Accumulated Other Comprehensive Income (Loss), Before Tax

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- Definition

Debt Securities, Available-for-sale and Held-to-maturity, Number of Collateral Dependent Securities

+ References

No definition available.

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- Definition

Debt Securities, Available-for-sale and Held-to-maturity, Number of Securities Purchased with Credit Deterioration Since Origination

+ References

No definition available.

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- Definition

Debt Securities, Available-for-sale and Held-to-maturity, Number of Securities in Nonaccrual Status

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No definition available.

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- Definition

Debt Securities, Held-To-Maturity, Amortized Cost, Before Allowance For Credit Loss, Transfer, Amount

+ References

No definition available.

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- Definition

Impairment Loss on Investments

+ References

No definition available.

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- Definition

Percentage Of Total Debt Securities, Available For Sale

+ References

No definition available.

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- Definition

Represents the amount of stock other than Federal Home Loan Bank stock and Federal Reserve Bank stock.

+ References

No definition available.

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- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-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

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- Definition

Amount, excluding accrued interest, of increase (decrease) in allowance for credit loss 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
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- Definition

Amount, excluding accrued interest, of allowance for credit loss on investment in debt security measured at amortized cost (held-to-maturity).

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- Definition

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

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- Definition

Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

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- Definition

Federal Reserve Bank stock represents an equity interest in the Federal Reserve Bank. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

+ References

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- Definition

Amount of unrealized gain (loss) from transfer of investment in debt security measured at amortized cost (held-to-maturity), to investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and investment in debt security measured at fair value with change in fair value recognized in net income (trading).

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- Definition

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.

+ References

No definition available.

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- Definition

Sum of the carrying amounts as of the balance sheet date of all investments.

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Investment Securities - Narrative (Details)	3 Months Ended		12 Months Ended
Investment Securities - Narrative (Details)	Mar. 31, 2023 USD ($) investment_security	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($) investment_security	Dec. 31, 2021 USD ($)
Investment Securities
Net carrying amount of securities transferred from available-for-sale to held-to-maturity	$ 360,347,000	$ 618,678,000
Accumulated other comprehensive loss, net of tax	(262,729,000)		$ (265,247,000)
Investments held-to-maturity, allowance for credit losses	227,000	41,000	43,000	$ 22,000
Allowance for Credit Losses	0		0
Available-for-sale securities, provision for credit losses	$ 0		$ 0
Available-for-sale and held-to-maturity securities in nonaccrual status \| investment_security	0		0
Available-for-sale and held-to-maturity securities purchased with deterioration in credit quality \| investment_security	0		0
Available-for-sale and held-to-maturity collateral dependent \| investment_security	0		0
FHLB stock	$ 25,700,000		$ 27,700,000
FRB stock	74,900,000		74,800,000
Other stock	4,900,000		17,400,000
Impairment loss on investments in FHLB, FRB and other stock	0
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent
Investment Securities
Accumulated other comprehensive loss before tax amount	(253,000,000)		(303,700,000)
Accumulated other comprehensive loss, net of tax	(181,100,000)		(217,400,000)
AOCI, Accumulated Gain (Loss), Debt Securities Transferred To Held-To-Maturity, Available-For-Sale, Parent
Investment Securities
Accumulated other comprehensive loss before tax amount	(114,100,000)
Accumulated other comprehensive loss, net of tax	(81,600,000)
Public deposits, Other Borrowings, and Other Purposes \| Asset Pledged as Collateral
Investment Securities
Investments at carrying value	3,610,000,000		195,600,000
Federal Reserve Discount Window \| Asset Pledged as Collateral
Investment Securities
Investments at carrying value	1,530,000,000
Federal Reserves New Bank Term Funding Program \| Asset Pledged as Collateral
Investment Securities
Investments at carrying value	1,890,000,000
Mortgage-backed securities
Investment Securities
Securities transferred from available-for-sale to held-to-maturity	410,700,000	255,000,000
Net carrying amount of securities transferred from available-for-sale to held-to-maturity	360,300,000	238,800,000
Debt securities, held-to-maturity, transfer, unrealized loss	(50,400,000)	(16,200,000)
Investments held-to-maturity, allowance for credit losses	0		0
Municipal bonds
Investment Securities
Securities transferred from available-for-sale to held-to-maturity		386,800,000
Net carrying amount of securities transferred from available-for-sale to held-to-maturity		379,900,000
Debt securities, held-to-maturity, transfer, unrealized loss		$ (6,900,000)
Investments held-to-maturity, allowance for credit losses	$ 227,000		$ 43,000
U.S. Treasury, U.S. Government Agency, and U.S. Government-Sponsored Enterprise Securities
Investment Securities
Percentage of total debt securities, available for sale	50.00%