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Derivative Instruments (Details 2) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]      
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax $ (51) $ 19 $ (52)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax (20) (6) 2
Cash Flow Hedging [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months 6    
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax 16 1 1
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax $ (4) (5) 3
Interest Rate Swap [Member] | Cash Flow Hedging [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Derivative, Maturity Date Jul. 27, 2021    
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax $ (71) (3) 4
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net (17) (19) 2
Foreign Exchange Contract [Member] | Cash Flow Hedging [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax 20 22 (56)
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net $ (8) $ (20) $ 56
Maximum [Member] | Foreign Exchange Contract [Member] | Cash Flow Hedging [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Derivative, Maturity Date Jun. 12, 2020