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Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments in unconsolidated subsidiaries, fair value	$ 326.8		$ 352.3
Asset impairments	0.0	$ 0.0
Total long-term debt	3,311.0		2,824.0
5.500% Senior Notes | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total long-term debt	$ 496.0		0.0
Interest rate	5.50%
4.875% Senior Notes | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total long-term debt	$ 599.0		599.0
Interest rate	4.875%
2.500% Senior Notes | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total long-term debt	$ 494.0		494.0
Interest rate	2.50%
5.950% Senior Notes | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate	5.95%
Estimated Fair Value | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total long-term debt	$ 715.0		746.0
Estimated Fair Value | 5.500% Senior Notes | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total long-term debt	503.0		0.0
Estimated Fair Value | 4.875% Senior Notes | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total long-term debt	594.0		600.0
Estimated Fair Value | 2.500% Senior Notes | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total long-term debt	414.0		424.0
Estimated Fair Value | 5.950% Senior Notes | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total long-term debt	1,025.0		1,049.0
Carrying Value | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total long-term debt	743.0		752.0
Carrying Value | 5.500% Senior Notes | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total long-term debt	495.0		0.0
Carrying Value | 4.875% Senior Notes | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total long-term debt	598.0		597.0
Carrying Value | 2.500% Senior Notes | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total long-term debt	491.0		490.0
Carrying Value | 2.500% Senior Notes | Mortgages
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total long-term debt	37.2		36.3
Carrying Value | 5.950% Senior Notes | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total long-term debt	974.0		974.0
Non-Marketable Equity Investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Capital investments	$ 142.8		$ 142.8

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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