Income Taxes Loss Carryforwards (Details) $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($)
Tax Credit Carryforward [Line Items]
Undistributed Earnings of Foreign Subsidiaries	$ 8,640
Federal Foreign [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	$ 379
Federal Foreign [Member] | Minimum [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Expiration Date	Dec. 31, 2017
Federal Foreign [Member] | Maximum [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Expiration Date	Dec. 31, 2025
Federal and State [Member] | Minimum [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2016
Federal and State [Member] | Maximum [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2035
Federal [Member]
Operating Loss Carryforwards [Line Items]
Net Operating Loss Carryforwards	$ 109
State [Member]
Operating Loss Carryforwards [Line Items]
Net Operating Loss Carryforwards	1,240
Non- U.S. [Member]
Operating Loss Carryforwards [Line Items]
Net Operating Loss Carryforwards	2,320
Portion of Non- U.S. with expiration dates [Member]
Operating Loss Carryforwards [Line Items]
Net Operating Loss Carryforwards	$ 319
Portion of Non- U.S. with expiration dates [Member] | Minimum [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2016
Portion of Non- U.S. with expiration dates [Member] | Maximum [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2035