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Investment Securities - Narrative (Details) $ in Millions	Mar. 31, 2024 USD ($)
Held-to-maturity Securities
Schedule of Held-to-maturity Securities [Line Items]
Securities loaned, fair value of collateral	$ 2,100.0
Debt Securities, Held-to-Maturity, Restricted	2,200.0
Available-for-sale Securities
Schedule of Held-to-maturity Securities [Line Items]
Securities loaned, fair value of collateral	$ 771.1

X

- Definition

Amount of restricted investment in debt security measured at amortized cost (held-to-maturity).

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Fair value of the securities pledged as collateral against securities loaned.

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