Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2024

Retirement Benefits [Abstract]

Schedule of Components of Net Periodic Benefit Costs

	Pension Benefits Cost
	Second Quarters				Six Months
(Dollars in Millions)	2024		2023		2024		2023
Service Cost Included in Labor and Fringe	$	6	$	6	$	12	$	12
Interest Cost	27		28		53		56
Expected Return on Plan Assets	(43)		(41)		(85)		(82)
Amortization of Net Loss	4		7		9		14
Total Included in Other Income - Net	(12)		(6)		(23)		(12)
Net Periodic Benefit Credit	$	(6)	$	—	$	(11)	$	—