CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Statement of Cash Flows [Abstract]
Document Fiscal Year Focus	2018
Operating activities
Net income	$ 152	$ 141
Adjustments to reconcile net income to net cash provided by operating activities:
Vehicle depreciation	1,536	1,500
(Gain) loss on sale of vehicles, net	(35)	53
Non-vehicle related depreciation and amortization	190	194
Stock-based compensation	18	8
Amortization of debt financing fees	21	25
Early extinguishment of debt	5	3
Net changes in assets and liabilities:
Receivables	(140)	(112)
Income taxes and deferred income taxes	78	16
Accounts payable and other current liabilities	138	74
Other, net	132	139
Net cash provided by operating activities	2,095	2,041
Investing activities
Property and equipment additions	(157)	(138)
Proceeds received on asset sales	9	6
Net assets acquired (net of cash acquired)	(64)	(17)
Other, net	(44)	6
Net cash used in investing activities exclusive of vehicle programs	(256)	(143)
Vehicle programs:
Investment in vehicles	(10,079)	(9,672)
Proceeds received on disposition of vehicles	6,752	6,872
Investment in debt securities of Avis Budget Rental Car Funding (AESOP) LLC—related party	(116)	(33)
Proceeds from debt securities of Avis Budget Rental Car Funding (AESOP) LLC—related party	22	0
Net cash used in investing activities of vehicle programs	(3,421)	(2,833)
Net cash used in investing activities	(3,677)	(2,976)
Financing activities
Proceeds from long-term borrowings	81	589
Payments on long-term borrowings	(99)	(596)
Proceeds from (Repayments of) Short-term Debt	(4)	(3)
Repurchases of common stock	(143)	(144)
Debt financing fees	(9)	(9)
Other, net	3	0
Net cash used in financing activities exclusive of vehicle programs	(171)	(163)
Vehicle programs:
Proceeds from borrowings	13,371	14,276
Payments on borrowings	(11,727)	(12,930)
Debt financing fees	(19)	(8)
Net cash provided by financing activities of vehicle programs	1,625	1,338
Net cash provided by financing activities	1,454	1,175
Effect of changes in exchange rates on cash and cash equivalents, program and restricted cash	(5)	41
Net (decrease) increase in cash and cash equivalents, program and restricted cash	(133)	281
Cash and cash equivalents, program and restricted cash, beginning of period	901	720
Cash and cash equivalents, program and restricted cash, end of period	$ 768	$ 1,001