Income Taxes Loss Carryforwards (Details) $ in Millions	12 Months Ended
	Dec. 31, 2018 USD ($)
Operating Loss Carryforwards [Line Items]
Undistributed Earnings of Foreign Subsidiaries	$ 14,400
Federal and State [Member] | Minimum [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2019
Federal and State [Member] | Maximum [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2038
Federal [Member]
Operating Loss Carryforwards [Line Items]
Net Operating Loss Carryforwards	$ 412
State [Member]
Operating Loss Carryforwards [Line Items]
Net Operating Loss Carryforwards	1,690
Non- U.S. [Member]
Operating Loss Carryforwards [Line Items]
Net Operating Loss Carryforwards	4,410
Portion of Non- U.S. with expiration dates [Member]
Operating Loss Carryforwards [Line Items]
Net Operating Loss Carryforwards	$ 2,150
Portion of Non- U.S. with expiration dates [Member] | Minimum [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2019
Portion of Non- U.S. with expiration dates [Member] | Maximum [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2038