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VARIABLE INTEREST ENTITIES - Schedule of Variable Interest Entities (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Variable Interest Entity [Line Items] |  |  |
Lending to special purpose entities included in loans and leases |  | $ 128,163 | $ 123,090
Investment in asset-backed securities included in HTM securities | [1] | 2,242 | 3,235
LIHTC Investments |  |  |
Variable Interest Entity [Line Items] |  |  |
LIHTC investment included in other assets |  | 1,978 | 1,687
LIHTC unfunded commitments included in other liabilities |  | 927 | 875
Renewable Energy |  |  |
Variable Interest Entity [Line Items] |  |  |
Renewable energy investments included in other assets |  | 429 | 403
Commercial and industrial | Special Purpose Entities |  |  |
Variable Interest Entity [Line Items] |  |  |
Lending to special purpose entities included in loans and leases |  | 2,646 | 1,295
Asset-Backed Securities |  |  |
Variable Interest Entity [Line Items] |  |  |
Investment in asset-backed securities included in HTM securities |  | 737 | 893
Asset-Backed Securities | Asset-Backed Securities |  |  |
Variable Interest Entity [Line Items] |  |  |
Investment in asset-backed securities included in HTM securities |  | $ 737 | $ 893
[1] | Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.

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- Definition Amount of investment in qualified affordable housing projects. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 740 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=116633289&loc=SL49122993-202985 + Details
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