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Loans and Leases - Composition of Loan and Lease Portfolio (Parenthetical) (Details) - USD ($) $ in Millions | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Non-Covered Loans | [1] | $ 46,703 |  | $ 45,681 |
Other Assets |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Accrued interest receivable |  | 200 |  | 199 |
Lease Financing, Unearned Income |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Unearned income |  | 90 |  | 95 |
Non-Covered Loans |  | 1,663 |  | 1,770 |
Commercial and Industrial |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Non-Covered Loans | [3] | 3,863 | [2] | 4,006 | [4]
Commercial and Industrial | Other Loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Non-Covered Loans |  | 2,200 |  | 2,236 |
Commercial and Industrial | Specialty Finance Loans | Other Loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Non-Covered Loans |  | 3,300 |  | 3,500 |
Commercial and Industrial | Other Commercial and Industrial Loans | Other Loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Non-Covered Loans |  | $ 548 |  | $ 527 |
[1] | Excludes accrued interest receivable of $200 million and $199 million at March 31, 2022 and December 31, 2021, respectively, which is included in other assets in the Consolidated Statements of Condition.
[2] | Includes lease financing receivables, all of which were classified as Pass.
[3] | Includes specialty finance loans and leases of $3.3 billion and $3.5 billion, respectively, at March 31, 2022 and December 31, 2021, and other C&I loans of $548 million and $527 million, respectively, at March 31, 2022 and December 31, 2021.
[4] | Includes lease financing receivables, all of which were classified as Pass.

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- Definition Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=123392090&loc=d3e45377-112738 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5074-111524 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84159169&loc=d3e10152-111534 + Details
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