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VARIABLE INTEREST ENTITIES - Schedule of Variable Interest Entities (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Variable Interest Entity [Line Items] |  |  |
Lending to special purpose entities included in loans and leases |  | $ 123,090 | $ 119,088
Investment in asset-backed securities included in HTM securities | [1] | 3,235 | 3,202
LIHTC Investments |  |  |
Variable Interest Entity [Line Items] |  |  |
LIHTC investment included in other assets |  | 1,687 | 1,401
LIHTC unfunded commitments included in other liabilities |  | 875 | 716
Renewable Energy |  |  |
Variable Interest Entity [Line Items] |  |  |
Renewable energy investments included in other assets |  | 403 | 355
Commercial and industrial | Special Purpose Entities |  |  |
Variable Interest Entity [Line Items] |  |  |
Lending to special purpose entities included in loans and leases |  | 1,295 | 1,101
Asset-backed securities |  |  |
Variable Interest Entity [Line Items] |  |  |
Investment in asset-backed securities included in HTM securities |  | 893 | 0
Asset-backed securities | Asset-backed securities |  |  |
Variable Interest Entity [Line Items] |  |  |
Investment in asset-backed securities included in HTM securities |  | $ 893 | $ 0
[1] | Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.

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