v3.25.2
Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Earnings Per Share [Abstract]        
Net income (loss) attributable to Avis Budget Group, Inc. for basic and diluted EPS $ 4 $ 14 $ (501) $ (100)
Basic weighted average shares outstanding (in shares) 35.2 35.6 35.2 35.6
Non-vested stock (in shares) 0.2 0.1 0.0 0.0
Diluted weighted average shares outstanding (in shares) 35.4 35.7 35.2 35.6
Earnings (loss) per share        
Basic (in usd per share) $ 0.10 $ 0.41 $ (14.24) $ (2.80)
Diluted (in usd per share) $ 0.10 $ 0.41 $ (14.24) $ (2.80)
Non-vested stock awards        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive securities (in shares) 0.1 0.2 0.4 0.4