Income Taxes Reconciliation of Beginning and Ending Balances of Total Amounts of Gross Unrecognized Tax Benefits (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Unrecognized Tax Benefits	$ 53	$ 48	$ 128
Unrecognized Tax Benefits, Increase Resulting from Acquisition	71
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	0	1	0
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	(1)	(2)	(91)
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	12	9	11
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations	(3)	0	0
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities	(1)	(3)
Unrecognized Tax Benefits, Decrease Resulting from Foreign Currency Translation	(1)
Unrecognized Tax Benefits	$ 130	$ 53	$ 48