XML 138 R90.htm IDEA: XBRL DOCUMENT v3.21.2
Commitments and Contingencies - Derivative Instruments (Details)
$ in Millions
Jun. 30, 2021
USD ($)
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Derivative, Net Liability Position, Aggregate Fair Value $ 59
Collateral Already Posted, Aggregate Fair Value 58
Additional Collateral, Aggregate Fair Value $ 0