CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss) attributable to Avis Budget Group, Inc.	$ 1,285	$ (684)	$ 302
Less: net loss attributable to non-controlling interests	(2)	0	0
Other comprehensive income (loss), net of tax
Currency translation adjustments, net of tax of $(20), $23 and $(6), respectively	(35)	33	12
Reclassification of currency translation adjustments to earnings	11	(2)	0
Cash flow hedges:
Net unrealized holding gains (losses), net of tax of $(6), $14, and $7, respectively	18	(39)	(20)
Reclassification of cash flow hedges to earnings, net of tax of $(5), $(3), and $1, respectively	14	8	(3)
Minimum pension liability adjustment:
Pension and post-retirement benefits, net of tax of $(13), $12, and $6, respectively	39	(36)	(20)
Reclassification of pension and post-retirement benefits to earnings, net of tax of $(2), $(3), and $(2), respectively	7	6	6
Other comprehensive income (loss)	54	(30)	(25)
Total comprehensive income (loss) attributable to Avis Budget Group, Inc.	$ 1,339	$ (714)	$ 277