Long-Term Debt (Tables)

9 Months Ended

Sep. 30, 2023

Debt Disclosure [Abstract]

Long-Term Debt

	September 30,			December 31,
	2023			2022
	(Dollars in Millions)
0.650% Senior Notes, due 2023 (discharged)	$	—		$	699.1
4.250% Senior Notes, due 2024		399.5			398.9
7% Debentures, due 2025		124.8			124.7
3.450% Senior Notes, due 2027		298.6			298.3
3.500% Senior Notes, due 2027		492.0			491.5
2.500% Senior Notes, due 2030		471.3			470.5
2.400% Senior Notes, due 2031		889.2			888.6
6.25% Senior Notes, due 2037		228.4			228.4
4.250% Senior Notes, due 2047		590.3			590.2
3.200% Senior Notes, due 2051		850.1			849.8
Total debt		4,344.2			5,040.0
Less: current maturities		(399.5	)		(699.1	)
Long-term debt	$	3,944.7		$	4,340.9