Consolidating Condensed Balance Sheets (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 686	$ 615
Receivables, net	911	955
Other current assets	548	604
Total current assets	2,145	2,174
Property and equipment, net	792	736
Operating Lease, Right-of-Use Asset	2,596	0
Deferred income taxes	1,662	1,301
Goodwill	1,101	1,092	$ 1,073
Other intangibles, net	798	825
Other non-current assets	217	242
Intercompany receivables (payables)	0	0
Investment in subsidiaries	0	0
Total assets exclusive of assets under vehicle programs	9,311	6,370
Assets under vehicle programs:
Program cash	211	115
Vehicles, net	12,177	11,474
Receivables from vehicle manufacturers and other	778	631
Investment in Avis Budget Rental Car Funding (AESOP) LLC—related party	649	559
Assets under vehicle programs	13,815	12,779	11,879
Total assets	23,126	19,149
Current liabilities:
Accounts payable and other current liabilities	2,206	1,693
Short-term debt and current portion of long-term debt	19	23
Total current liabilities	2,225	1,716
Long-term debt	3,416	3,528
Operating Lease, Liability, Noncurrent	2,140	0
Other non-current liabilities	757	767
Due to Related Parties, Noncurrent	0	0
Total liabilities exclusive of liabilities under vehicle programs	8,538	6,011
Liabilities under vehicle programs:
Debt	3,132	2,874
Due to Avis Budget Rental Car Funding (AESOP) LLC-related party	7,936	7,358
Deferred Income Taxes	2,189	1,961
Other	675	531
Total Liabilities under vehicle programs	13,932	12,724
Total stockholders’ equity	656	414	$ 573	$ 221
Total liabilities and stockholders’ equity	23,126	19,149
Parent Company
Current assets:
Cash and cash equivalents	1	1
Receivables, net	0	0
Other current assets	0	5
Total current assets	1	6
Property and equipment, net	0	0
Operating Lease, Right-of-Use Asset	0
Deferred income taxes	13	13
Goodwill	0	0
Other intangibles, net	0	0
Other non-current assets	47	47
Intercompany receivables (payables)	172	159
Investment in subsidiaries	483	246
Total assets exclusive of assets under vehicle programs	716	471
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	716	471
Current liabilities:
Accounts payable and other current liabilities	20	16
Short-term debt and current portion of long-term debt	0	0
Total current liabilities	20	16
Long-term debt	0	0
Operating Lease, Liability, Noncurrent	0
Other non-current liabilities	40	41
Due to Related Parties, Noncurrent	0	0
Total liabilities exclusive of liabilities under vehicle programs	60	57
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	656	414
Total liabilities and stockholders’ equity	716	471
Subsidiary Issuers
Current assets:
Cash and cash equivalents	12	12
Receivables, net	0	0
Other current assets	115	112
Total current assets	127	124
Property and equipment, net	234	199
Operating Lease, Right-of-Use Asset	778
Deferred income taxes	1,238	1,015
Goodwill	0	0
Other intangibles, net	24	26
Other non-current assets	32	39
Intercompany receivables (payables)	427	404
Investment in subsidiaries	5,070	4,786
Total assets exclusive of assets under vehicle programs	7,930	6,593
Assets under vehicle programs:
Program cash	0	0
Vehicles, net	191	55
Receivables from vehicle manufacturers and other	4	2
Investment in Avis Budget Rental Car Funding (AESOP) LLC—related party	0	0
Assets under vehicle programs	195	57
Total assets	8,125	6,650
Current liabilities:
Accounts payable and other current liabilities	338	246
Short-term debt and current portion of long-term debt	17	18
Total current liabilities	355	264
Long-term debt	2,417	2,501
Operating Lease, Liability, Noncurrent	698
Other non-current liabilities	99	87
Due to Related Parties, Noncurrent	3,913	3,524
Total liabilities exclusive of liabilities under vehicle programs	7,482	6,376
Liabilities under vehicle programs:
Debt	160	28
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	160	28
Total stockholders’ equity	483	246
