Commitments to originate real estate loans for sale.

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Commitments to sell real estate loans net.

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Interest rate and foreign exchange contracts not designated as hedging instruments

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Interest rate swap agreements used for interest rate risk management.

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Amount before allowance of consumer installment revolving and home equity loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts.

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Other credit-related commitments.

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Other financial instruments.

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Amount of domestic interest-bearing checking and savings accounts, which may include money market accounts, NOW accounts, interest-bearing corporate checking accounts, brokered deposits and other savings accounts.

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Interest, dividends, rents, ancillary and other revenues earned but not yet received by the entity on its investments.

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Amount after offset of short term borrowing where a bank borrows, at the federal funds rate, from another bank and securities that an entity sells and agrees to repurchase at a specified date for a specified price.

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The amount outstanding of funds lent to other depository institutions, securities brokers, or securities dealers in the form of Federal Funds sold; for example, immediately available funds lent under agreements or contracts that mature in one business day or roll over under a continuing contract, regardless of the nature of the transaction or the collateral involved, excluding overnight lending for commercial and industrial purposes. Also include Federal Funds sold under agreements to resell on a gross basis, excluding (1) sales of term Federal Funds, (2) due bills representing purchases of securities or other assets by the reporting bank that have not yet been delivered and similar instruments, (3) resale agreements that mature in more than one business day involving assets other than securities, and (4) yield maintenance dollar repurchase agreements.

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For banks and other depository institutions (including Federal Reserve Banks, if applicable): Interest-bearing deposits in other financial institutions for relatively short periods of time including, for example, certificates of deposits, which are presented separately from cash on the balance sheet.

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Amount of interest payable on debt, including, but not limited to, trade payables.

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

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Amount of domestic noninterest-bearing deposits held by the entity, which may include demand deposits, checking, brokered and retail deposits.

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Amount of time deposit liabilities, including certificates of deposit.

