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Fair Value - Schedule of Carrying Values and Estimated Fair Values for Financial Instruments (Details) - USD ($) $ in Millions | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Financial Assets |  |
Investment securities held to maturity | $ 10,074 | $ 3,809
Investment in marketable equity securities | 100 | 98
Fair value of derivative financial instruments | 110 | 0
Financial Liabilities |  |
Fair value of derivative financial instruments | 204 | 0
Reported Value Measurement |  |
Financial Assets |  |
Cash and due from banks | 523 | 338
Interest-earning deposits at banks | 9,285 | 9,115
Investment securities available for sale | 9,295 | 9,203
Investment securities held to maturity | 10,074 | 3,809
Investment in marketable equity securities | 100 | 98
Loans held for sale | 81 | 99
Net loans | 62,489 | 32,193
Income earned not collected | 247 | 134
Federal Home Loan Bank stock | 39 | 40
Mortgage and other servicing rights | 28 | 23
Fair value of derivative financial instruments | 110 |
Financial Liabilities |  |
Deposits | 91,597 |
Securities sold under customer repurchase agreements | 616 | 589
Long-term borrowings | 2,672 | 1,195
Credit balances of factoring clients | 1,150 |
Accrued interest payable | 24 | 8
Fair value of derivative financial instruments | 204 |
Deposits with no stated maturity |  | 48,925
Time deposits |  | 2,481
Estimate of Fair Value Measurement |  |
Financial Assets |  |
Cash and due from banks | 523 | 338
Interest-earning deposits at banks | 9,285 | 9,115
Investment securities available for sale | 9,295 | 9,203
Investment securities held to maturity | 9,457 | 3,759
Investment in marketable equity securities | 100 | 98
Loans held for sale | 81 | 99
Net loans | 61,331 | 31,890
Income earned not collected | 247 | 134
Federal Home Loan Bank stock | 39 | 40
Mortgage and other servicing rights | 35 | 23
Fair value of derivative financial instruments | 110 |
Financial Liabilities |  |
Deposits | 91,572 |
Securities sold under customer repurchase agreements | 616 | 589
Long-term borrowings | 2,621 | 1,222
Credit balances of factoring clients | 1,150 |
Accrued interest payable | 24 | 8
Fair value of derivative financial instruments | 204 |
Deposits with no stated maturity |  | 48,925
Time deposits |  | 2,471
Estimate of Fair Value Measurement | Level 1 |  |
Financial Assets |  |
Cash and due from banks | 523 | 338
Interest-earning deposits at banks | 9,285 | 9,115
Investment securities available for sale | 0 | 0
Investment securities held to maturity | 0 | 0
Investment in marketable equity securities | 33 | 34
Loans held for sale | 0 | 0
Net loans | 0 | 0
Income earned not collected | 0 | 0
Federal Home Loan Bank stock | 0 | 0
Mortgage and other servicing rights | 0 | 0
Fair value of derivative financial instruments | 0 |
Financial Liabilities |  |
Deposits | 0 |
Securities sold under customer repurchase agreements | 0 | 0
Long-term borrowings | 0 | 0
Credit balances of factoring clients | 0 |
Accrued interest payable | 0 | 0
Fair value of derivative financial instruments | 0 |
Deposits with no stated maturity |  | 0
Time deposits |  | 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 securities available for sale | 9,109 | 8,996
Investment securities held to maturity | 9,457 | 3,759
Investment in marketable equity securities | 67 | 64
Loans held for sale | 65 | 99
Net loans | 1,574 | 0
Income earned not collected | 247 | 134
Federal Home Loan Bank stock | 39 | 40
Mortgage and other servicing rights | 0 | 0
Fair value of derivative financial instruments | 109 |
Financial Liabilities |  |
Deposits | 91,572 |
Securities sold under customer repurchase agreements | 616 | 589
Long-term borrowings | 2,606 | 1,222
Credit balances of factoring clients | 0 |
Accrued interest payable | 24 | 8
Fair value of derivative financial instruments | 203 |
Deposits with no stated maturity |  | 48,925
Time deposits |  | 2,471
Estimate of Fair Value Measurement | Level 3 |  |
Financial Assets |  |
Cash and due from banks | 0 | 0
Interest-earning deposits at banks | 0 | 0
Investment securities available for sale | 186 | 207
Investment securities held to maturity | 0 | 0
Investment in marketable equity securities | 0 | 0
Loans held for sale | 16 | 0
Net loans | 59,757 | 31,890
Income earned not collected | 0 | 0
Federal Home Loan Bank stock | 0 | 0
Mortgage and other servicing rights | 35 | 23
Fair value of derivative financial instruments | 1 |
Financial Liabilities |  |
Deposits | 0 |
Securities sold under customer repurchase agreements | 0 | 0
Long-term borrowings | 15 | 0
Credit balances of factoring clients | 1,150 |
Accrued interest payable | 0 | 0
Fair value of derivative financial instruments | $ 1 |
Deposits with no stated maturity |  | 0
Time deposits |  | $ 0

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- Definition Amount 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/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563 + Details
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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 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 http://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 http://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 http://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 http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
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