Income Taxes (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Contingency [Line Items]
Operating Loss Carryforwards	$ 129
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	6	4	(20)
Undistributed Earnings of Foreign Subsidiaries	391
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	33	27
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	92
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	$ 39
Federal [Member]
Income Tax Contingency [Line Items]
Open Tax Year	2014
Federal [Member] | Earliest Tax Year [Member]
Income Tax Contingency [Line Items]
Net Operating Loss Carryforwards, Expiration Date	Jan. 01, 2021
Federal [Member] | Latest Tax Year [Member]
Income Tax Contingency [Line Items]
Net Operating Loss Carryforwards, Expiration Date	Dec. 31, 2034
State [Member] | Earliest Tax Year [Member]
Income Tax Contingency [Line Items]
Net Operating Loss Carryforwards, Expiration Date	Jan. 01, 2015
Open Tax Year	2007
State [Member] | Latest Tax Year [Member]
Income Tax Contingency [Line Items]
Net Operating Loss Carryforwards, Expiration Date	Dec. 31, 2034
Open Tax Year	2014