SECURITIZATIONS AND VARIABLE INTEREST ENTITIES - Asset Based Financing (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Variable Interest Entity
Total unconsolidated VIE assets	$ 425,355	$ 390,651
Maximum exposure to unconsolidated VIEs	56,125	55,976
Asset-based financing
Variable Interest Entity
Total unconsolidated VIE assets	214,205	190,589
Maximum exposure to unconsolidated VIEs	35,854	34,431
Commercial and other real estate | Asset-based financing
Variable Interest Entity
Total unconsolidated VIE assets	34,570	31,377
Maximum exposure to unconsolidated VIEs	7,758	7,489
Corporate loans | Asset-based financing
Variable Interest Entity
Total unconsolidated VIE assets	12,022	7,088
Maximum exposure to unconsolidated VIEs	7,654	5,802
Other (including investment funds, airlines and shipping) | Asset-based financing
Variable Interest Entity
Total unconsolidated VIE assets	167,613	152,124
Maximum exposure to unconsolidated VIEs	$ 20,442	$ 21,140