Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2023

Debt Disclosure [Abstract]

Schedule of Long-Term Debt

Long-term debt at December 31, 2023 and 2022 consisted of the following:

(in millions)	December 31, 2023			December 31, 2022
Current portion of long-term debt:
Current portion of 5-year term loan facility expires 2026	$	25.0		$	15.6
Current portion of 5-year term loan credit agreement    expired 2023		—			210.0
Current portion of 5-year term loan credit agreement    expires 2027		43.7			25.0
Current portion of 4.200% senior notes, semi-annual interest payments, net of the unamortized discount, balloon due 2024		500.0			—
Total current portion of long-term debt		568.7			250.6
Long-term debt:
Note agreements:
4.200% senior notes, semi-annual interest payments, net of the unamortized discount, balloon due 2024		—			499.7
4.500% senior notes, semi-annual interest payments, net of the unamortized discount, balloon due 2029		349.7			349.7
2.375% senior notes, semi-annual interest payments, net of the unamortized discount, balloon due 2031		699.5			699.4
4.200% senior notes, semi-annual interest payments, net of the unamortized discount, balloon due 2032		598.2			598.0
4.950% senior notes, semi-annual interest payments, net of the unamortized discount, balloon due 2052		592.2			592.0
Total notes		2,239.6			2,738.8
Credit agreements:
5-year term loan facility, periodic interest and principal payments, SOFR plus up to 1.750%, expires October 27, 2026		193.8			218.8
5-year revolving loan facility, periodic interest payments, SOFR plus up to 1.525%, plus commitment fees up to 0.225%, expires October 27, 2026		100.0			—
3-year term loan facility, periodic interest and principal payments, SOFR plus up to 1.625%, expires March 31, 2025		300.0			300.0
5-year term loan facility, periodic interest and principal payments, SOFR plus up to 1.750%, expires March 31, 2027		412.5			456.2
Total credit agreements		1,006.3			975.0
Debt issuance costs (contra)		(19.0	)		(22.3	)
Total long-term debt less unamortized discount and    debt issuance costs		3,226.9			3,691.5
Current portion of long-term debt		568.7			250.6
Total debt	$	3,795.6		$	3,942.1