Consolidating Condensed Balance Sheets (Detail) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 615	$ 611
Receivables, net	955	922
Other current assets	604	533
Total current assets	2,174	2,066
Property and equipment, net	736	704
Deferred income taxes	1,301	931
Goodwill	1,092	1,073	$ 1,007
Other intangibles, net	825	850
Other non-current assets	242	196
Intercompany receivables (payables)	0	0
Investment in subsidiaries	0	0
Total assets exclusive of assets under vehicle programs	6,370	5,820
Assets under vehicle programs:
Program cash	115	283
Vehicles, net	11,474	10,626
Receivables from vehicle manufacturers and other	631	547
Investment in Avis Budget Rental Car Funding (AESOP) LLC—related party	559	423
Assets under vehicle programs	12,779	11,879	11,578
Total assets	19,149	17,699
Current liabilities:
Accounts payable and other current liabilities	1,693	1,619
Short-term debt and current portion of long-term debt	23	26
Total current liabilities	1,716	1,645
Long-term debt	3,528	3,573
Other non-current liabilities	767	717
Due to Related Parties, Noncurrent	0	0
Total liabilities exclusive of liabilities under vehicle programs	6,011	5,935
Liabilities under vehicle programs:
Debt	2,874	2,741
Due to Avis Budget Rental Car Funding (AESOP) LLC-related party	7,358	6,480
Deferred Income Taxes	1,961	1,594
Other	531	376
Total Liabilities under vehicle programs	12,724	11,191
Total stockholders’ equity	414	573	$ 221	$ 439
Total liabilities and stockholders’ equity	19,149	17,699
Parent Company
Current assets:
Cash and cash equivalents	1	4
Receivables, net	0	0
Other current assets	5	4
Total current assets	6	8
Property and equipment, net	0	0
Deferred income taxes	13	14
Goodwill	0	0
Other intangibles, net	0	0
Other non-current assets	47	46
Intercompany receivables (payables)	159	187
Investment in subsidiaries	246	381
Total assets exclusive of assets under vehicle programs	471	636
Assets under vehicle programs:
Program cash	0	0
Vehicles, net	0	0
Receivables from vehicle manufacturers and other	0	0
Investment in Avis Budget Rental Car Funding (AESOP) LLC—related party	0	0
Assets under vehicle programs	0	0
Total assets	471	636
Current liabilities:
Accounts payable and other current liabilities	16	23
Short-term debt and current portion of long-term debt	0	0
Total current liabilities	16	23
Long-term debt	0	0
Other non-current liabilities	41	40
Due to Related Parties, Noncurrent	0	0
Total liabilities exclusive of liabilities under vehicle programs	57	63
Liabilities under vehicle programs:
Debt	0	0
Due to Avis Budget Rental Car Funding (AESOP) LLC-related party	0	0
Deferred Income Taxes	0	0
Other	0	0
Total Liabilities under vehicle programs	0	0
Total stockholders’ equity	414	573
Total liabilities and stockholders’ equity	471	636
Subsidiary Issuers
Current assets:
Cash and cash equivalents	12	14
Receivables, net	0	0
Other current assets	112	89
Total current assets	124	103
Property and equipment, net	199	167
Deferred income taxes	1,015	704
Goodwill	0	0
Other intangibles, net	26	27
Other non-current assets	39	29
Intercompany receivables (payables)	404	382
Investment in subsidiaries	4,786	4,681
Total assets exclusive of assets under vehicle programs	6,593	6,093
Assets under vehicle programs:
Program cash	0	0
Vehicles, net	55	34
Receivables from vehicle manufacturers and other	2	1
Investment in Avis Budget Rental Car Funding (AESOP) LLC—related party	0	0
Assets under vehicle programs	57	35
Total assets	6,650	6,128
Current liabilities:
Accounts payable and other current liabilities	246	207
Short-term debt and current portion of long-term debt	18	17
Total current liabilities	264	224
Long-term debt	2,501	2,910
Other non-current liabilities	87	83
Due to Related Parties, Noncurrent	3,524	2,515
Total liabilities exclusive of liabilities under vehicle programs	6,376	5,732
Liabilities under vehicle programs:
Debt	28	15
Due to Avis Budget Rental Car Funding (AESOP) LLC-related party	0	0
Deferred Income Taxes	0	0
Other	0	0
Total Liabilities under vehicle programs	28	15
Total stockholders’ equity	246	381
Total liabilities and stockholders’ equity	6,650	6,128
