CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 1,635	$ 2,756	$ 1,283
Less: Net income (loss) attributable to non-controlling interests	3	(8)	(2)
Net income attributable to Avis Budget Group, Inc.	1,632	2,764	1,285
Other comprehensive income (loss), net of tax
Currency translation adjustments, net of tax of $7, $(11) and $(20), respectively	27	(46)	(35)
Reclassification of currency translation adjustments to earnings	0	0	11
Cash flow hedges:
Net unrealized holding gains (losses), net of tax of $(2), $(20), and $(6), respectively	5	57	18
Reclassification of cash flow hedges to earnings, net of tax of $5, $(2), and $(5), respectively	(13)	7	14
Minimum pension liability adjustment:
Pension and post-retirement benefits, net of tax of $6, $(4), and $(13), respectively	(18)	11	39
Reclassification of pension and post-retirement benefits to earnings, net of tax of $(1), $(2), and $(2), respectively	4	3	7
Other comprehensive income (loss)	5	32	54
Total comprehensive income attributable to Avis Budget Group, Inc.	$ 1,637	$ 2,796	$ 1,339