Total liabilities and stockholders’ equity	8,125	6,650
Guarantor Subsidiaries
Current assets:
Cash and cash equivalents	0	1
Receivables, net	262	239
Other current assets	95	116
Total current assets	357	356
Property and equipment, net	338	319
Operating Lease, Right-of-Use Asset	1,174
Deferred income taxes	222	207
Goodwill	471	471
Other intangibles, net	481	475
Other non-current assets	15	16
Intercompany receivables (payables)	2,715	2,104
Investment in subsidiaries	3,778	3,852
Total assets exclusive of assets under vehicle programs	9,551	7,800
Assets under vehicle programs:
Program cash	0	0
Vehicles, net	54	54
Receivables from vehicle manufacturers and other	99	0
Investment in Avis Budget Rental Car Funding (AESOP) LLC—related party	0	0
Assets under vehicle programs	153	54
Total assets	9,704	7,854
Current liabilities:
Accounts payable and other current liabilities	867	582
Short-term debt and current portion of long-term debt	2	3
Total current liabilities	869	585
Long-term debt	1	3
Operating Lease, Liability, Noncurrent	971
Other non-current liabilities	215	257
Due to Related Parties, Noncurrent	427	404
Total liabilities exclusive of liabilities under vehicle programs	2,483	1,249
Liabilities under vehicle programs:
Debt	38	49
Due to Avis Budget Rental Car Funding (AESOP) LLC-related party	0	0
Deferred Income Taxes	2,014	1,770
Other	99	0
Total Liabilities under vehicle programs	2,151	1,819
Total stockholders’ equity	5,070	4,786
Total liabilities and stockholders’ equity	9,704	7,854
Non-Guarantor Subsidiaries
Current assets:
Cash and cash equivalents	673	601
Receivables, net	649	716
Other current assets	338	371
Total current assets	1,660	1,688
Property and equipment, net	220	218
Operating Lease, Right-of-Use Asset	644
Deferred income taxes	189	66
Goodwill	630	621
Other intangibles, net	293	324
Other non-current assets	123	140
Intercompany receivables (payables)	1,028	1,262
Investment in subsidiaries	0	0
Total assets exclusive of assets under vehicle programs	4,787	4,319
Assets under vehicle programs:
Program cash	211	115
Vehicles, net	11,932	11,365
Receivables from vehicle manufacturers and other	675	629
Investment in Avis Budget Rental Car Funding (AESOP) LLC—related party	649	559
Assets under vehicle programs	13,467	12,668
Total assets	18,254	16,987
Current liabilities:
Accounts payable and other current liabilities	981	849
Short-term debt and current portion of long-term debt	0	2
Total current liabilities	981	851
Long-term debt	998	1,024
Operating Lease, Liability, Noncurrent	471
Other non-current liabilities	403	382
Due to Related Parties, Noncurrent	2	1
Total liabilities exclusive of liabilities under vehicle programs	2,855	2,258
Liabilities under vehicle programs:
Debt	2,934	2,797
Due to Avis Budget Rental Car Funding (AESOP) LLC-related party	7,936	7,358
Deferred Income Taxes	175	191
Other	576	531
Total Liabilities under vehicle programs	11,621	10,877
Total stockholders’ equity	3,778	3,852
Total liabilities and stockholders’ equity	18,254	16,987
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
Operating Lease, Right-of-Use Asset	0
Deferred income taxes	0	0
Goodwill	0	0
Other intangibles, net	0	0
Other non-current assets	0	0
Intercompany receivables (payables)	(4,342)	(3,929)
Investment in subsidiaries	(9,331)	(8,884)
Total assets exclusive of assets under vehicle programs	(13,673)	(12,813)
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	(13,673)	(12,813)
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
Operating Lease, Liability, Noncurrent	0
Other non-current liabilities	0	0
Due to Related Parties, Noncurrent	(4,342)	(3,929)
Total liabilities exclusive of liabilities under vehicle programs	(4,342)	(3,929)
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	(9,331)	(8,884)
Total liabilities and stockholders’ equity	$ (13,673)	$ (12,813)