Borrowings - FHLB and FRB Advances (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
FHLB advances	$ 500,000	$ 0
FHLB advances, interest rate	3.37%	0.00%
Total maximum borrowing capacity with the FHLB	$ 3,560,959	$ 2,973,635
Total maximum borrowing capacity with the FRB	2,557,704	183,052
Loans and leases receivable	12,607,742	9,018,298
Borrowings under PPPLF	365,000	775,000
Paycheck Protection Program Liquidity Facility, CARES Act \| Federal Reserve Bank Advances
Debt Instrument [Line Items]
Borrowings under PPPLF	0	0
FHLB Advance Due June 2027
Debt Instrument [Line Items]
FHLB advances	$ 250,000
FHLB advances, interest rate	3.30%
FHLB Advance Due June 2024
Debt Instrument [Line Items]
FHLB advances	$ 250,000
FHLB advances, interest rate	3.44%
Qualifying Assets Pledged As Collateral
Debt Instrument [Line Items]
Loans and leases receivable	$ 7,543,384	$ 3,594,339

Federal reserve bank maximum amount available.

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Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages.

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States the interest rate applicable to Federal Home Loan Bank advances outstanding as of the Balance Sheet date.

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Amount of maximum advances or credit lines available from the Federal Home Loan Bank (FHLB).

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Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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