Acquisitions (Details 1) (USD $) In Millions, unless otherwise specified	Jan. 10, 2011 Carmenita Leasing Inc [Member] Fleet Management Solutions [Member] Person Vehicle	Jan. 28, 2011 The Scully Companies [Member] FMS/DCC [Member] Person Vehicle	Mar. 31, 2012 BIT Leasing Inc [Member] Fleet Management Solutions [Member] Vehicle Person
Summary of acquisitions
Number of full services lease and rental vehicles	190	2,100	490
Number of contractual customers acquired	60	200	130
Purchase price of acquisitions	$ 9	$ 91	$ 14

The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant