Debt Securities, Available-For-Sale And Held-To-Maturity, Accrued Interest, After Allowance For Credit Loss

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- Definition

Debt Securities, Available-for-sale, Transfer to Held to Maturity, Amount

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- Definition

Amount excluding accrued interest, of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of allowance for credit loss on investment in debt security measured at amortized cost (held-to-maturity) and investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Fair value of investment in debt security measured at amortized cost (held-to-maturity) and investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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- Definition

Amount of expense (reversal of expense) for expected credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), from change in present value of expected cash flows.

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- Definition

Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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Amount, after tax, of adjustment from accumulated other comprehensive income (loss) for amortization of gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) from transfer to investment in debt security measured at amortized cost (held-to-maturity).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The sum of the fair values, as of the date of each statement of financial position presented, of securities that are restricted as collateral for the payment of related debt obligations, primarily secured borrowings and repurchase agreements, and that are reclassified and separately reported in the statement of financial position because the transferee has the right by contract or custom to sell or re-pledge them.

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Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

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Securities (Narrative) (Details)	3 Months Ended		12 Months Ended
Securities (Narrative) (Details)	Mar. 31, 2022 USD ($) security	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($) security
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Fair value of debt securities	$ 9,545,399,000
Unrealized losses, net of tax, from transfer of AFS to HTM	$ 113,000,000
Number of available-for-sale debt securities in an unrealized loss position \| security	497		431
Available-for-sale debt securities, in gross unrealized loss position, credit impairment	$ 0		$ 0
AFS and HTM, accrued interest	28,500,000		33,100,000
Provision for credit losses	8,000,000	$ 0
AFS and HTM debt investment securities pledged as collateral, carrying values	625,900,000		803,900,000
Fair value of debt securities from AFS to HTM	3,010,000,000.00
Debt Securities, Available-for-Sale and Held-to-Maturity, Allowance for Credit Loss	0
Debt Securities, AFS, allowance for credit loss	0		$ 0
AFS debt securities
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Provision for credit losses	$ 0	$ 0
U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Number of available-for-sale debt securities in an unrealized loss position \| security	223		180
U.S. government-sponsored enterprises debt securities
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Number of available-for-sale debt securities in an unrealized loss position \| security			50
Corporate debt securities
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Number of available-for-sale debt securities in an unrealized loss position \| security	56		30
U.S. Treasury securities
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Number of available-for-sale debt securities in an unrealized loss position \| security			21
Non-agency mortgage-backed securities
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Number of available-for-sale debt securities in an unrealized loss position \| security	102