XML 61 R49.htm IDEA: XBRL DOCUMENT v3.19.2
Derivative Instruments and Hedging Activities (Fair Value Of Derivatives Designated As Hedging Instruments) (Details) - Designated As Hedging Instrument [Member] - USD ($)
$ in Millions
Jun. 30, 2019
Dec. 31, 2018
Derivative [Line Items]    
Interest Rate Derivative Assets, at Fair Value $ 3 $ 0
Interest Rate Derivative Liabilities, at Fair Value 46 20
Derivative Instruments in Hedges, Assets, at Fair Value 3 0
Derivative Instruments in Hedges, Liabilities, at Fair Value $ 46 $ 20