Variable Interest Entities - Loans Sold to Third-Party Sponsored Securitization Entities (Details) - Nonconsolidated entities - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Summary of loan sale activities [Abstract]
Carrying value of loans sold	$ 81,153	$ 92,349	$ 44,609
Proceeds received from loan sales as cash	45	73	9
Proceeds from loan sales as securities	80,186	91,422	43,671
Total proceeds received from loan sales	80,231	91,495	43,680
Gains/(losses) on loan sales	$ 6	$ 499	$ (93)

Proceeds received from the sale of originated and purchased mortgage loans.

No definition available.

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- Definition

Securities proceeds received from the sale of originated and purchased mortgage loans.

+ References

No definition available.

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- Definition

Summary Of Loan Sale Activities.

+ References

No definition available.

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- Definition

The gains (losses) included in earnings that represent the difference between the sale price and the carrying value of loans made to finance real estate acquisitions. This element refers to the gain (loss) and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

+ References

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- Definition

Mortgage loan related to property sales in noncash investing and financing activities.

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- Definition

The cash inflow from sales of loans that are secured with real estate mortgages and are held with the intention to resell in the near future.

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