000Z | Open filing evidence |
| 2024-09-30 – 2025-03-30 | -17540000 | USD | 2026-05-01 · 20:33:49.000Z | Open filing evidence |
| 2024-09-30 – 2024-12-29 | -8322000 | USD | 2026-01-30 · 21:02:20.000Z | Open filing evidence |
| 2023-10-02 – 2024-09-29 | -33798000 | USD | 2025-11-20 · 21:11:42.000Z | Open filing evidence |
| 2022-10-03 – 2023-10-01 | -30429000 | USD | 2025-11-20 · 21:11:42.000Z | Open filing evidence |
Intersegment Elimination · Government Services Group
Consolidation Items · Statement Business Segments
Source dimensions
srt:ConsolidationItemsAxis=us-gaap:IntersegmentEliminationMember;us-gaap:StatementBusinessSegmentsAxis=ttek:GovernmentServicesGroupMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2026-03-30 – 2026-06-28 | -7835000 | USD | 2026-07-31 · 20:34:05.000Z | Open filing evidence |
| 2025-09-29 – 2026-06-28 | -27852000 | USD | 2026-07-31 · 20:34:05.000Z | Open filing evidence |
| 2025-12-29 – 2026-03-29 | -7987000 | USD | 2026-05-01 · 20:33:49.000Z | Open filing evidence |
| 2025-09-29 – 2026-03-29 | -20017000 | USD | 2026-05-01 · 20:33:49.000Z | Open filing evidence |
| 2025-09-29 – 2025-12-28 | -12030000 | USD | 2026-01-30 · 21:02:20.000Z | Open filing evidence |
| 2024-09-30 – 2025-09-28 | -36483000 | USD | 2025-11-20 · 21:11:42.000Z | Open filing evidence |
| 2025-03-31 – 2025-06-29 | -6303000 | USD | 2026-07-31 · 20:34:05.000Z | Open filing evidence |
| 2024-09-30 – 2025-06-29 | -18902000 | USD | 2026-07-31 · 20:34:05.000Z | Open filing evidence |
| 2024-12-30 – 2025-03-30 | -5228000 | USD | 2026-05-01 · 20:33:49.000Z | Open filing evidence |
| 2024-09-30 – 2025-03-30 | -12599000 | USD | 2026-05-01 · 20:33:49.000Z | Open filing evidence |
| 2024-09-30 – 2024-12-29 | -7371000 | USD | 2026-01-30 · 21:02:20.000Z | Open filing evidence |
| 2023-10-02 – 2024-09-29 | -37609000 | USD | 2025-11-20 · 21:11:42.000Z | Open filing evidence |
| 2022-10-03 – 2023-10-01 | -30559000 | USD | 2025-11-20 · 21:11:42.000Z | Open filing evidence |
Operating Segments · Commercial International Services Group
Consolidation Items · Statement Business Segments
Source dimensions
srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=ttek:CommercialInternationalServicesGroupMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2026-03-30 – 2026-06-28 | 728276000 | USD | 2026-07-31 · 20:34:05.000Z | Open filing evidence |
| 2025-09-29 – 2026-06-28 | 2108576000 | USD | 2026-07-31 · 20:34:05.000Z | Open filing evidence |
| 2025-12-29 – 2026-03-29 | 676123000 | USD | 2026-05-01 · 20:33:49.000Z | Open filing evidence |
| 2025-09-29 – 2026-03-29 | 1380300000 | USD | 2026-05-01 · 20:33:49.000Z | Open filing evidence |
| 2025-09-29 – 2025-12-28 | 704178000 | USD | 2026-01-30 · 21:02:20.000Z | Open filing evidence |
| 2024-09-30 – 2025-09-28 | 2844647000 | USD | 2025-11-20 · 21:11:42.000Z | Open filing evidence |
| 2025-03-31 – 2025-06-29 | 676488000 Restated | USD | 2026-07-31 · 20:34:05.000Z | Open filing evidence |
| 2024-09-30 – 2025-06-29 | 1959076000 Restated | USD | 2026-07-31 · 20:34:05.000Z | Open filing evidence |
