Other Comprehensive Income (Loss) (Tables)

6 Months Ended

Jun. 30, 2023

Equity [Abstract]

Schedule of Changes in AOCI balance by Component

	Pension and Other Post-Employment Benefits		Interest Rate Derivatives		Other		Accumulated Other Comprehensive Income (Loss)
(Dollars in millions)
Balance December 31, 2022, Net of Tax	$	(497)	$	150	$	(41)	$	(388)
Other Comprehensive Income (Loss)
Income Before Reclassifications	—		3		—		3
Amounts Reclassified to Net Earnings	10		—		—		10
Tax Expense	(2)		(13)		—		(15)
Total Other Comprehensive Income	8		(10)		—		(2)
Balance June 30, 2023, Net of Tax	$	(489)	$	140	$	(41)	$	(390)