Other Comprehensive Income (Loss) (Tables)

3 Months Ended

Mar. 31, 2024

Equity [Abstract]

Schedule of Changes in AOCI balance by Component

	Pension and Other Post-Employment Benefits		Interest Rate Derivatives		Other		Accumulated Other Comprehensive (Loss) Income
(Dollars in Millions)
Balance December 31, 2023, Net of Tax	$	(423)	$	150	$	(39)	$	(312)
Other Comprehensive Income (Loss)
Income Before Reclassifications	—		3		—		3
Amounts Reclassified to Net Earnings	3		—		2		5
Tax Expense	(1)		(1)		—		(2)
Total Other Comprehensive Income	2		2		2		6
Balance March 31, 2024, Net of Tax	$	(421)	$	152	$	(37)	$	(306)