Unrecognized Tax Benefits (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012		Dec. 31, 2011
Income Taxes [Abstract]
Unrecognized tax benefit in non-current income taxes payable	$ 39	[1]	$ 169	[1]
Accrued interest payable on potential tax liabilities	$ 22	[2]	$ 21	[2]

[1] Pursuant to the agreements governing the Separation entered into in connection with the Separation (as defined below), the Company is entitled to indemnification for non-Avis Budget Car Rental tax contingencies for taxable periods prior to and including the Separation. As of December 31, 2012, $15 million of unrecognized tax benefits are non-Avis Budget Car Rental tax contingencies.

[2] The Company recognizes potential interest related to unrecognized tax benefits within interest expense related to corporate debt, net on the accompanying Consolidated Statements of Operations. Penalties incurred during the twelve months ended December 31, 2012, 2011 and 2010, were not significant and were recognized as a component of income taxes.