| 2024-12-30 – 2025-03-30 | 637686000 Restated | USD | 2026-05-01 · 20:33:49.000Z | Open filing evidence |
| 2024-09-30 – 2025-03-30 | 1282588000 Restated | USD | 2026-05-01 · 20:33:49.000Z | Open filing evidence |
| 2024-09-30 – 2024-12-29 | 644902000 Restated | USD | 2026-01-30 · 21:02:20.000Z | Open filing evidence |
| 2023-10-02 – 2024-09-29 | 2786731000 | USD | 2025-11-20 · 21:11:42.000Z | Open filing evidence |
| 2024-04-01 – 2024-06-30 | 723617000 | USD | 2025-08-01 · 20:05:02.000Z | Open filing evidence |
| 2023-10-02 – 2024-06-30 | 2063879000 | USD | 2025-08-01 · 20:05:02.000Z | Open filing evidence |
| 2024-01-01 – 2024-03-31 | 671155000 | USD | 2025-05-08 · 20:36:09.000Z | Open filing evidence |
| 2023-10-02 – 2024-03-31 | 1340262000 | USD | 2025-05-08 · 20:36:09.000Z | Open filing evidence |
| 2023-10-02 – 2023-12-31 | 669107000 | USD | 2025-01-31 · 21:06:48.000Z | Open filing evidence |
| 2022-10-03 – 2023-10-01 | 2424649000 | USD | 2025-11-20 · 21:11:42.000Z | Open filing evidence |
| 2023-04-03 – 2023-07-02 | 691386000 | USD | 2023-08-10 · 20:09:55.000Z | Open filing evidence |
| 2022-10-03 – 2023-07-02 | 1741300000 | USD | 2023-08-10 · 20:09:55.000Z | Open filing evidence |
| 2023-01-02 – 2023-04-02 | 610358000 | USD | 2024-05-03 · 20:07:14.000Z | Open filing evidence |
| 2022-10-03 – 2023-04-02 | 1049914000 | USD | 2024-05-03 · 20:07:14.000Z | Open filing evidence |
| 2022-10-03 – 2023-01-01 | 439556000 | USD | 2023-02-03 · 21:13:42.000Z | Open filing evidence |
| 2021-10-04 – 2022-10-02 | 1738436000 | USD | 2024-11-19 · 21:11:47.000Z | Open filing evidence |
| 2022-04-04 – 2022-07-03 | 444238000 | USD | 2023-08-10 · 20:09:55.000Z | Open filing evidence |
| 2021-10-04 – 2022-07-03 | 1277469000 | USD | 2023-08-10 · 20:09:55.000Z | Open filing evidence |
| 2022-01-03 – 2022-04-03 | 416945000 | USD | 2023-05-11 · 20:10:05.000Z | Open filing evidence |
| 2021-10-04 – 2022-04-03 | 833231000 | USD | 2023-05-11 · 20:10:05.000Z | Open filing evidence |
| 2021-10-04 – 2022-01-02 | 416286000 | USD | 2023-02-03 · 21:13:42.000Z | Open filing evidence |
| 2020-09-28 – 2021-10-03 | 1500074000 Restated | USD | 2023-11-22 · 21:16:33.000Z | Open filing evidence |
| 2021-03-29 – 2021-06-27 | 372722000 Restated | USD | 2022-08-05 · 20:10:07.000Z | Open filing evidence |
| 2020-09-28 – 2021-06-27 | 1064680000 Restated | USD | 2022-08-05 · 20:10:07.000Z | Open filing evidence |
| 2020-09-28 – 2020-12-27 | 356526000 Restated | USD | 2022-02-04 · 21:09:03.000Z | Open filing evidence |
| 2019-09-30 – 2020-09-27 | 1471097000 Restated | USD | 2022-11-24 · 00:15:43.000Z | Open filing evidence |
| 2020-03-30 – 2020-06-28 | 291021000 | USD | 2021-07-30 · 20:20:02.000Z | Open filing evidence |
| 2019-09-30 – 2020-06-28 | 950597000 | USD | 2021-07-30 · 20:20:02.000Z | Open filing evidence |
| 2019-12-30 – 2020-03-29 | 308412000 | USD | 2020-05-01 · 19:50:35.000Z | Open filing evidence |
| 2019-09-30 – 2020-03-29 | 659576000 | USD | 2020-05-01 · 19:50:35.000Z | Open filing evidence |
| 2019-09-30 – 2019-12-29 | 351164000 | USD | 2021-01-29 · 21:11:20.000Z | Open filing evidence |
| 2018-10-01 – 2019-09-29 | 1342509000 | USD | 2021-11-24 · 21:09:30.000Z | Open filing evidence |
| 2019-04-01 – 2019-06-30 | 347757000 | USD | 2019-08-02 · 20:09:11.000Z | Open filing evidence |
| 2018-10-01 – 2019-06-30 | 988009000 | USD | 2019-08-02 · 20:09:11.000Z | Open filing evidence |
| 2018-12-31 – 2019-03-31 | 322458000 | USD | 2020-05-01 · 19:50:35.000Z | Open filing evidence |
| 2018-10-01 – 2019-03-31 | 640252000 | USD | 2020-05-01 · 19:50:35.000Z | Open filing evidence |
| 2018-10-01 – 2018-12-30 | 317793000 | USD | 2020-01-31 · 20:18:30.000Z | Open filing evidence |
| 2017-10-02 – 2018-09-30 | 1323142000 | USD | 2020-11-23 · 17:21:32.000Z | Open filing evidence |
| 2018-04-02 – 2018-07-01 | 352631000 | USD | 2019-08-02 · 20:09:11.000Z | Open filing evidence |
| 2017-10-02 – 2018-07-01 | 993849000 | USD | 2019-08-02 · 20:09:11.000Z | Open filing evidence |
| 2018-01-01 – 2018-04-01 | 309704000 | USD | 2019-05-03 · 19:40:25.000Z | Open filing evidence |
| 2017-10-02 – 2018-04-01 | 641217000 | USD | 2019-05-03 · 19:40:25.000Z | Open filing evidence |
| 2017-10-02 – 2017-12-31 | 331513000 | USD | 2019-02-01 · 20:58:33.000Z | Open filing evidence |
| 2016-10-03 – 2017-10-01 | 1326020000 | USD | 2019-11-27 · 22:56:44.000Z | Open filing evidence |
| 2017-04-03 – 2017-07-02 | 318195000 | USD | 2018-08-03 · 20:02:58.000Z | Open filing evidence |
| 2016-10-03 – 2017-07-02 | 965393000 | USD | 2018-08-03 · 20:02:58.000Z | Open filing evidence |
| 2015-09-28 – 2016-10-02 | 1297209000 | USD | 2018-11-16 · 20:30:07.000Z | Open filing evidence |
Operating Segments · Government Services Group
Consolidation Items · Statement Business Segments
Source dimensions
srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=ttek:GovernmentServicesGroupMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2026-03-30 – 2026-06-28 | 598402000 | USD | 2026-07-31 · 20:34:05.000Z | Open filing evidence |
| 2025-09-29 – 2026-06-28 | 1683260000 | USD | 2026-07-31 · 20:34:05.000Z | Open filing evidence |
| 2025-12-29 – 2026-03-29 | 559351000 | USD | 2026-05-01 · 20:33:49.000Z | Open filing evidence |
| 2025-09-29 – 2026-03-29 | 1084859000 | USD | 2026-05-01 · 20:33:49.000Z | Open filing evidence |
| 2025-09-29 – 2025-12-28 | 525508000 | USD | 2026-01-30 · 21:02:20.000Z | Open filing evidence |
| 2024-09-30 – 2025-09-28 | 2673909000 | USD | 2025-11-20 · 21:11:42.000Z | Open filing evidence |
| 2025-03-31 – 2025-06-29 | 709411000 Restated | USD | 2026-07-31 · 20:34:05.000Z | Open filing evidence |
| 2024-09-30 – 2025-06-29 | 2199636000 Restated | USD | 2026-07-31 · 20:34:05.000Z | Open filing evidence |
| 2024-12-30 – 2025-03-30 | 698873000 Restated | USD | 2026-05-01 · 20:33:49.000Z | Open filing evidence |
| 2024-09-30 – 2025-03-30 | 1490225000 Restated | USD | 2026-05-01 · 20:33:49.000Z | Open filing evidence |
| 2024-09-30 – 2024-12-29 | 791352000 Restated | USD | 2026-01-30 · 21:02:20.000Z | Open filing evidence |
| 2023-10-02 – 2024-09-29 | 2483355000 | USD | 2025-11-20 · 21:11:42.000Z | Open filing evidence |
| 2024-04-01 – 2024-06-30 | 640553000 | USD | 2025-08-01 · 20:05:02.000Z | Open filing evidence |
