Long-Term Debt - Summary of Short-Term Borrowings and Long-Term Debt (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Long-term debt
Debt issuance costs, net	$ (15.6)	$ (16.6)
Long-term Debt, Total	2,205.8	2,204.6
Net long-term debt	2,205.8	2,204.6
3.15% Senior notes due August 1, 2027
Long-term debt
Senior notes	425.0	425.0
Less: Discount	(0.1)	(0.1)
2.3% Senior notes due December 15, 2031
Long-term debt
Senior notes	400.0	400.0
Less: Discount	(0.5)	(0.6)
5.6% Senior notes due November 15, 2032
Long-term debt
Senior notes	500.0	500.0
Less: Discount	(0.7)	(0.8)
3.95% Senior notes due August 1, 2047
Long-term debt
Senior notes	400.0	400.0
Less: Discount	(2.2)	(2.2)
5.00% Senior notes due June 15, 2052
Long-term debt
Senior notes	500.0	500.0
Less: Discount	$ (0.1)	$ (0.1)

Amount, after accumulated amortization, of debt discount.

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