Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule Of Intangible Assets

Intangible assets consisted of:

	As of March 31, 2013						As of December 31, 2012
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Amortized Intangible Assets
License agreements	$	251	$	42	$	209	$	257	$	39	$	218
Customer relationships (a)	163		21		142		86		19		67
Other	2		1		1		2		1		1
	$	416	$	64	$	352	$	345	$	59	$	286
Unamortized Intangible Assets
Goodwill (a)	$	646					$	375
Trademarks (a)	$	558					$	445

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^(a)  The increases in carrying amounts primarily relate to the acquisition of Zipcar.