| 2023-10-02 – 2024-06-30 | 1812721000 | USD | 2025-08-01 · 20:05:02.000Z | Open filing evidence |
| 2024-01-01 – 2024-03-31 | 597127000 | USD | 2025-05-08 · 20:36:09.000Z | Open filing evidence |
| 2023-10-02 – 2024-03-31 | 1172168000 | USD | 2025-05-08 · 20:36:09.000Z | Open filing evidence |
| 2023-10-02 – 2023-12-31 | 575041000 | USD | 2025-01-31 · 21:06:48.000Z | Open filing evidence |
| 2022-10-03 – 2023-10-01 | 2158889000 | USD | 2025-11-20 · 21:11:42.000Z | Open filing evidence |
| 2023-04-03 – 2023-07-02 | 531050000 | USD | 2024-08-02 · 20:02:59.000Z | Open filing evidence |
| 2022-10-03 – 2023-07-02 | 1565371000 | USD | 2024-08-02 · 20:02:59.000Z | Open filing evidence |
| 2023-01-02 – 2023-04-02 | 563254000 | USD | 2023-05-11 · 20:10:05.000Z | Open filing evidence |
| 2022-10-03 – 2023-04-02 | 1034322000 | USD | 2023-05-11 · 20:10:05.000Z | Open filing evidence |
| 2022-10-03 – 2023-01-01 | 471067000 | USD | 2024-02-02 · 21:07:32.000Z | Open filing evidence |
| 2021-10-04 – 2022-10-02 | 1820868000 | USD | 2024-11-19 · 21:11:47.000Z | Open filing evidence |
| 2022-04-04 – 2022-07-03 | 459987000 | USD | 2023-08-10 · 20:09:55.000Z | Open filing evidence |
| 2021-10-04 – 2022-07-03 | 1365041000 | USD | 2023-08-10 · 20:09:55.000Z | Open filing evidence |
| 2022-01-03 – 2022-04-03 | 448956000 | USD | 2023-05-11 · 20:10:05.000Z | Open filing evidence |
| 2021-10-04 – 2022-04-03 | 905054000 | USD | 2023-05-11 · 20:10:05.000Z | Open filing evidence |
| 2021-10-04 – 2022-01-02 | 456099000 | USD | 2023-02-03 · 21:13:42.000Z | Open filing evidence |
| 2020-09-28 – 2021-10-03 | 1772905000 | USD | 2023-11-22 · 21:16:33.000Z | Open filing evidence |
| 2021-03-29 – 2021-06-27 | 444263000 | USD | 2022-08-05 · 20:10:07.000Z | Open filing evidence |
| 2020-09-28 – 2021-06-27 | 1301497000 | USD | 2022-08-05 · 20:10:07.000Z | Open filing evidence |
| 2020-09-28 – 2020-12-27 | 424663000 Restated | USD | 2022-02-04 · 21:09:03.000Z | Open filing evidence |
| 2019-09-30 – 2020-09-27 | 1578332000 Restated | USD | 2022-11-24 · 00:15:43.000Z | Open filing evidence |
| 2019-09-30 – 2019-12-29 | 457404000 | USD | 2021-01-29 · 21:11:20.000Z | Open filing evidence |
| 2018-10-01 – 2019-09-29 | 1820671000 | USD | 2020-11-23 · 17:21:32.000Z | Open filing evidence |
| 2019-04-01 – 2019-06-30 | 491989000 | USD | 2019-08-02 · 20:09:11.000Z | Open filing evidence |
| 2018-10-01 – 2019-06-30 | 1321486000 | USD | 2019-08-02 · 20:09:11.000Z | Open filing evidence |
| 2018-12-31 – 2019-03-31 | 417526000 | USD | 2019-05-03 · 19:40:25.000Z | Open filing evidence |
| 2018-10-01 – 2019-03-31 | 829497000 | USD | 2019-05-03 · 19:40:25.000Z | Open filing evidence |
| 2018-10-01 – 2018-12-30 | 411971000 | USD | 2020-01-31 · 20:18:30.000Z | Open filing evidence |
| 2017-10-02 – 2018-09-30 | 1694871000 | USD | 2020-11-23 · 17:21:32.000Z | Open filing evidence |
| 2018-04-02 – 2018-07-01 | 423912000 | USD | 2019-08-02 · 20:09:11.000Z | Open filing evidence |
| 2017-10-02 – 2018-07-01 | 1272712000 | USD | 2019-08-02 · 20:09:11.000Z | Open filing evidence |
