Long-term Debt -Summary of Long Term Debt (Details) - USD ($) $ in Millions	Sep. 30, 2025	Aug. 20, 2025	Dec. 31, 2024
Borrowings
Unamortized discount and debt issuance costs	$ (28.3)		$ (16.4)
Other	11.6		7.0
Total debt	2,883.3		1,890.6
Less: current portion of debt	4.5		3.2
Long-term debt	$ 2,878.8		1,887.4
5.55% Notes due 2040
Borrowings
Interest rate (as a percent)	5.55%	5.55%
Long-term debt, carrying amount	$ 500.0		0.0
5.55% Notes due 2040 | Significant Observable Inputs (Level 2)
Borrowings
Fair value of notes	$ 506.3		0.0
5.25% Notes due 2035
Borrowings
Interest rate (as a percent)	5.25%	5.25%
Long-term debt, carrying amount	$ 500.0		0.0
5.25% Notes due 2035 | Significant Observable Inputs (Level 2)
Borrowings
Fair value of notes	$ 506.6		0.0
2.20% Notes due 2032
Borrowings
Interest rate (as a percent)	2.20%
Long-term debt, carrying amount	$ 550.0		550.0
2.20% Notes due 2032 | Significant Observable Inputs (Level 2)
Borrowings
Fair value of notes	$ 475.8		448.7
2.75% Notes due 2030
Borrowings
Interest rate (as a percent)	2.75%
Long-term debt, carrying amount	$ 750.0		750.0
2.75% Notes due 2030 | Significant Observable Inputs (Level 2)
Borrowings
Fair value of notes	$ 702.1		672.2
3.75% Notes due 2027
Borrowings
Interest rate (as a percent)	3.75%
Long-term debt, carrying amount	$ 600.0		600.0
3.75% Notes due 2027 | Significant Observable Inputs (Level 2)
Borrowings
Fair value of notes	$ 595.4		$ 584.1