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Fair Value Measurements - Carrying Amounts and Estimated Fair Value for Financial Instrument Assets (Liabilities) (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Financial assets:
Interest-bearing deposits at banks	$ 24,958,719	$ 41,872,304
Federal funds sold	3,000
Investment securities	25,210,871	7,155,860
Loans and leases:
Loans and leases	132,074,156	93,136,678
Allowance for credit losses	(1,925,331)	(1,469,226)	$ (1,736,387)	$ (1,051,071)
Loans and leases, net	129,638,832	91,443,226
Financial liabilities:
Noninterest-bearing deposits	(65,501,860)	(60,131,480)
Savings and interest-checking deposits	(87,911,463)	(68,603,966)
Time deposits	(10,101,545)	(2,807,963)
Long-term borrowings	(3,964,537)	(3,485,369)
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets:
Cash and cash equivalents	1,371,688	1,205,269
Trading account	117,847	49,545
Investment securities	145,289	68,850
Significant Observable Inputs (Level 2) [Member]
Financial assets:
Cash and cash equivalents	145,556	132,308
Interest-bearing deposits at banks	24,958,719	41,872,304
Federal funds sold	3,000
Trading account		200
Investment securities	23,860,445	7,066,293
Loans and leases:
Loans and leases	7,049,540
Loans and leases, net	7,180,192	4,949,028
Accrued interest receivable	646,250	335,162
Financial liabilities:
Noninterest-bearing deposits	(65,501,860)	(60,131,480)
Savings and interest-checking deposits	87,911,463	(68,603,966)
Time deposits	(10,143,110)	(2,810,143)
Short-term borrowings	(3,554,951)	(47,046)
Long-term borrowings	(3,926,489)	(3,562,223)
Accrued interest payable	(81,356)	(40,866)
Other financial instruments:
Commitments to sell real estate loans	54,424	7,525
Interest rate swap agreements used for interest rate risk management	(7,892)	(207)
Interest rate and foreign exchange contracts not designated as hedging instruments	(920,316)	334,852
Significant Unobservable Inputs (Level 3) [Member]
Financial assets:
Investment securities	50,588	57,333
Loans and leases:
Consumer loans	20,093,523	18,121,363
Loans and leases, net	119,048,176	87,348,549
Other financial instruments:
Commitments to originate real estate loans for sale	45,573	6,440
Other credit-related commitments	(148,772)	(123,032)
Carrying Amount [Member]
Financial assets:
Cash and cash equivalents	1,517,244	1,337,577
Interest-bearing deposits at banks	24,958,719	41,872,304
Federal funds sold	3,000
Trading account	117,847	49,745
Investment securities	25,210,871	7,155,860
Loans and leases:
Consumer loans	20,593,079	17,974,953
Allowance for credit losses	(1,925,331)	(1,469,226)
Loans and leases, net	129,638,832	91,443,226
Accrued interest receivable	646,250	335,162
Financial liabilities:
Noninterest-bearing deposits	(65,501,860)	(60,131,480)
Savings and interest-checking deposits	87,911,463	(68,603,966)
Time deposits	(10,101,545)	(2,807,963)
Short-term borrowings	(3,554,951)	(47,046)
Long-term borrowings	(3,964,537)	(3,485,369)
Accrued interest payable	(81,356)	(40,866)
Other financial instruments:
Commitments to originate real estate loans for sale	(45,573)	6,440
Commitments to sell real estate loans	54,424	7,525
Other credit-related commitments	(148,772)	(123,032)
Interest rate swap agreements used for interest rate risk management	(7,892)	(207)
Interest rate and foreign exchange contracts not designated as hedging instruments	(920,316)	334,852
Cumulative Amount of Fair Value Hedging Adjustment Increasing (Decreasing) the Carrying Amount [Member]
Financial assets:
Cash and cash equivalents	1,517,244	1,337,577
Interest-bearing deposits at banks	24,958,719	41,872,304
Federal funds sold	3,000
Trading account	117,847	49,745
Investment securities	24,056,322	7,192,476
Loans and leases:
Consumer loans	20,093,523	18,121,363
Loans and leases, net	126,228,368	92,297,577
Accrued interest receivable	646,250	335,162
Financial liabilities:
Noninterest-bearing deposits	(65,501,860)	(60,131,480)
Savings and interest-checking deposits	87,911,463	(68,603,966)
Time deposits	(10,143,110)	(2,810,143)
Short-term borrowings	(3,554,951)	(47,046)
Long-term borrowings	(3,926,489)	(3,562,223)
Accrued interest payable	(81,356)	(40,866)
Other financial instruments:
Commitments to originate real estate loans for sale	(45,573)	6,440
Commitments to sell real estate loans	54,424	7,525
Other credit-related commitments	(148,772)	(123,032)
Interest rate swap agreements used for interest rate risk management	(7,892)	(207)
Interest rate and foreign exchange contracts not designated as hedging instruments	(920,316)	334,852
Commercial Loans and Leases [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Loans and leases:
Loans and leases	41,139,985	23,285,224
Commercial Loans and Leases [Member] \| Carrying Amount [Member]
Loans and leases:
Loans and leases	41,850,566	23,473,324
Commercial Loans and Leases [Member] \| Cumulative Amount of Fair Value Hedging Adjustment Increasing (Decreasing) the Carrying Amount [Member]
Loans and leases:
Loans and leases	41,139,985	23,285,224
Commercial [Member] \| Significant Observable Inputs (Level 2) [Member]
Loans and leases:
Loans and leases	130,652	425,010
Commercial [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Loans and leases:
Loans and leases	43,083,994	34,305,181
Commercial [Member] \| Carrying Amount [Member]
Loans and leases:
Loans and leases	45,364,571	35,389,730
Commercial [Member] \| Cumulative Amount of Fair Value Hedging Adjustment Increasing (Decreasing) the Carrying Amount [Member]
Loans and leases:
Loans and leases	43,214,646	34,730,191
Residential Real Estate Loans \| Significant Observable Inputs (Level 2) [Member]
Loans and leases:
Loans and leases		4,524,018
Residential Real Estate Loans \| Significant Unobservable Inputs (Level 3) [Member]
Loans and leases:
Loans and leases	14,730,674	11,636,781
Residential Real Estate Loans \| Carrying Amount [Member]
Loans and leases:
Loans and leases	23,755,947	16,074,445
Residential Real Estate Loans \| Cumulative Amount of Fair Value Hedging Adjustment Increasing (Decreasing) the Carrying Amount [Member]
Loans and leases:
Loans and leases	$ 21,780,214	$ 16,160,799