| 2018-01-01 – 2018-04-01 | 406027000 | USD | 2019-05-03 · 19:40:25.000Z | Open filing evidence |
| 2017-10-02 – 2018-04-01 | 848799000 | USD | 2019-05-03 · 19:40:25.000Z | Open filing evidence |
| 2017-10-02 – 2017-12-31 | 442772000 | USD | 2019-02-01 · 20:58:33.000Z | Open filing evidence |
| 2016-10-03 – 2017-10-01 | 1487611000 | USD | 2019-11-27 · 22:56:44.000Z | Open filing evidence |
| 2017-04-03 – 2017-07-02 | 379292000 | USD | 2018-08-03 · 20:02:58.000Z | Open filing evidence |
| 2016-10-03 – 2017-07-02 | 1099265000 | USD | 2018-08-03 · 20:02:58.000Z | Open filing evidence |
| 2015-09-28 – 2016-10-02 | 1289506000 | USD | 2018-11-16 · 20:30:07.000Z | Open filing evidence |
Operating Segments · Remediation And Construction Management
Consolidation Items · Statement Business Segments
Source dimensions
srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=ttek:RemediationAndConstructionManagementMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2021-10-04 – 2022-10-02 | 0 | USD | 2022-11-24 · 00:15:43.000Z | Open filing evidence |
| 2022-04-04 – 2022-07-03 | 0 | USD | 2022-08-05 · 20:10:07.000Z | Open filing evidence |
| 2021-10-04 – 2022-07-03 | 0 | USD | 2022-08-05 · 20:10:07.000Z | Open filing evidence |
| 2022-01-03 – 2022-04-03 | 0 | USD | 2022-05-06 · 20:08:42.000Z | Open filing evidence |
| 2021-10-04 – 2022-04-03 | 0 | USD | 2022-05-06 · 20:08:42.000Z | Open filing evidence |
| 2020-09-28 – 2021-10-03 | 613000 | USD | 2022-11-24 · 00:15:43.000Z | Open filing evidence |
| 2021-03-29 – 2021-06-27 | 143000 | USD | 2022-08-05 · 20:10:07.000Z | Open filing evidence |
| 2020-09-28 – 2021-06-27 | 613000 | USD | 2022-08-05 · 20:10:07.000Z | Open filing evidence |
| 2020-12-28 – 2021-03-28 | 470000 | USD | 2022-05-06 · 20:08:42.000Z | Open filing evidence |
| 2020-09-28 – 2021-03-28 | 470000 | USD | 2022-05-06 · 20:08:42.000Z | Open filing evidence |
| 2020-09-28 – 2020-12-27 | 0 | USD | 2021-01-29 · 21:11:20.000Z | Open filing evidence |
| 2019-09-30 – 2020-09-27 | 198000 | USD | 2022-11-24 · 00:15:43.000Z | Open filing evidence |
| 2020-03-30 – 2020-06-28 | 48000 | USD | 2021-07-30 · 20:20:02.000Z | Open filing evidence |
| 2019-09-30 – 2020-06-28 | 198000 | USD | 2021-07-30 · 20:20:02.000Z | Open filing evidence |
| 2019-12-30 – 2020-03-29 | 5000 | USD | 2020-05-01 · 19:50:35.000Z | Open filing evidence |
| 2019-09-30 – 2020-03-29 | 150000 | USD | 2020-05-01 · 19:50:35.000Z | Open filing evidence |
| 2019-09-30 – 2019-12-29 | 145000 | USD | 2021-01-29 · 21:11:20.000Z | Open filing evidence |
| 2018-10-01 – 2019-09-29 | -1542000 | USD | 2020-11-23 · 17:21:32.000Z | Open filing evidence |
| 2019-04-01 – 2019-06-30 | 329000 | USD | 2020-07-31 · 20:17:54.000Z | Open filing evidence |
| 2018-10-01 – 2019-06-30 | -2862000 | USD | 2020-07-31 · 20:17:54.000Z | Open filing evidence |
| 2018-12-31 – 2019-03-31 | -4645000 | USD | 2020-05-01 · 19:50:35.000Z | Open filing evidence |
| 2018-10-01 – 2019-03-31 | -3192000 | USD | 2020-05-01 · 19:50:35.000Z | Open filing evidence |
| 2018-10-01 – 2018-12-30 | 1453000 | USD | 2020-01-31 · 20:18:30.000Z | Open filing evidence |
