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Variable Interest Entities and Securitizations - Carrying Amount of Consolidated and Unconsolidated VIEs (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Variable Interest Entity [Line Items] |  |
Maximum Exposure to Loss | $ 5,157 | $ 5,038
Carrying Amount of Assets | 432,381 | 421,602
Carrying Amount of Liabilities | 371,352 | 361,398
Consolidated |  |
Variable Interest Entity [Line Items] |  |
Carrying Amount of Assets | 26,458 | 26,619
Carrying Amount of Liabilities | 15,256 | 12,436
Unconsolidated |  |
Variable Interest Entity [Line Items] |  |
Carrying Amount of Assets | 5,157 | 5,038
Carrying Amount of Liabilities | 1,454 | 1,240
Affordable housing entities |  |
Variable Interest Entity [Line Items] |  |
Maximum Exposure to Loss | 4,774 | 4,602
VIE, nonconsolidated, carrying amount of assets included in certain investment structures | 2,200 | 2,300
VIE, nonconsolidated, carrying amount of liabilities included in certain investment structures | 568 | 596
Affordable housing entities | Consolidated |  |
Variable Interest Entity [Line Items] |  |
Carrying Amount of Assets | 263 | 242
Carrying Amount of Liabilities | 27 | 17
Affordable housing entities | Unconsolidated |  |
Variable Interest Entity [Line Items] |  |
Carrying Amount of Assets | 4,774 | 4,602
Carrying Amount of Liabilities | 1,454 | 1,240
Entities that provide capital to low-income and rural communities |  |
Variable Interest Entity [Line Items] |  |
Maximum Exposure to Loss | 0 | 0
Entities that provide capital to low-income and rural communities | Consolidated |  |
Variable Interest Entity [Line Items] |  |
Carrying Amount of Assets | 2,074 | 1,951
Carrying Amount of Liabilities | 26 | 26
Entities that provide capital to low-income and rural communities | Unconsolidated |  |
Variable Interest Entity [Line Items] |  |
Carrying Amount of Assets | 0 | 0
Carrying Amount of Liabilities | 0 | 0
Other |  |
Variable Interest Entity [Line Items] |  |
Maximum Exposure to Loss | 383 | 436
Other | Consolidated |  |
Variable Interest Entity [Line Items] |  |
Carrying Amount of Assets | 0 | 0
Carrying Amount of Liabilities | 0 | 0
Other | Unconsolidated |  |
Variable Interest Entity [Line Items] |  |
Carrying Amount of Assets | 383 | 436
Carrying Amount of Liabilities | 0 | 0
Total other VIEs |  |
Variable Interest Entity [Line Items] |  |
Maximum Exposure to Loss | 5,157 | 5,038
Total other VIEs | Consolidated |  |
Variable Interest Entity [Line Items] |  |
Carrying Amount of Assets | 2,337 | 2,193
Carrying Amount of Liabilities | 53 | 43
Total other VIEs | Unconsolidated |  |
Variable Interest Entity [Line Items] |  |
Carrying Amount of Assets | 5,157 | 5,038
Carrying Amount of Liabilities | 1,454 | 1,240
Credit card loan securitizations |  |
Variable Interest Entity [Line Items] |  |
Maximum Exposure to Loss | 0 | 0
Credit card loan securitizations | Consolidated |  |
Variable Interest Entity [Line Items] |  |
Carrying Amount of Assets | 21,569 | 22,066
Carrying Amount of Liabilities | 13,016 | 10,338
Credit card loan securitizations | Unconsolidated |  |
Variable Interest Entity [Line Items] |  |
Carrying Amount of Assets | 0 | 0
Carrying Amount of Liabilities | 0 | 0
Auto loan securitizations |  |
Variable Interest Entity [Line Items] |  |
Maximum Exposure to Loss | 0 | 0
Auto loan securitizations | Consolidated |  |
Variable Interest Entity [Line Items] |  |
Carrying Amount of Assets | 2,552 | 2,360
Carrying Amount of Liabilities | 2,187 | 2,055
Auto loan securitizations | Unconsolidated |  |
Variable Interest Entity [Line Items] |  |
Carrying Amount of Assets | 0 | 0
Carrying Amount of Liabilities | 0 | 0
Total securitization-related VIEs |  |
Variable Interest Entity [Line Items] |  |
Maximum Exposure to Loss | 0 | 0
Total securitization-related VIEs | Consolidated |  |
Variable Interest Entity [Line Items] |  |
Carrying Amount of Assets | 24,121 | 24,426
Carrying Amount of Liabilities | 15,203 | 12,393
Total securitization-related VIEs | Unconsolidated |  |
Variable Interest Entity [Line Items] |  |
Carrying Amount of Assets | 0 | 0
Carrying Amount of Liabilities | $ 0 | $ 0

X
- Definition In certain investment structures, we consolidate a VIE which in turn holds as its primary asset an investment in an unconsolidated VIE. This concept represents the carrying amount of assets related to these investment structures. + References No definition available. + Details
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