Debt and Credit Arrangements (Tables)

3 Months Ended

Mar. 31, 2025

Debt Disclosure [Abstract]

Summary of Carrying Amounts and Fair Values of Long-term Debt

A summary of the carrying amounts of our long-term debt is listed below.

	Effective Interest Rate	March 31, 2025		December 31, 2024
4.650% Senior Notes due 2028 (less unamortized discount and issuance costs of $0.6 and $1.6, respectively)	4.780%	$	497.8	$	497.6
4.750% Senior Notes due 2030 (less unamortized discount and issuance costs of $2.1 and $3.1, respectively)	4.920%	644.8		644.6
2.400% Senior Notes due 2031 (less unamortized discount and issuance costs of $0.5 and $2.8, respectively)	2.512%	496.7		496.6
5.375% Senior Notes due 2033 (less unamortized discount and issuance costs of $3.2 and $2.6, respectively)	5.650%	294.2		294.0
3.375% Senior Notes due 2041 (less unamortized discount and issuance costs of $0.9 and $4.6, respectively)	3.448%	494.5		494.4
5.400% Senior Notes due 2048 (less unamortized discount and issuance costs of $2.5 and $4.4, respectively)	5.480%	493.1		493.1
Other notes payable and finance leases		0.3		0.3
Total long-term debt		2,921.4		2,920.6
Less: current portion		0.1		0.1
Long-term debt, excluding current portion		$	2,921.3	$	2,920.5