Guarantor And Non-Guarantor Consolidating Condensed Financial Statements (Consolidating Condensed Balance Sheets) (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 569	$ 606	$ 606	$ 534
Receivables, net	591	553
Deferred income taxes	153	146
Other current assets	558	405
Total current assets	1,871	1,710
Property and equipment, net	559	529
Deferred income taxes	1,346	1,454
Goodwill	646	375
Other intangibles, net	910	731
Other non-current assets	361	320
Total assets exclusive of assets under vehicle programs	5,693	5,119
Assets under vehicle programs:
Program cash	53	24
Vehicles, net	10,162	9,274
Receivables from vehicle manufacturers and other	287	439
Investment in Avis Budget Rental Car Funding (AESOP) LLC-related party	362	362
Total Assets under vehicle programs	10,864	10,099
Total assets	16,557	15,218
Current liabilities:
Accounts payable and other current liabilities	1,546	1,421
Short Term Debt And Current Portion Of Long Term Debt	29	57
Total current liabilities	1,575	1,478
Long-term debt	3,318	2,848
Other non-current liabilities	884	871
Total liabilities exclusive of liabilities under vehicle programs	5,777	5,197
Liabilities under vehicle programs:
Debt	1,589	1,603
Due to Avis Budget Rental Car Funding (AESOP) LLC-related party	5,873	5,203
Deferred income taxes	2,126	2,163
Other	498	295
Total Liabilities under vehicle programs	10,086	9,264
Total stockholders' equity	694	757
Total liabilities and stockholders' equity	16,557	15,218
Parent [Member]
Current assets:
Cash and cash equivalents	6	5	5	2
Deferred income taxes	3	3
Other current assets	4	5
Total current assets	13	13
Deferred income taxes	20	23
Other non-current assets	108	109
Intercompany receivables (payables)	142	142
Investment in subsidiaries	603	723
Total assets exclusive of assets under vehicle programs	886	1,010
Assets under vehicle programs:
Total assets	886	1,010
Current liabilities:
Accounts payable and other current liabilities	13	22
Total current liabilities	13	22
Long-term debt	77	128
Other non-current liabilities	102	103
Total liabilities exclusive of liabilities under vehicle programs	192	253
Liabilities under vehicle programs:
Total stockholders' equity	694	757
Total liabilities and stockholders' equity	886	1,010
Subsidiary Issuers [Member]
Current assets:
Cash and cash equivalents	17	102	245	234
Deferred income taxes		1
Other current assets	88	73
Total current assets	105	176
Property and equipment, net	93	90
Deferred income taxes	1,179	1,216
Other intangibles, net	42	43
Other non-current assets	87	80
Intercompany receivables (payables)	100	141
Investment in subsidiaries	2,546	2,030
Total assets exclusive of assets under vehicle programs	4,152	3,776
Assets under vehicle programs:
Vehicles, net	7	7
Total Assets under vehicle programs	7	7
Total assets	4,159	3,783
Current liabilities:
Accounts payable and other current liabilities	214	250
Short Term Debt And Current Portion Of Long Term Debt	15	13
Total current liabilities	229	263
Long-term debt	3,233	2,712
Other non-current liabilities	91	79
Total liabilities exclusive of liabilities under vehicle programs	3,553	3,054
Liabilities under vehicle programs:
Debt	3	4
Other		2
Total Liabilities under vehicle programs	3	6
Total stockholders' equity	603	723
Total liabilities and stockholders' equity	4,159	3,783
Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents	8		2	1
Receivables, net	184	156
Deferred income taxes	141	138
Other current assets	116	81
Total current assets	449	375
Property and equipment, net	310	276
Deferred income taxes	148	223
Goodwill	348	74
Other intangibles, net	530	341
Other non-current assets	21	14
Intercompany receivables (payables)	282	174
Investment in subsidiaries	3,230	3,293
Total assets exclusive of assets under vehicle programs	5,318	4,770
Assets under vehicle programs:
Vehicles, net	11	13
Total Assets under vehicle programs	11	13
Total assets	5,329	4,783
Current liabilities:
Accounts payable and other current liabilities	557	490
Short Term Debt And Current Portion Of Long Term Debt	3	3
Total current liabilities	560	493
Long-term debt	8	8
Other non-current liabilities	276	277
Total liabilities exclusive of liabilities under vehicle programs	844	778
Liabilities under vehicle programs:
Deferred income taxes	1,939	1,975
Total Liabilities under vehicle programs	1,939	1,975
Total stockholders' equity	2,546	2,030
Total liabilities and stockholders' equity	5,329	4,783
Non-Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents	538	499	354	297
Receivables, net	407	397
Deferred income taxes	12	4
Other current assets	350	246
Total current assets	1,307	1,146
Property and equipment, net	156	163
Goodwill	298	301
Other intangibles, net	338	347
Other non-current assets	145	117
Intercompany receivables (payables)	(524)	(457)
Total assets exclusive of assets under vehicle programs	1,720	1,617
Assets under vehicle programs:
Program cash	53	24
Vehicles, net	10,144	9,254
Receivables from vehicle manufacturers and other	287	439
Investment in Avis Budget Rental Car Funding (AESOP) LLC-related party	362	362
Total Assets under vehicle programs	10,846	10,079
Total assets	12,566	11,696
Current liabilities:
Accounts payable and other current liabilities	765	659
Short Term Debt And Current Portion Of Long Term Debt	11	41
Total current liabilities	776	700
Other non-current liabilities	416	420
Total liabilities exclusive of liabilities under vehicle programs	1,192	1,120
Liabilities under vehicle programs:
Debt	1,586	1,599
Due to Avis Budget Rental Car Funding (AESOP) LLC-related party	5,873	5,203
Deferred income taxes	187	188
Other	498	293
Total Liabilities under vehicle programs	8,144	7,283
Total stockholders' equity	3,230	3,293
Total liabilities and stockholders' equity	12,566	11,696
Eliminations [Member]
Current assets:
Deferred income taxes	(3)
Total current assets	(3)
Deferred income taxes	(1)	(8)
Investment in subsidiaries	(6,379)	(6,046)
Total assets exclusive of assets under vehicle programs	(6,383)	(6,054)
Assets under vehicle programs:
Total assets	(6,383)	(6,054)
Current liabilities:
Accounts payable and other current liabilities	(3)
Total current liabilities	(3)
Other non-current liabilities	(1)	(8)
Total liabilities exclusive of liabilities under vehicle programs	(4)	(8)
Liabilities under vehicle programs:
Total stockholders' equity	(6,379)	(6,046)
Total liabilities and stockholders' equity	$ (6,383)	$ (6,054)