Fair Value Measurements - Schedule of Carrying Amounts and Estimated Fair Values, Financial Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2026	May 31, 2026	Dec. 31, 2025
Carrying Amount \| Other notes payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying amounts and estimated fair values of financial instruments	$ 80.0		$ 93.6
Estimated Fair Value \| Other notes payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying amounts and estimated fair values of financial instruments	$ 80.0		$ 93.6
4.50% Senior Notes due 2028 \| Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Effective interest rate (in percent)	4.50%	4.50%	4.50%
4.50% Senior Notes due 2028 \| Carrying Amount \| Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying amounts and estimated fair values of financial instruments	$ 397.4		$ 792.0
4.50% Senior Notes due 2028 \| Estimated Fair Value \| Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying amounts and estimated fair values of financial instruments	$ 394.0		$ 799.6
4.75% Senior Notes due 2030 \| Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Effective interest rate (in percent)	4.75%		4.75%
4.75% Senior Notes due 2030 \| Carrying Amount \| Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying amounts and estimated fair values of financial instruments	$ 789.2		$ 787.0
4.75% Senior Notes due 2030 \| Estimated Fair Value \| Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying amounts and estimated fair values of financial instruments	$ 765.6		$ 796.6
4.625% Senior Notes due 2031 \| Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Effective interest rate (in percent)	4.625%		4.625%
4.625% Senior Notes due 2031 \| Carrying Amount \| Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying amounts and estimated fair values of financial instruments	$ 394.4		$ 393.6
4.625% Senior Notes due 2031 \| Estimated Fair Value \| Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying amounts and estimated fair values of financial instruments	$ 374.3		$ 392.7
5.875% Senior Notes due 2034 \| Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Effective interest rate (in percent)	5.875%	5.875%	5.875%
5.875% Senior Notes due 2034 \| Carrying Amount \| Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying amounts and estimated fair values of financial instruments	$ 588.2		$ 0.0
5.875% Senior Notes due 2034 \| Estimated Fair Value \| Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying amounts and estimated fair values of financial instruments	574.4		0.0
Advances under revolving credit facility \| Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying amounts and estimated fair values of financial instruments	75.0		130.0
Advances under revolving credit facility \| Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying amounts and estimated fair values of financial instruments	75.0		130.0
Letters of credit \| Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying amounts and estimated fair values of financial instruments	0.0		0.0
Letters of credit \| Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying amounts and estimated fair values of financial instruments	$ 53.6		$ 46.3