CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (1,817)	$ 1,635	$ 2,756
Less: Net income (loss) attributable to non-controlling interests	4	3	(8)
Net income (loss) attributable to Avis Budget Group, Inc.	(1,821)	1,632	2,764
Currency translation adjustments:
Currency translation adjustments, net of tax of $(19), $7 and $(11), respectively	(122)	27	(46)
Cash flow hedges:
Net unrealized holding gains (losses), net of tax of $(5), $(2), and $(20), respectively	15	5	57
Reclassification of cash flow hedges to earnings, net of tax of $7, $5, and $(2), respectively	(21)	(13)	7
Minimum pension liability adjustment:
Pension and post-retirement benefits, net of tax of $(4), $6, and $(4), respectively	10	(18)	11
Reclassification of pension and post-retirement benefits to earnings, net of tax of $(1), $(1), and $(2), respectively	4	4	3
Other comprehensive income (loss)	(114)	5	32
Total comprehensive income (loss) attributable to Avis Budget Group, Inc.	$ (1,935)	$ 1,637	$ 2,796