Pension Plans and Other Postretirement Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2025

Retirement Benefits, Description [Abstract]

Components of Net Periodic Benefit Cost

The Company uses a December 31 measurement date for its defined benefit pension and other postretirement benefit plans. The following table sets forth the components of net periodic benefit costs for the three months ended March 31 (dollars in millions):

	Pension Benefits						Other Postretirement Benefits
	2025			2024			2025			2024
Service cost	$	4		$	4		$	—		$	—
Interest cost		9			8			2			2
Expected return on plan assets		(11	)		(11	)		(1	)		(1	)
Net loss recognition		1			1			—			—
Net periodic benefit cost	$	3		$	2		$	1		$	1