Debt (Tables)

6 Months Ended

Jun. 30, 2025

Debt Disclosure [Abstract]

Long-Term Debt

	June 30,			December 31,
	2025			2024
	(Dollars in Millions)
7% Debentures, due 2025		125			125
3.450% Senior Notes, due 2027		299			299
3.500% Senior Notes, due 2027		493			493
2.500% Senior Notes, due 2030		473			472
2.400% Senior Notes, due 2031		891			890
5.150% Senior Notes, due 2034		738			738
6.25% Senior Notes, due 2037		228			228
4.250% Senior Notes, due 2047		591			591
3.200% Senior Notes, due 2051		851			851
5.500% Senior Notes, due 2054		727			726
Total debt		5,416			5,413
Less: current maturities		(125	)		(125	)
Long-term debt	$	5,291		$	5,288