CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended								6 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Jun. 30, 2014	Jun. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues:
Worldwide car rental	$ 2,000	$ 2,563	$ 2,304	$ 2,039	$ 2,019	$ 2,538	$ 2,197	$ 1,955	$ 4,343	$ 4,153	$ 6,907	$ 6,690	$ 8,907	$ 8,709	$ 7,153
Worldwide equipment rental	416	413	384	358	401	403	381	353	743	734	1,155	1,138	1,571	1,539	1,382
All other operations	143	145	142	139	135	134	130	129	280	258	425	392	568	527	478
Total revenues	2,559	3,121	2,830	2,536	2,555	3,075	2,708	2,437	5,366	5,145	8,487	8,220	11,046	10,775	9,013
Expenses:
Direct operating	1,575	1,702	1,594	1,443	1,449	1,547	1,417	1,364	3,037	2,781	4,738	4,328	6,314	5,777	4,861
Depreciation of revenue earning equipment and lease charges, net	853	746	708	726	641	672	632	589	1,434	1,220	2,180	1,893	3,034	2,533	2,128
Selling, general and administrative	246	303	265	276	234	282	287	250	541	538	844	819	1,088	1,053	978
Interest expense, net	163	163	162	153	168	173	168	161	315	329	479	502	641	669	596
Other (income) expense, net	6	3	(22)	(3)	21	44	(2)	0	(25)	(2)	(22)	42	(15)	64	33
Total expenses	2,843	2,917	2,707	2,595	2,513	2,718	2,502	2,364	5,302	4,866	8,219	7,584	11,062	10,096	8,596
Total	(284)	204	123	(59)	42	357	206	73	64	279	268	636	(16)	679	417
(Provision) benefit for taxes on income (loss)	50	(54)	(50)	(8)	(56)	(128)	(86)	(59)	(58)	(145)	(112)	(272)	(62)	(329)	(200)
Net income (loss)	$ (234)	$ 150	$ 73	$ (67)	$ (14)	$ 229	$ 120	$ 14	$ 6	$ 134	$ 156	$ 364	$ (78)	$ 350	$ 217