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- Definition

Subordinated Debt And Long-Term Federal Home Loan Bank Advances

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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Contractual interest rate for funds borrowed, under the debt agreement.

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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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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Including both current and noncurrent portions, Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer.

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Amount of cumulative increase (decrease) in fair value of hedged liability in fair value hedge, attributable to hedged risk. Excludes cumulative basis adjustment related to foreign exchange risk.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of subordinated debt (with initial maturities beyond one year or beyond the operating cycle if longer). Subordinated debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets.

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Senior Notes and Long-Term Debt - Long-Term Debt (Detail) - USD ($) $ in Millions		12 Months Ended
	Nov. 19, 2025	Dec. 31, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Corporation-Subordinated Debt		$ 2,084.4	$ 2,081.3
Federal Home Loan Bank (FHLB) Advances		1,400.0	2,000.0
Long-Term Debt		3,484.4	4,081.3
Long-Term Debt Qualifying as Risk-Based Capital		$ 2,097.3	1,347.1
Redemption price, percentage		100.00%
Fair value hedge net decrease		$ (151.4)	(238.0)
Fixed Rate Notes due October 2025
Debt Instrument [Line Items]
Interest rate		3.95%
Corporation-Subordinated Debt		$ 0.0	736.0
Fixed-to-Floating Rate Notes due May 2032
Debt Instrument [Line Items]
Interest rate		3.375%
Corporation-Subordinated Debt		$ 349.9	349.8
Debt instrument, basis spread on variable rate		1.131%
Fixed Rate Notes due November 2032
Debt Instrument [Line Items]
Interest rate		6.125%
Corporation-Subordinated Debt		$ 996.0	995.5
Fixed-to-Fixed Rate Note due November 2040
Debt Instrument [Line Items]
Interest rate	5.117%	5.117%
Corporation-Subordinated Debt		$ 738.5	0.0
Debt instrument, basis spread on variable rate	1.05%
Redemption price, percentage	100.00%
Fair value hedge net decrease		$ (9.2)
FHLB Fixed Rate Advance due December 2025
Debt Instrument [Line Items]
Interest rate		5.13%
Federal Home Loan Bank (FHLB) Advances		$ 0.0	30.0
FHLB Fixed Rate Advance due December 2025
Debt Instrument [Line Items]
Interest rate		5.18%
Federal Home Loan Bank (FHLB) Advances		$ 0.0	570.0
FHLB Fixed Rate Advance due March 2026
Debt Instrument [Line Items]
Interest rate		5.13%
Federal Home Loan Bank (FHLB) Advances		$ 600.0	600.0
FHLB Fixed Rate Advance due June 2026
Debt Instrument [Line Items]
Interest rate		5.09%
Federal Home Loan Bank (FHLB) Advances		$ 800.0	$ 800.0