Variable Interest Entities - Additional Information (Details) $ in Millions	Jun. 30, 2021 USD ($) entity	Dec. 31, 2020 USD ($)
Investments In Variable Interest Entities [Abstract]
Number of consolidated entities | entity	3
Variable Interest Entity [Line Items]
Maximum exposure to loss in unconsolidated VIEs	$ 955	$ 859
Total assets	163,399	115,511
Consolidated
Variable Interest Entity [Line Items]
Maximum exposure to loss in unconsolidated VIEs	641
Total assets	655	438
Unconsolidated
Variable Interest Entity [Line Items]
Total assets	$ 955	$ 859