XML 17 R68.htm IDEA: XBRL DOCUMENT v3.19.3
Derivative Instruments - Summary of Effects of Cash Flow Hedges on Consolidated Statements of Operations (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]        
Gains (losses) recognized in accumulated OCI $ (13)   $ (66)  
Interest expense        
Derivative Instruments, Gain (Loss) [Line Items]        
Gains (losses) reclassified from accumulated OCI (1)   (2)  
Gain on derivatives        
Derivative Instruments, Gain (Loss) [Line Items]        
Gains (losses) reclassified from accumulated OCI $ 0   $ 0  
Cash Flow Hedging        
Derivative Instruments, Gain (Loss) [Line Items]        
Gains (losses) recognized in accumulated OCI   $ 14   $ 22
Cash Flow Hedging | Interest expense        
Derivative Instruments, Gain (Loss) [Line Items]        
Derivative instruments, gain (loss) reclassified from accumulated OCI into income, effective portion, net   (1)   (4)
Gain recognized in interest expense   0   1
Cash Flow Hedging | Gain on derivatives        
Derivative Instruments, Gain (Loss) [Line Items]        
Derivative instruments, gain (loss) reclassified from accumulated OCI into income, effective portion, net   $ 0   $ 2