Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating activities
Net income	$ 302	$ 165	$ 361
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Vehicle depreciation	1,890	1,974	1,947
Amortization of Right-Of-Use Assets	989	0	0
(Gain) loss on sale of vehicles, net	(82)	(48)	52
Non-vehicle related depreciation and amortization	263	256	259
Deferred income taxes	(103)	14	(192)
Stock-based compensation	22	24	13
Amortization of debt financing fees	31	28	34
Early extinguishment of debt costs	12	19	3
Net change in assets and liabilities, excluding the impact of acquisitions and dispositions:
Receivables	10	(44)	(59)
Income taxes	(5)	35	(16)
Accounts payable and other current liabilities	84	48	49
Increase (Decrease) in Operating Liabilities	(981)	0	0
Other, net	154	138	197
Net cash provided by operating activities	2,586	2,609	2,648
Investing activities
Property and equipment additions	(250)	(231)	(197)
Proceeds received on asset sales	11	17	8
Net assets acquired (net of cash acquired)	(77)	(91)	(21)
Other, net	81	(44)	5
Net cash used in investing activities exclusive of vehicle programs	(235)	(349)	(205)
Vehicle programs:
Investment in vehicles	(12,887)	(12,589)	(11,538)
Proceeds received on disposition of vehicles	10,460	9,648	9,600
Repayments of Related Party Debt	(251)	(188)	(61)
Proceeds from Related Party Debt	161	52	0
Net Cash Used In Investing Activities Of Vehicle Programs	(2,517)	(3,077)	(1,999)
Net cash used in investing activities	(2,752)	(3,426)	(2,204)
Financing activities
Proceeds from long-term borrowings	402	485	589
Payments on long-term borrowings	(509)	(515)	(602)
Net change in short-term borrowings	(1)	(4)	(4)
Debt financing fees	(7)	(15)	(9)
Repurchases of common stock	(67)	(216)	(210)
Other, net	0	3	1
Net cash used in financing activities exclusive of vehicle programs	(182)	(262)	(235)
Vehicle programs:
Proceeds from borrowings	19,869	17,339	17,212
Payments on borrowings	(19,346)	(16,385)	(17,269)
Debt financing fees	(23)	(25)	(16)
Net cash provided by financing activities of vehicle programs	500	929	(73)
Net cash provided by (used in) financing activities	318	667	(308)
Effect of changes in exchange rates on cash and cash equivalents, program and restricted cash	13	(16)	45
Net increase (decrease) in cash and cash equivalents, program and restricted cash	165	(166)	181
Cash and cash equivalents, program and restricted cash, beginning of period	735	901	720
Cash and cash equivalents, program and restricted cash, end of period	900	735	901
Interest Paid, Including Capitalized Interest, Operating and Investing Activities [Abstract]
Interest Paid, Excluding Capitalized Interest, Operating Activities	509	497	460
Income Taxes Paid, Net [Abstract]
Income tax payments, net	$ 93	$ 53	$ 58