Debt and Credit Agreements Schedule of Long-term Debt Instruments (Tables)

12 Months Ended

Dec. 31, 2022

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments [Table Text Block]

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

	Effective Interest Rate		December 31,
			2022 1		2021 1
4.200% Senior Notes due 2024 (less unamortized discount and issuance costs of $0.0 and $0.3, respectively)	4.240	%	$	249.7	$	249.4
4.650% Senior Notes due 2028 (less unamortized discount and issuance costs of $1.0 and $2.6, respectively)	4.780	%	496.4		495.8
4.750% Senior Notes due 2030 (less unamortized discount and issuance costs of $2.9 and $4.5, respectively)	4.920	%	642.6		641.7
2.400% Senior Notes due 2031 (less unamortized discount and issuance costs of $0.7 and $3.8, respectively)	2.512	%	495.5		495.0
3.375% Senior Notes due 2041 (less unamortized discount and issuance costs of $1.0 and $5.3, respectively)	3.448	%	493.7		493.4
5.400% Senior Notes due 2048 (less unamortized discount and issuance costs of $2.6 and $4.8, respectively)	5.480	%	492.6		492.3
Other notes payable and capitalized leases			0.8		41.7
Total long-term debt			2,871.3		2,909.3
Less: current portion			0.6		0.7
Long-term debt, excluding current portion			$	2,870.7	$	2,908.6

1See Note 13 for information on the fair value measurement of our long-term debt.