| 2017-10-02 – 2018-09-30 | 14199000 | USD | 2020-11-23 · 17:21:32.000Z | Open filing evidence |
| 2018-04-02 – 2018-07-01 | 3336000 | USD | 2019-08-02 · 20:09:11.000Z | Open filing evidence |
| 2017-10-02 – 2018-07-01 | 11622000 | USD | 2019-08-02 · 20:09:11.000Z | Open filing evidence |
| 2018-01-01 – 2018-04-01 | 1480000 | USD | 2019-05-03 · 19:40:25.000Z | Open filing evidence |
| 2017-10-02 – 2018-04-01 | 8286000 | USD | 2019-05-03 · 19:40:25.000Z | Open filing evidence |
| 2017-10-02 – 2017-12-31 | 6807000 | USD | 2019-02-01 · 20:58:33.000Z | Open filing evidence |
| 2016-10-03 – 2017-10-01 | 18207000 | USD | 2019-11-27 · 22:56:44.000Z | Open filing evidence |
| 2017-04-03 – 2017-07-02 | 4192000 | USD | 2018-08-03 · 20:02:58.000Z | Open filing evidence |
| 2016-10-03 – 2017-07-02 | 12401000 | USD | 2018-08-03 · 20:02:58.000Z | Open filing evidence |
| 2015-09-28 – 2016-10-02 | 52150000 | USD | 2018-11-16 · 20:30:07.000Z | Open filing evidence |
Cost Plus · Commercial International Services Group
Contract With Customer Basis Of Pricing · Statement Business Segments
Source dimensions
us-gaap:ContractWithCustomerBasisOfPricingAxis=ttek:CostPlusMember;us-gaap:StatementBusinessSegmentsAxis=ttek:CommercialInternationalServicesGroupMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-10-01 – 2018-12-30 | 147556000 | USD | 2019-02-01 · 20:58:33.000Z | Open filing evidence |
Cost Plus · Government Services Group
Contract With Customer Basis Of Pricing · Statement Business Segments
Source dimensions
us-gaap:ContractWithCustomerBasisOfPricingAxis=ttek:CostPlusMember;us-gaap:StatementBusinessSegmentsAxis=ttek:GovernmentServicesGroupMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-10-01 – 2018-12-30 | 139961000 | USD | 2019-02-01 · 20:58:33.000Z | Open filing evidence |
Fixed Price Contract · Commercial International Services Group
Contract With Customer Basis Of Pricing · Statement Business Segments
Source dimensions
us-gaap:ContractWithCustomerBasisOfPricingAxis=us-gaap:FixedPriceContractMember;us-gaap:StatementBusinessSegmentsAxis=ttek:CommercialInternationalServicesGroupMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-10-01 – 2018-12-30 | 235420000 | USD | 2019-02-01 · 20:58:33.000Z | Open filing evidence |
Fixed Price Contract · Government Services Group
Contract With Customer Basis Of Pricing · Statement Business Segments
Source dimensions
us-gaap:ContractWithCustomerBasisOfPricingAxis=us-gaap:FixedPriceContractMember;us-gaap:StatementBusinessSegmentsAxis=ttek:GovernmentServicesGroupMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-10-01 – 2018-12-30 | 240933000 | USD | 2019-02-01 · 20:58:33.000Z | Open filing evidence |
Time And Materials Contract · Commercial International Services Group
Contract With Customer Basis Of Pricing · Statement Business Segments
Source dimensions
us-gaap:ContractWithCustomerBasisOfPricingAxis=us-gaap:TimeAndMaterialsContractMember;us-gaap:StatementBusinessSegmentsAxis=ttek:CommercialInternationalServicesGroupMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-10-01 – 2018-12-30 | 376773000 | USD | 2019-02-01 · 20:58:33.000Z | Open filing evidence |
