Stockholders' Equity (Schedule of Components of Other Comprehensive Income (Loss), Net) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Stockholders' Equity Note [Abstract]
Unrealized gain (loss) on marketable securities, gross amount	$ 1	[1]	$ 0		$ 1	[2]	$ 0
Unrealized gain (loss) on marketable securities, income tax (provision) benefit	0		0		0		0
Unrealized gain (loss) on marketable securities, net amount	1		0		1		0
Foreign currency translation, gross amount	44		28		41		4
Foreign currency translation, income tax (provision) benefit	(2)		0		(4)		0
Foreign currency translation, net amount	42		28		37		4
Gain (loss) on interest rate swaps, gross amount	2	[3]	(2)		7		(1)
Gain (loss) on interest rate swaps, income tax (provision) benefit	(1)		0		(3)		0
Gain (loss) on interest rate swaps, net amount	1		(2)		4		(1)
Pension and postretirement benefits, gross amount	0		1	[4]	0		0	[4],[5]
Pension and postretirement benefits, income tax (provision) benefit	0		(1)	[4]	0		(6)	[4]
Pension and postretirement benefits, net amount	0		0	[4]	0		(6)	[4]
Total other comprehensive income (loss), gross amount	47		27	[4]	49		3	[4]
Total other comprehensive income (loss), income tax (provision) benefit	(3)		(1)	[4]	(7)		(6)	[4]
Total other comprehensive income (loss), net of tax	44		26	[4]	42		(3)	[4]
Other Comprehensive Income (Loss) on Marketable Securities, Net of Tax Portion Attributable To Equity Method Investee	1				1
Other Comprehensive Income (Loss), Net of Tax Portion Attributable To Equity Method Investee					$ (1)		$ (2)

[1] Amount includes $1 million of unrealized gains related to the Company's equity method investments' marketable securities.

[2] Amount includes $1 million of unrealized gains related to the Company's equity method investments' marketable securities

[3] Amount includes $1 million of gains associated with the Company's equity method investments' derivative activity

[4] As Adjusted (Note 1)

[5] Amount includes amortization of actuarial losses of $2 million related to the Company's equity method investments' pension plans