XML 76 R65.htm IDEA: XBRL DOCUMENT v3.20.2
Derivative Instruments and Hedging Activities (Fair Values of Derivative Instruments on the Balance Sheet) (Parenthetical) (Details) - USD ($)
$ in Millions
Jun. 30, 2020
Dec. 31, 2019
Interest Rate Swap [Member] | Derivatives Not Designated as Hedging Instruments [Member]    
Derivatives, Fair Value [Line Items]    
Obligations secured with cash $ 24.6 $ 6.7