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Amounts Related to Cumulative Basis Adjustments for Fair Value Hedges (Detail) - USD ($) $ in Millions | Jun. 30, 2023 | Dec. 31, 2022
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Derivative Instruments and Hedging Activities Disclosure [Abstract] |  |
Carrying amount of the hedged liabilities | $ 123.5 | $ 319.8
Cumulative basis adjustment included in the carrying amount | $ 11.0 | $ 27.7

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- Definition Cumulative basis adjustment included in the carrying amount. + References No definition available. + Details
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Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
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- Definition Amount of liability hedged in fair value hedging relationship. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4EE -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4EE + Details
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