CONSOLIDATED CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Millions	Total	Stockholders’ Equity Attributable to Avis Budget Group, Inc.	Common Stock	Additional Paid-in Capital	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Non-controlling Interests
Beginning balance (in shares) at Dec. 31, 2020			137,100
Beginning balance at Dec. 31, 2020	$ (155)	$ (155)	$ 1	$ 6,668	$ (1,470)	$ (187)	$ (5,167)	$ 0
Treasury stock, beginning balance (in shares) at Dec. 31, 2020							(67,300)
Comprehensive income:
Net income	902	903			903			(1)
Other comprehensive income (loss)	11	11				11
Comprehensive income attributable to Avis Budget Group, Inc.	913	914			903	11		(1)
Contributions from non-controlling interests	38	24		24				14
Net activity related to restricted stock units (in shares)							300
Net activity related to restricted stock units	10	10		(19)			$ 29
Repurchases of common stock (in shares)							(11,700)
Repurchases of common stock	(1,004)	(1,004)					$ (1,004)
Ending balance (in shares) at Sep. 30, 2021			137,100
Ending balance at Sep. 30, 2021	(198)	(211)	$ 1	6,673	(567)	(176)	$ (6,142)	13
Treasury stock, ending balance (in shares) at Sep. 30, 2021							(78,700)
Beginning balance (in shares) at Dec. 31, 2020			137,100
Beginning balance at Dec. 31, 2020	(155)	(155)	$ 1	6,668	(1,470)	(187)	$ (5,167)	0
Treasury stock, beginning balance (in shares) at Dec. 31, 2020							(67,300)
Ending balance (in shares) at Dec. 31, 2021			137,100
Ending balance at Dec. 31, 2021	$ (209)	(220)	$ 1	6,676	(185)	(133)	$ (6,579)	11
Treasury stock, ending balance (in shares) at Dec. 31, 2021	(81,000)						(81,200)
Beginning balance (in shares) at Jun. 30, 2021			137,100
Beginning balance at Jun. 30, 2021	$ 92	92	$ 1	6,646	(1,242)	(161)	$ (5,152)	0
Treasury stock, beginning balance (in shares) at Jun. 30, 2021							(67,100)
Comprehensive income:
Net income	674	675			675			(1)
Other comprehensive income (loss)	(15)	(15)				(15)
Comprehensive income attributable to Avis Budget Group, Inc.	659	660			675	(15)		(1)
Contributions from non-controlling interests	38	24		24				14
Net activity related to restricted stock units (in shares)							0
Net activity related to restricted stock units	7	7		3			$ 4
Repurchases of common stock (in shares)							(11,600)
Repurchases of common stock	(994)	(994)					$ (994)
Ending balance (in shares) at Sep. 30, 2021			137,100
Ending balance at Sep. 30, 2021	(198)	(211)	$ 1	6,673	(567)	(176)	$ (6,142)	13
Treasury stock, ending balance (in shares) at Sep. 30, 2021							(78,700)
Beginning balance (in shares) at Dec. 31, 2021			137,100
Beginning balance at Dec. 31, 2021	$ (209)	(220)	$ 1	6,676	(185)	(133)	$ (6,579)	11
Treasury stock, beginning balance (in shares) at Dec. 31, 2021	(81,000)						(81,200)
Comprehensive income:
Net income	$ 2,332	2,341			2,341			(9)
Other comprehensive income (loss)	(52)	(52)				(52)
Comprehensive income attributable to Avis Budget Group, Inc.	2,280	2,289			2,341	(52)		(9)
Contributions from non-controlling interests	40	40		40				0
Net activity related to restricted stock units (in shares)							300
Net activity related to restricted stock units	(42)	(42)		(40)			$ (2)
Repurchases of common stock (in shares)							(13,200)
Repurchases of common stock	(2,576)	(2,576)					$ (2,576)
Ending balance (in shares) at Sep. 30, 2022			137,100
Ending balance at Sep. 30, 2022	$ (507)	(509)	$ 1	6,676	2,156	(185)	$ (9,157)	2
Treasury stock, ending balance (in shares) at Sep. 30, 2022	(94,000)						(94,100)
Beginning balance (in shares) at Jun. 30, 2022			137,100
Beginning balance at Jun. 30, 2022	$ (649)	(654)	$ 1	6,643	1,122	(130)	$ (8,290)	5
Treasury stock, beginning balance (in shares) at Jun. 30, 2022							(88,800)
Comprehensive income:
Net income	1,031	1,034			1,034			(3)
Other comprehensive income (loss)	(55)	(55)				(55)
Comprehensive income attributable to Avis Budget Group, Inc.	976	979			1,034	(55)		(3)
Contributions from non-controlling interests	40	40		40
Net activity related to restricted stock units	(6)	(6)		(7)			$ 1
Repurchases of common stock (in shares)							(5,300)
Repurchases of common stock	(868)	(868)					$ (868)
Ending balance (in shares) at Sep. 30, 2022			137,100
Ending balance at Sep. 30, 2022	$ (507)	$ (509)	$ 1	$ 6,676	$ 2,156	$ (185)	$ (9,157)	$ 2
Treasury stock, ending balance (in shares) at Sep. 30, 2022	(94,000)						(94,100)