Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments - Fair Value of Derivative Assets and Liabilities (Details)

v3.20.2
Derivative Instruments - Fair Value of Derivative Assets and Liabilities (Details) - USD ($)
$ in Millions
Sep. 30, 2020
Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net $ (12) $ 24
Fair Value, Inputs, Level 1 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net (7) 3
Fair Value, Inputs, Level 2 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net (5) (3)
Fair Value, Inputs, Level 3 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net $ 0 $ 24