Stockholders' Equity (Schedule of Components of Other Comprehensive Income (Loss), Net) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013		Jun. 30, 2014	Jun. 30, 2013
Stockholders' Equity Note [Abstract]
Unrealized gain (loss) on marketable securities, gross amount	$ 0	$ 0		$ 0	$ 0
Unrealized gain (loss) on marketable securities, income tax (provision) benefit	0	0		0	0
Unrealized gain (loss) on marketable securities, net amount	0	0		0	0
Foreign currency translation, gross amount	(12)	28		(15)	(3)
Foreign currency translation, income tax (provision) benefit	(10)	(2)		(2)	(2)
Foreign currency translation, net amount	(22)	26		(17)	(5)
Gain (loss) from cash flow hedges, gross amount	(3)	3	[1]	(3)	5	[1]
Gain (loss) from cash flow hedges, income tax (provision) benefit	0	(1)		(3)	(2)
Gain (loss) from cash flow hedges, net amount	(3)	2		(6)	3
Pension and postretirement benefits, gross amount	(22)	0	[2]	(41)	0	[2]
Pension and postretirement benefits, income tax (provision) benefit	8	0		15	0
Pension and postretirement benefits, net amount	(14)	0		(26)	0
Total other comprehensive income (loss), gross amount	(37)	31		(59)	2
Total other comprehensive income (loss), income tax (provision) benefit	(2)	(3)		10	(4)
Total other comprehensive income (loss), net of tax	$ (39)	$ 28		$ (49)	$ (2)

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

[2] Amount includes amortization of actuarial gains of $1 million related to the Company's equity method investments' pension plans