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, 2021			137,100
Beginning balance at Dec. 31, 2021	$ (209.0)	$ (220.0)	$ 1.0	$ 6,676.0	$ (185.0)	$ (133.0)	$ (6,579.0)	$ 11.0
Treasury stock, beginning balance (in shares) at Dec. 31, 2021							(81,200)
Comprehensive income:
Net income (loss)	1,301.0	1,307.0			1,307.0			(6.0)
Other comprehensive income (loss)	3.0	3.0				3.0
Total comprehensive Income (loss)	1,304.0	1,310.0			1,307.0	3.0		(6.0)
Net activity related to restricted stock units (in shares)							300
Net activity related to restricted stock units	(36.0)	(36.0)		(33.0)			$ (3.0)
Repurchases of common stock (in shares)							(7,900)
Repurchases of common stock	(1,708.0)	(1,708.0)					$ (1,708.0)
Ending balance (in shares) at Jun. 30, 2022			137,100
Ending balance at Jun. 30, 2022	(649.0)	(654.0)	$ 1.0	6,643.0	1,122.0	(130.0)	$ (8,290.0)	5.0
Treasury stock, ending balance (in shares) at Jun. 30, 2022							(88,800)
Beginning balance (in shares) at Mar. 31, 2022			137,100
Beginning balance at Mar. 31, 2022	(983.0)	(992.0)	$ 1.0	6,646.0	344.0	(94.0)	$ (7,889.0)	9.0
Treasury stock, beginning balance (in shares) at Mar. 31, 2022							(87,400)
Comprehensive income:
Net income (loss)	774.0	778.0			778.0			(4.0)
Other comprehensive income (loss)	(36.0)	(36.0)				(36.0)
Total comprehensive Income (loss)	738.0	742.0			778.0	(36.0)		(4.0)
Net activity related to restricted stock units (in shares)							100
Net activity related to restricted stock units	(3.0)	(3.0)		(3.0)			$ 0.0
Repurchases of common stock (in shares)							(1,500)
Repurchases of common stock	(401.0)	(401.0)					$ (401.0)
Ending balance (in shares) at Jun. 30, 2022			137,100
Ending balance at Jun. 30, 2022	(649.0)	(654.0)	$ 1.0	6,643.0	1,122.0	(130.0)	$ (8,290.0)	5.0
Treasury stock, ending balance (in shares) at Jun. 30, 2022							(88,800)
Beginning balance (in shares) at Dec. 31, 2022			137,100
Beginning balance at Dec. 31, 2022	$ (700.0)	(703.0)	$ 1.0	6,666.0	2,579.0	(101.0)	$ (9,848.0)	3.0
Treasury stock, beginning balance (in shares) at Dec. 31, 2022	(98,000)						(97,600)
Comprehensive income:
Net income (loss)	$ 748.0	747.0			747.0			1.0
Other comprehensive income (loss)	11.0	11.0				11.0
Total comprehensive Income (loss)	759.0	758.0			747.0	11.0		1.0
Net activity related to restricted stock units (in shares)							300
Net activity related to restricted stock units	$ (38.0)	(38.0)		(41.0)			$ 3.0
Repurchases of common stock (in shares)	(723)						(700)
Repurchases of common stock	$ (146.1)	(146.0)					$ (146.0)
Ending balance (in shares) at Jun. 30, 2023			137,100
Ending balance at Jun. 30, 2023	$ (125.0)	(129.0)	$ 1.0	6,625.0	3,326.0	(90.0)	$ (9,991.0)	4.0
Treasury stock, ending balance (in shares) at Jun. 30, 2023	(97,000)						(98,000)
Beginning balance (in shares) at Mar. 31, 2023			137,100
Beginning balance at Mar. 31, 2023	$ (441.0)	(444.0)	$ 1.0	6,620.0	2,891.0	(111.0)	$ (9,845.0)	3.0
Treasury stock, beginning balance (in shares) at Mar. 31, 2023							(97,300)
Comprehensive income:
Net income (loss)	436.0	435.0			435.0			1.0
Other comprehensive income (loss)	21.0	21.0				21.0
Total comprehensive Income (loss)	457.0	456.0			435.0	21.0		1.0
Net activity related to restricted stock units (in shares)							0
Net activity related to restricted stock units	5.0	5.0		5.0			$ 0.0
Repurchases of common stock (in shares)							(700)
Repurchases of common stock	(146.0)	(146.0)					$ (146.0)
Ending balance (in shares) at Jun. 30, 2023			137,100
Ending balance at Jun. 30, 2023	$ (125.0)	$ (129.0)	$ 1.0	$ 6,625.0	$ 3,326.0	$ (90.0)	$ (9,991.0)	$ 4.0
Treasury stock, ending balance (in shares) at Jun. 30, 2023	(97,000)						(98,000)