Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Unrecognized Tax Benefits [Roll Forward]
Balance of gross unrecognized tax benefits at the beginning of the fiscal year	$ 149.8	$ 127.2	$ 107.3
Gross increases related to prior period tax positions	0.3	3.4	0.0
Gross decreases related to prior period tax positions	(0.2)	(0.7)	0.0
Gross increases related to current period tax positions	20.7	21.1	20.3
Reductions due to lapse in statute of limitations	0.0	(1.2)	(0.4)
Reductions due to settlements with taxing authorities	(7.9)	0.0	0.0
Balance of gross unrecognized tax benefits at the end of the fiscal year	$ 162.7	$ 149.8	$ 127.2

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Amount of unrecognized tax benefits.

+ References

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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