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SEGMENT AND GEOGRAPHIC INFORMATION - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Segment Reporting Information [Line Items] |  |  |  |
Revenue | $ 1,026,106 | $ 916,270 | $ 2,848,137 | $ 2,556,539
Total cost of services provided (exclusive of depreciation and amortization below) | 467,450 | 421,892 | 1,329,445 | 1,197,735
Total sales, general and administrative | 301,404 | 274,918 | 859,513 | 769,522
Depreciation and amortization | 32,231 | 27,664 | 93,177 | 82,685
Interest expense, net | 7,942 | 7,150 | 21,118 | 22,650
Income tax expense | 53,902 | 48,315 | 135,954 | 124,176
NET INCOME | 163,527 | 136,913 | 410,264 | 360,704
Reportable Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 1,026,106 | 916,270 | 2,848,137 | 2,556,539
Employee expenses | 312,249 | 278,296 | 872,326 | 784,868
Materials and supplies | 62,933 | 56,675 | 170,924 | 158,502
Insurance and claims | 11,127 | 16,649 | 48,385 | 49,327
Fleet expenses | 38,997 | 33,650 | 117,688 | 99,000
Other cost of services provided | 42,144 | 36,622 | 120,122 | 106,038
Total cost of services provided (exclusive of depreciation and amortization below) | 467,450 | 421,892 | 1,329,445 | 1,197,735
Selling and marketing expenses | 138,881 | 124,388 | 377,309 | 332,749
Administrative employee expenses | 88,601 | 79,507 | 259,384 | 234,701
Insurance and claims | 6,929 | 10,045 | 29,872 | 29,659
Fleet expenses | 9,502 | 8,297 | 29,348 | 25,257
Other sales, general and administrative | 57,491 | 52,681 | 163,600 | 147,156
Total sales, general and administrative | 301,404 | 274,918 | 859,513 | 769,522
Depreciation and amortization | 32,231 | 27,664 | 93,177 | 82,685
Interest expense, net | 7,942 | 7,150 | 21,118 | 22,650
Other (income) expense, net | (350) | (582) | (1,334) | (933)
Income tax expense | 53,902 | 48,315 | 135,954 | 124,176
NET INCOME | $ 163,527 | $ 136,913 | $ 410,264 | $ 360,704

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