v3.19.3.a.u2
Variable Interest Entities (Schedule of Equity Method Investments) (Details) - Variable Interest Entity, Not Primary Beneficiary [Member] - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Schedule of Equity Method Investments [Line Items]    
Gross equity method investments $ 176 $ 122
Unfunded equity method commitments 72 49
Net funded equity method investments included in other assets $ 104 $ 73