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Fair Value - Schedule of Carrying Values and Estimated Fair Values for Financial Instruments (Details) - USD ($) $ in Millions | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Financial Assets |  |
Investment in marketable equity securities | $ 85 | $ 95
Investment securities available for sale | 9,061 | 8,995
Investment securities held to maturity | 10,381 | 10,279
Interest rate & other derivative — non-qualifying hedges | 547 | 159
Financial Liabilities |  |
Fair value of derivative financial instruments | 791 | 486
Reported Value Measurement |  |
Financial Assets |  |
Cash and due from banks | 1,598 | 518
Interest earning deposits at banks | 38,522 | 5,025
Investment in marketable equity securities | 85 | 95
Investment securities available for sale | 9,061 | 8,995
Investment securities held to maturity | 10,381 | 10,279
Loans held for sale | 90 | 52
Net loans | 134,556 | 67,720
Accrued interest receivable | 772 | 329
Federal Home Loan Bank stock | 393 | 197
Mortgage and other servicing rights | 25 | 25
Interest rate & other derivative — non-qualifying hedges | 547 | 159
Financial Liabilities |  |
Deposits with no stated maturity | 126,922 |
Deposits with no stated maturity |  | 78,798
Time deposits | 13,128 | 10,610
Credit balances of factoring clients | 1,126 | 995
Securities sold under customer repurchase agreements | 509 | 436
Other short-term debt | 500 | 1,750
Long-term borrowings | 45,078 | 4,452
Accrued interest payable | 150 | 57
Fair value of derivative financial instruments | 791 | 486
Estimate of Fair Value Measurement |  |
Financial Assets |  |
Cash and due from banks | 1,598 | 518
Interest earning deposits at banks | 38,522 | 5,025
Investment in marketable equity securities | 85 | 95
Investment securities available for sale | 9,061 | 8,995
Investment securities held to maturity | 8,993 | 8,795
Loans held for sale | 90 | 49
Net loans | 132,148 | 64,312
Accrued interest receivable | 772 | 329
Federal Home Loan Bank stock | 393 | 197
Mortgage and other servicing rights | 45 | 47
Interest rate & other derivative — non-qualifying hedges | 547 | 159
Financial Liabilities |  |
Deposits with no stated maturity | 126,922 |
Deposits with no stated maturity |  | 78,798
Time deposits | 13,055 | 10,504
Credit balances of factoring clients | 1,126 | 995
Securities sold under customer repurchase agreements | 509 | 436
Other short-term debt | 500 | 1,750
Long-term borrowings | 45,048 | 4,330
Accrued interest payable | 150 | 57
Fair value of derivative financial instruments | 791 | 486
Estimate of Fair Value Measurement | Level 1 |  |
Financial Assets |  |
Cash and due from banks | 1,598 | 518
Interest earning deposits at banks | 38,522 | 5,025
Investment in marketable equity securities | 29 | 32
Investment securities available for sale | 0 | 0
Investment securities held to maturity | 0 | 0
Loans held for sale | 0 | 0
Net loans | 0 | 0
Accrued interest receivable | 0 | 0
Federal Home Loan Bank stock | 0 | 0
Mortgage and other servicing rights | 0 | 0
Interest rate & other derivative — non-qualifying hedges | 0 | 0
Financial Liabilities |  |
Deposits with no stated maturity | 0 |
Deposits with no stated maturity |  | 0
Time deposits | 0 | 0
Credit balances of factoring clients | 0 | 0
Securities sold under customer repurchase agreements | 0 | 0
Other short-term debt | 0 | 0
Long-term borrowings | 0 | 0
Accrued interest payable | 0 | 0
Fair value of derivative financial instruments | 0 | 0
Estimate of Fair Value Measurement | Level 2 |  |
Financial Assets |  |
Cash and due from banks | 0 | 0
Interest earning deposits at banks | 0 | 0
Investment in marketable equity securities | 56 | 63
Investment securities available for sale | 8,901 | 8,821
Investment securities held to maturity | 8,993 | 8,795
Loans held for sale | 9 | 4
Net loans | 1,576 | 1,679
Accrued interest receivable | 772 | 329
Federal Home Loan Bank stock | 393 | 197
Mortgage and other servicing rights | 0 | 0
Interest rate & other derivative — non-qualifying hedges | 546 | 159
Financial Liabilities |  |
Deposits with no stated maturity | 126,922 |
Deposits with no stated maturity |  | 78,798
Time deposits | 13,055 | 10,504
Credit balances of factoring clients | 0 | 0
Securities sold under customer repurchase agreements | 509 | 436
Other short-term debt | 500 | 1,750
Long-term borrowings | 45,048 | 4,312
Accrued interest payable | 150 | 57
Fair value of derivative financial instruments | 790 | 486
Estimate of Fair Value Measurement | Level 3 |  |
Financial Assets |  |
Cash and due from banks | 0 | 0
Interest earning deposits at banks | 0 | 0
Investment in marketable equity securities | 0 | 0
Investment securities available for sale | 160 | 174
Investment securities held to maturity | 0 | 0
Loans held for sale | 81 | 45
Net loans | 130,572 | 62,633
Accrued interest receivable | 0 | 0
Federal Home Loan Bank stock | 0 | 0
Mortgage and other servicing rights | 45 | 47
Interest rate & other derivative — non-qualifying hedges | 1 | 0
Financial Liabilities |  |
Deposits with no stated maturity | 0 |
Deposits with no stated maturity |  | 0
Time deposits | 0 | 0
Credit balances of factoring clients | 1,126 | 995
Securities sold under customer repurchase agreements | 0 | 0
Other short-term debt | 0 | 0
Long-term borrowings | 0 | 18
Accrued interest payable | 0 | 0
Fair value of derivative financial instruments | $ 1 | $ 0

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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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- Definition Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
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- Definition Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits. + References No definition available. + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 22 -URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226052-175313 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
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- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 1A -URI https://asc.fasb.org/extlink&oid=123594786&loc=SL75136599-209740 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(2)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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