v3.19.2
Derivative Instruments (Details 2) (Details) - USD ($)
$ in Millions
Jun. 30, 2019
Dec. 31, 2018
Derivatives, Fair Value [Line Items]    
Derivative Asset [1] $ 415 $ 302
Derivative Liability [1] 284 443
Designated as Hedging Instrument [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Asset 2 40
Derivative Liability 27 10
Not Designated as Hedging Instrument [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Asset 413 262
Derivative Liability 257 433
Interest Rate Hedging Instruments    
Derivatives, Fair Value [Line Items]    
Derivative Asset 6 40
Derivative Liability 33 10
Interest Rate Hedging Instruments | Designated as Hedging Instrument [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Asset 2 40
Derivative Liability 27 10
Interest Rate Hedging Instruments | Not Designated as Hedging Instrument [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Asset 0 0
Derivative Liability 2 0
Energy Related Derivative [Member] | Not Designated as Hedging Instrument [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Asset 413 262
Derivative Liability $ 255 $ 433
[1] At June 30, 2019 and December 31, 2018, we had $142 million and $244 million, respectively, of collateral under master netting arrangements that were not offset against our derivative instruments on the Consolidated Condensed Balance Sheets primarily related to initial margin requirements.