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 Other Comprehensive Income (Loss)	Treasury Stock	Non-controlling Interests
Beginning balance (in shares) at Dec. 31, 2022			137,100
Beginning balance at Dec. 31, 2022	$ (700)	$ (703)	$ 1	$ 6,666	$ 2,579	$ (101)	$ (9,848)	$ 3
Treasury stock, beginning balance (in shares) at Dec. 31, 2022							(97,600)
Comprehensive income (loss):
Net income (loss)	748	747			747			1
Other comprehensive income (loss)	11	11				11
Total comprehensive income (loss)	759	758			747	11		1
Net activity related to restricted stock units (in shares)							300
Net activity related to restricted stock units	$ (38)	(38)		(41)			$ 3
Repurchases of common stock (in shares)	(723)						(700)
Repurchases of common stock	$ (146)	(146)					$ (146)
Ending balance (in shares) at Jun. 30, 2023			137,100
Ending balance at Jun. 30, 2023	(125)	(129)	$ 1	6,625	3,326	(90)	$ (9,991)	4
Treasury stock, ending balance (in shares) at Jun. 30, 2023							(98,000)
Beginning balance (in shares) at Mar. 31, 2023			137,100
Beginning balance at Mar. 31, 2023	(441)	(444)	$ 1	6,620	2,891	(111)	$ (9,845)	3
Treasury stock, beginning balance (in shares) at Mar. 31, 2023							(97,300)
Comprehensive income (loss):
Net income (loss)	436	435			435			1
Other comprehensive income (loss)	21	21				21
Total comprehensive income (loss)	457	456			435	21		1
Net activity related to restricted stock units	5	5		5
Repurchases of common stock (in shares)							(700)
Repurchases of common stock	(146)	(146)					$ (146)
Ending balance (in shares) at Jun. 30, 2023			137,100
Ending balance at Jun. 30, 2023	(125)	(129)	$ 1	6,625	3,326	(90)	$ (9,991)	4
Treasury stock, ending balance (in shares) at Jun. 30, 2023							(98,000)
Beginning balance (in shares) at Dec. 31, 2023			137,100
Beginning balance at Dec. 31, 2023	$ (343)	(349)	$ 1	6,634	3,854	(96)	$ (10,742)	6
Treasury stock, beginning balance (in shares) at Dec. 31, 2023	(102,000)						(101,600)
Comprehensive income (loss):
Net income (loss)	$ (98)	(100)			(100)			2
Other comprehensive income (loss)	(39)	(39)				(39)
Total comprehensive income (loss)	(137)	(139)			(100)	(39)		2
Net activity related to restricted stock units (in shares)							200
Net activity related to restricted stock units	$ (2)	(2)		(18)	(3)		$ 19
Repurchases of common stock (in shares)	0
Ending balance (in shares) at Jun. 30, 2024			137,100
Ending balance at Jun. 30, 2024	$ (482)	(490)	$ 1	6,616	3,751	(135)	$ (10,723)	8
Treasury stock, ending balance (in shares) at Jun. 30, 2024	(101,000)						(101,400)
Beginning balance (in shares) at Mar. 31, 2024			137,100
Beginning balance at Mar. 31, 2024	$ (508)	(515)	$ 1	6,610	3,738	(140)	$ (10,724)	7
Treasury stock, beginning balance (in shares) at Mar. 31, 2024							(101,400)
Comprehensive income (loss):
Net income (loss)	15	14			14			1
Other comprehensive income (loss)	5	5				5
Total comprehensive income (loss)	20	19			14	5		1
Net activity related to restricted stock units	6	6		6	(1)		$ 1
Ending balance (in shares) at Jun. 30, 2024			137,100
Ending balance at Jun. 30, 2024	$ (482)	$ (490)	$ 1	$ 6,616	$ 3,751	$ (135)	$ (10,723)	$ 8
Treasury stock, ending balance (in shares) at Jun. 30, 2024	(101,000)						(101,400)