Summary of Borrowed Funds (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Debt Outstanding [Line Items]
FHLB advances	$ 12,171,661	$ 13,053,661
Repurchase agreements	800,000	500,000
Total wholesale borrowings	12,971,661	13,553,661
Junior subordinated debentures	359,773	359,508
Subordinated notes	294,926	294,697
Total borrowed funds	$ 13,626,360	$ 14,207,866

Debt Outstanding [Line Items]

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- Definition

As of the balance sheet date, the sum of FHLB advances, repurchase agreements and fed funds purchased.

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No definition 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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Amount of short-term and long-term debt and lease obligation.

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Including the current and noncurrent portions, the carrying value of junior subordinated long-term debt owed to unconsolidated subsidiary trusts as of the balance sheet date. Such debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets and was initially scheduled to be repaid after one year or beyond the normal operating cycle if longer.

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Amount of long-term debt and lease obligation, classified as noncurrent.

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Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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