v3.25.4
Earnings Per Share - Schedule of Numerator and Denominator used to Compute Basic and Diluted EPS (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Numerator for Basic and Diluted EPS:      
Net income attributable to Parsons Corporation $ 241,139 $ 235,053 $ 161,149
Convertible senior notes if-converted method interest adjustment 135 2,932 2,291
Diluted net income attributable to Parsons Corporation $ 241,274 $ 237,985 $ 163,440
Denominator for Basic and Diluted EPS:      
Basic weighted average number of shares outstanding 106,828 106,274 104,992
Dilutive effect of stock-based awards 1,418 1,778 1,173
Dilutive effect of warrants 286 494 0
Dilutive effect of convertible senior notes 1,161 3,628 8,917
Diluted weighted average number of shares outstanding 109,693 112,174 115,082
Earnings per share:      
Basic $ 2.26 $ 2.21 $ 1.53
Diluted $ 2.20 $ 2.12 $ 1.42