v3.26.3
Share Repurchase Plans (Details) - Knight-Swift Share Repurchase Plan, April 19, 2022 - USD ($)
shares in Thousands, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Apr. 19, 2022
Class of Stock [Line Items]            
Share repurchase plan, authorized amount, value           $ 350,000
Share repurchase, shares 0   0 0    
Company shares repurchased, value $ 0 $ 0 $ 0 $ 0    
Share repurchase plan, remaining authorized amount, value $ 200,000   $ 200,000   $ 200,000