Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2020

Debt Disclosure [Abstract]

Long-Term Debt

December 31 (in millions)	2020		2019
4.25% Senior Notes, due 2024	$	397.6	$	397.0
7% Debentures, due 2025		124.5		124.4
3.450% Senior Notes, due 2027		297.6		297.3
3.500% Senior Notes, due 2027		495.8		495.3
2.500% Senior Notes, due 2030		490.1		—
6.25% Senior Notes, due 2037		228.2		228.1
4.250% Senior Notes, due 2047		591.9		591.7
Floating Rate Senior Notes, due 2020, interest rate of 2.55%    at December 31, 2019		—		299.7
Trade Receivable Facility, interest rate of 2.42% at December 31, 2019		—		340.0
Other notes		0.1		0.1
Total debt		2,625.8		2,773.6
Less: current maturities		—		(340.0	)
Long-term debt	$	2,625.8	$	2,433.6

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

	Principal Amount (in millions)		Effective Interest Rate	Maturity Date
4.25% Senior Notes	$	400.0	4.25%	July 2, 2024
7% Debentures	$	125.0	7.12%	December 1, 2025
3.450% Senior Notes	$	300.0	3.47%	June 1, 2027
3.500% Senior Notes	$	500.0	3.53%	December 15, 2027
2.500% Senior Notes	$	500.0	2.71%	March 15, 2030
6.25% Senior Notes	$	230.0	6.45%	May 1, 2037
4.250% Senior Notes	$	600.0	4.27%	December 15, 2047

Schedule of Corporation's Long-Term Debt Maturities

The Company’s long-term debt maturities for the five years following December 31, 2020, and thereafter are:  

(in millions)
2021	$	—
2022		0.1
2023		—
2024		397.6
2025		124.5
Thereafter		2,103.6
Total	$	2,625.8