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Derivative Financial Instruments - Schedule of Cumulative Basis Adjustments for Fair Value Hedges (Parenthetical) (Details) $ in Millions	Mar. 31, 2021 USD ($)
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Amortized cost basis of closed portfolios used in hedging relationships	$ 45.3
Cumulative basis adjustments associated with hedging relationships	0.6
Designated hedged items	$ 20.0

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- Definition

Amortized cost basis of closed portfolios used in hedging relationships.

+ References

No definition available.

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- Definition

Cumulative basis adjustments associated with hedging relationships.

+ References

No definition available.

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- Definition

Amount of hedged item in hedging relationship. Excludes hedged asset or liability.

+ References

No definition available.

+ Details

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- References

No definition available.

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