v3.26.1
Segment Information - Summary of Adjusted EBITDA Business Segment Information (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Segment Reporting Information [Line Items]        
Revenue $ 1,575,867 $ 1,584,323 $ 3,067,043 $ 3,138,683
Direct cost of contracts (1,280,629) (1,235,970) (2,414,385) (2,436,347)
Selling, general and administrative expenses (97,714) (91,771) (191,515) (183,263)
Equity in earnings (losses) of unconsolidated joint ventures (33,748) (642) (27,592) (1,329)
Other segment items (136,555) (122,675) (267,876) (250,760)
Adjusted EBITDA attributable to Parsons Corporation 27,221 133,265 165,675 266,984
Reconciliation: Segment Adjusted EBITDA to Net Income Attributable to Parsons Corporation        
Adjusted EBITDA attributable to noncontrolling interests 14,999 15,866 27,474 30,923
Depreciation and amortization (36,637) (28,592) (72,563) (55,995)
Interest expense, net (15,821) (11,501) (30,008) (21,605)
Income tax expense (4,222) (18,690) (20,309) (37,667)
Equity-based compensation expense (10,077) (11,519) (19,531) (18,622)
Transaction related costs 7,126 (5,135) (1,313) (8,836)
Restructuring expense   (2,361)   (2,361)
Other 16,946 (844) 15,321 (545)
Net (loss) income including noncontrolling interests (465) 70,489 64,746 152,276
Net income attributable to noncontrolling interests (14,754) (15,259) (27,039) (30,843)
Net (loss) income attributable to Parsons Corporation (15,219) 55,230 37,707 121,433
Federal Solution Segment        
Segment Reporting Information [Line Items]        
Revenue 760,868 805,464 1,519,216 1,648,021
Direct cost of contracts (667,668) (642,807) (1,253,083) (1,304,719)
Selling, general and administrative expenses (48,908) (43,208) (95,250) (88,617)
Equity in earnings (losses) of unconsolidated joint ventures 1,451 989 3,243 (3)
Other segment items (59,529) (53,366) (116,359) (112,078)
Adjusted EBITDA attributable to Parsons Corporation (13,786) 67,072 57,767 142,604
Critical Infrastructure        
Segment Reporting Information [Line Items]        
Revenue 814,999 778,859 1,547,827 1,490,662
Direct cost of contracts (612,961) (593,163) (1,161,302) (1,131,628)
Selling, general and administrative expenses (48,806) (48,563) (96,265) (94,646)
Equity in earnings (losses) of unconsolidated joint ventures (35,199) (1,631) (30,835) (1,326)
Other segment items (77,026) (69,309) (151,517) (138,682)
Adjusted EBITDA attributable to Parsons Corporation $ 41,007 $ 66,193 $ 107,908 $ 124,380