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Debt - Narrative (Details) $ in Millions	9 Months Ended
	Sep. 30, 2025 USD ($)	Aug. 05, 2025 USD ($)
Debt Instrument [Line Items]
Consolidated leverage ratio	3.50
Consolidated interest coverage ratio	3.00
Loss on sale of business	$ 47.7
Senior Notes
Debt Instrument [Line Items]
Long-term debt		$ 363.9
6.7% 2070 Senior Notes
Debt Instrument [Line Items]
Long-term debt		55.1
6.25% 2070 Senior Notes
Debt Instrument [Line Items]
Long-term debt		105.8
5.5% March 2070 Senior Notes
Debt Instrument [Line Items]
Long-term debt		98.5
5.5% 2070 Senior Notes
Debt Instrument [Line Items]
Long-term debt		104.5
Debt Exchange
Debt Instrument [Line Items]
Long-term debt		1,680.1
Debt Exchange | 6.7% 2070 Senior Notes
Debt Instrument [Line Items]
Long-term debt		$ 488.9
Interest rate		6.70%
Debt Exchange | 6.25% 2070 Senior Notes
Debt Instrument [Line Items]
Long-term debt		$ 394.2
Interest rate		6.25%
Debt Exchange | 5.5% March 2070 Senior Notes
Debt Instrument [Line Items]
Long-term debt		$ 401.5
Interest rate		5.50%
Debt Exchange | 5.5% 2070 Senior Notes
Debt Instrument [Line Items]
Long-term debt		$ 395.5
Interest rate		5.50%

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The minimum interest coverage ratio required according to the terms for borrowing under this debt instrument.

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