Time And Materials Contract · Government Services Group
Contract With Customer Basis Of Pricing · Statement Business Segments
Source dimensions
us-gaap:ContractWithCustomerBasisOfPricingAxis=us-gaap:TimeAndMaterialsContractMember;us-gaap:StatementBusinessSegmentsAxis=ttek:GovernmentServicesGroupMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-10-01 – 2018-12-30 | 336537000 | USD | 2019-02-01 · 20:58:33.000Z | Open filing evidence |
Commercial International Services Group
Statement Business Segments
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=ttek:CommercialInternationalServicesGroupMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-10-01 – 2018-12-30 | 759749000 | USD | 2019-02-01 · 20:58:33.000Z | Open filing evidence |
Commercial International Services Group · Operating Segments
Statement Business Segments · Consolidation Items
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=ttek:CommercialInternationalServicesGroupMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2024-04-01 – 2024-06-30 | 723617000 | USD | 2024-08-02 · 20:02:59.000Z | Open filing evidence |
| 2023-10-02 – 2024-06-30 | 2063879000 | USD | 2024-08-02 · 20:02:59.000Z | Open filing evidence |
| 2023-10-02 – 2023-12-31 | 669107000 | USD | 2024-02-02 · 21:07:32.000Z | Open filing evidence |
| 2023-04-03 – 2023-07-02 | 691386000 | USD | 2024-08-02 · 20:02:59.000Z | Open filing evidence |
| 2022-10-03 – 2023-07-02 | 1741300000 | USD | 2024-08-02 · 20:02:59.000Z | Open filing evidence |
| 2022-10-03 – 2023-01-01 | 439556000 | USD | 2024-02-02 · 21:07:32.000Z | Open filing evidence |
| 2022-01-03 – 2022-04-03 | 416945000 | USD | 2022-05-06 · 20:08:42.000Z | Open filing evidence |
| 2021-10-04 – 2022-04-03 | 833231000 | USD | 2022-05-06 · 20:08:42.000Z | Open filing evidence |
| 2020-12-28 – 2021-03-28 | 335432000 Restated | USD | 2022-05-06 · 20:08:42.000Z | Open filing evidence |
| 2020-09-28 – 2021-03-28 | 691958000 Restated | USD | 2022-05-06 · 20:08:42.000Z | Open filing evidence |
| 2020-03-30 – 2020-06-28 | 291021000 | USD | 2020-07-31 · 20:17:54.000Z | Open filing evidence |
| 2019-09-30 – 2020-06-28 | 950597000 | USD | 2020-07-31 · 20:17:54.000Z | Open filing evidence |
| 2019-12-30 – 2020-03-29 | 308412000 | USD | 2021-04-30 · 20:12:57.000Z | Open filing evidence |
| 2019-09-30 – 2020-03-29 | 659576000 | USD | 2021-04-30 · 20:12:57.000Z | Open filing evidence |
| 2019-04-01 – 2019-06-30 | 347757000 | USD | 2020-07-31 · 20:17:54.000Z | Open filing evidence |
| 2018-10-01 – 2019-06-30 | 988009000 | USD | 2020-07-31 · 20:17:54.000Z | Open filing evidence |
Government Services Group
Statement Business Segments
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=ttek:GovernmentServicesGroupMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2018-10-01 – 2018-12-30 | 717431000 | USD | 2019-02-01 · 20:58:33.000Z | Open filing evidence |
Government Services Group · Operating Segments
Statement Business Segments · Consolidation Items
