Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2022

Debt Disclosure [Abstract]

Long-Term Debt

December 31  (in millions)	2022			2021
0.650% Senior Notes, due 2023 (discharged)	$	699.1		$	697.4
4.250% Senior Notes, due 2024		398.9			398.3
7% Debentures, due 2025		124.7			124.6
3.450% Senior Notes, due 2027		298.3			297.9
3.500% Senior Notes, due 2027		491.5			496.4
2.500% Senior Notes, due 2030		470.5			491.1
2.400% Senior Notes, due 2031		888.6			891.8
6.25% Senior Notes, due 2037		228.4			228.3
4.250% Senior Notes, due 2047		590.2			592.1
3.200% Senior Notes, due 2051		849.8			882.9
Other notes		—			0.1
Total debt		5,040.0			5,100.9
Less: current maturities		(699.1	)		(0.1	)
Long-term debt	$	4,340.9		$	5,100.8

Schedule of Principal Amount, Effective Interest Rate and Maturity Date for Corporation's Senior Notes

	Principal Amount (in millions)		Effective Interest Rate	Maturity Date
0.650% Senior Notes (discharged)	$	700.0	0.78%	July 15, 2023
4.250% Senior Notes	$	400.0	4.40%	July 2, 2024
7% Debentures	$	125.0	7.05%	December 1, 2025
3.450% Senior Notes	$	300.0	3.55%	June 1, 2027
3.500% Senior Notes	$	494.6	3.61%	December 15, 2027
2.500% Senior Notes	$	478.0	2.70%	March 15, 2030
2.400% Senior Notes	$	895.9	2.48%	July 15, 2031
6.25% Senior Notes	$	230.0	6.32%	May 1, 2037
4.250% Senior Notes	$	597.9	4.32%	December 15, 2047
3.200% Senior Notes	$	865.9	3.29%	July 15, 2051

Schedule of Corporation's Long-Term Debt Maturities

The Company’s long-term debt maturities, including the discharged 0.650% Senior Notes, for the five years following December 31, 2022, and thereafter are:

(in millions)
2023	$	699.1
2024		398.9
2025		124.7
2026		—
2027		789.8
Thereafter		3,027.5
Total	$	5,040.0