Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Income Statement [Abstract]
Revenue	$ 1,173,466	$ 949,069
Direct cost of contracts	917,188	733,900
Equity in (losses) earnings of unconsolidated joint ventures	(5,840)	5,598
Selling, general and administrative expenses	199,308	185,077
Operating income	51,130	35,690
Interest income	793	65
Interest expense	(6,458)	(3,938)
Other income (expense), net	1,314	145
Total other income (expense)	(4,351)	(3,728)
Income before income tax expense	46,779	31,962
Income tax expense	(11,503)	(8,119)
Net income including noncontrolling interests	35,276	23,843
Net income attributable to noncontrolling interests	(9,723)	(3,176)
Net income attributable to Parsons Corporation	$ 25,553	$ 20,667
Earnings per share:
Basic	$ 0.24	$ 0.20
Diluted	$ 0.23	$ 0.19