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=ttek:GovernmentServicesGroupMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2024-01-01 – 2024-03-31 | 597127000 | USD | 2024-05-03 · 20:07:14.000Z | Open filing evidence |
| 2023-10-02 – 2024-03-31 | 1172168000 | USD | 2024-05-03 · 20:07:14.000Z | Open filing evidence |
| 2023-01-02 – 2023-04-02 | 563254000 | USD | 2024-05-03 · 20:07:14.000Z | Open filing evidence |
| 2022-10-03 – 2023-04-02 | 1034322000 | USD | 2024-05-03 · 20:07:14.000Z | Open filing evidence |
| 2022-01-03 – 2022-04-03 | 448956000 | USD | 2022-05-06 · 20:08:42.000Z | Open filing evidence |
| 2021-10-04 – 2022-04-03 | 905054000 | USD | 2022-05-06 · 20:08:42.000Z | Open filing evidence |
| 2020-09-28 – 2021-10-03 | 1942958000 | USD | 2021-11-24 · 21:09:30.000Z | Open filing evidence |
| 2021-03-29 – 2021-06-27 | 488700000 | USD | 2021-07-30 · 20:20:02.000Z | Open filing evidence |
| 2020-09-28 – 2021-06-27 | 1431151000 | USD | 2021-07-30 · 20:20:02.000Z | Open filing evidence |
| 2020-12-28 – 2021-03-28 | 432570000 Restated | USD | 2022-05-06 · 20:08:42.000Z | Open filing evidence |
| 2020-09-28 – 2021-03-28 | 857233000 Restated | USD | 2022-05-06 · 20:08:42.000Z | Open filing evidence |
| 2019-09-30 – 2020-09-27 | 1778922000 | USD | 2021-11-24 · 21:09:30.000Z | Open filing evidence |
| 2020-03-30 – 2020-06-28 | 432180000 | USD | 2021-07-30 · 20:20:02.000Z | Open filing evidence |
| 2019-09-30 – 2020-06-28 | 1326487000 | USD | 2021-07-30 · 20:20:02.000Z | Open filing evidence |
| 2019-12-30 – 2020-03-29 | 436903000 | USD | 2021-04-30 · 20:12:57.000Z | Open filing evidence |
| 2019-09-30 – 2020-03-29 | 894307000 | USD | 2021-04-30 · 20:12:57.000Z | Open filing evidence |
| 2018-10-01 – 2019-09-29 | 1820671000 | USD | 2021-11-24 · 21:09:30.000Z | Open filing evidence |
| 2019-04-01 – 2019-06-30 | 491989000 | USD | 2020-07-31 · 20:17:54.000Z | Open filing evidence |
| 2018-10-01 – 2019-06-30 | 1321486000 | USD | 2020-07-31 · 20:17:54.000Z | Open filing evidence |
| 2018-12-31 – 2019-03-31 | 417526000 | USD | 2020-05-01 · 19:50:35.000Z | Open filing evidence |
| 2018-10-01 – 2019-03-31 | 829497000 | USD | 2020-05-01 · 19:50:35.000Z | Open filing evidence |
Remediation And Construction Management · Operating Segments
Statement Business Segments · Consolidation Items
Source dimensions
us-gaap:StatementBusinessSegmentsAxis=ttek:RemediationAndConstructionManagementMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember| Period | Value | Unit | Filed | Evidence |
|---|---|---|---|---|
| 2020-09-28 – 2021-10-03 | 613000 | USD | 2021-11-24 · 21:09:30.000Z | Open filing evidence |
| 2020-12-28 – 2021-03-28 | 470000 | USD | 2021-04-30 · 20:12:57.000Z | Open filing evidence |
| 2020-09-28 – 2021-03-28 | 470000 | USD | 2021-04-30 · 20:12:57.000Z | Open filing evidence |
| 2019-09-30 – 2020-09-27 | 198000 | USD | 2021-11-24 · 21:09:30.000Z | Open filing evidence |
| 2019-12-30 – 2020-03-29 | 5000 | USD | 2021-04-30 · 20:12:57.000Z | Open filing evidence |
| 2019-09-30 – 2020-03-29 | 150000 | USD | 2021-04-30 · 20:12:57.000Z | Open filing evidence |
| 2018-10-01 – 2019-09-29 | -1542000 | USD | 2021-11-24 · 21:09:30.000Z | Open filing evidence |