Guarantor Subsidiaries
Current assets:
Cash and cash equivalents	1	0
Receivables, net	239	255
Other current assets	116	101
Total current assets	356	356
Property and equipment, net	319	321
Deferred income taxes	207	154
Goodwill	471	471
Other intangibles, net	475	480
Other non-current assets	16	16
Intercompany receivables (payables)	2,104	1,506
Investment in subsidiaries	3,852	3,938
Total assets exclusive of assets under vehicle programs	7,800	7,242
Assets under vehicle programs:
Program cash	0	0
Vehicles, net	54	61
Receivables from vehicle manufacturers and other	0	0
Investment in Avis Budget Rental Car Funding (AESOP) LLC—related party	0	0
Assets under vehicle programs	54	61
Total assets	7,854	7,303
Current liabilities:
Accounts payable and other current liabilities	582	552
Short-term debt and current portion of long-term debt	3	3
Total current liabilities	585	555
Long-term debt	3	3
Other non-current liabilities	257	216
Due to Related Parties, Noncurrent	404	382
Total liabilities exclusive of liabilities under vehicle programs	1,249	1,156
Liabilities under vehicle programs:
Debt	49	57
Due to Avis Budget Rental Car Funding (AESOP) LLC-related party	0	0
Deferred Income Taxes	1,770	1,407
Other	0	2
Total Liabilities under vehicle programs	1,819	1,466
Total stockholders’ equity	4,786	4,681
Total liabilities and stockholders’ equity	7,854	7,303
Non-Guarantor Subsidiaries
Current assets:
Cash and cash equivalents	601	593
Receivables, net	716	667
Other current assets	371	339
Total current assets	1,688	1,599
Property and equipment, net	218	216
Deferred income taxes	66	59
Goodwill	621	602
Other intangibles, net	324	343
Other non-current assets	140	105
Intercompany receivables (payables)	1,262	824
Investment in subsidiaries	0	0
Total assets exclusive of assets under vehicle programs	4,319	3,748
Assets under vehicle programs:
Program cash	115	283
Vehicles, net	11,365	10,531
Receivables from vehicle manufacturers and other	629	546
Investment in Avis Budget Rental Car Funding (AESOP) LLC—related party	559	423
Assets under vehicle programs	12,668	11,783
Total assets	16,987	15,531
Current liabilities:
Accounts payable and other current liabilities	849	837
Short-term debt and current portion of long-term debt	2	6
Total current liabilities	851	843
Long-term debt	1,024	660
Other non-current liabilities	382	378
Due to Related Parties, Noncurrent	1	2
Total liabilities exclusive of liabilities under vehicle programs	2,258	1,883
Liabilities under vehicle programs:
Debt	2,797	2,669
Due to Avis Budget Rental Car Funding (AESOP) LLC-related party	7,358	6,480
Deferred Income Taxes	191	187
Other	531	374
Total Liabilities under vehicle programs	10,877	9,710
Total stockholders’ equity	3,852	3,938
Total liabilities and stockholders’ equity	16,987	15,531
Eliminations
Current assets:
Cash and cash equivalents	0	0
Receivables, net	0	0
Other current assets	0	0
Total current assets	0	0
Property and equipment, net	0	0
Deferred income taxes	0	0
Goodwill	0	0
Other intangibles, net	0	0
Other non-current assets	0	0
Intercompany receivables (payables)	(3,929)	(2,899)
Investment in subsidiaries	(8,884)	(9,000)
Total assets exclusive of assets under vehicle programs	(12,813)	(11,899)
Assets under vehicle programs:
Program cash	0	0
Vehicles, net	0	0
Receivables from vehicle manufacturers and other	0	0
Investment in Avis Budget Rental Car Funding (AESOP) LLC—related party	0	0
Assets under vehicle programs	0	0
Total assets	(12,813)	(11,899)
Current liabilities:
Accounts payable and other current liabilities	0	0
Short-term debt and current portion of long-term debt	0	0
Total current liabilities	0	0
Long-term debt	0	0
Other non-current liabilities	0	0
Due to Related Parties, Noncurrent	(3,929)	(2,899)
Total liabilities exclusive of liabilities under vehicle programs	(3,929)	(2,899)
Liabilities under vehicle programs:
Debt	0	0
Due to Avis Budget Rental Car Funding (AESOP) LLC-related party	0	0
Deferred Income Taxes	0	0
Other	0	0
Total Liabilities under vehicle programs	0	0
Total stockholders’ equity	(8,884)	(9,000)
Total liabilities and stockholders’ equity	$ (12,813)	$ (11,899)