Investments - Variable Interest Entity (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Variable Interest Entity
Total Assets	$ 25,930.5	$ 26,064.3
Total Liabilities	12,478.7	12,611.6
RMMC/RMBC
Variable Interest Entity
Total Assets	250.0	230.3
Total Liabilities	$ 22.6	$ 29.8

Amount of asset recognized for present right to economic benefit.

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+ Details

- Definition

Amount of liability recognized for present obligation requiring transfer or otherwise providing economic benefit to others.

+ References

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+ Details

- Definition

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.

+ References + Details