Retirement Plans (Tables)

6 Months Ended

Jun. 30, 2025

Pension [Member]

Net Periodic Benefit Cost

		Pension Benefits
	For the three months ended June 30,				For the six months ended ‎June 30,
($ in millions)	2025		2024		2025		2024
Components of total pension benefit cost
Service cost	$	11	$	11	$	22	$	23
Interest cost on projected benefit obligation		32		33		64		63
Expected return on plan assets		(38)		(42)		(76)		(84)
Pension remeasurement gain		-		72		(44)		(2)
Net periodic pension (benefit) costs		5		74		(34)		-
Pension special termination benefit enhancements		-		4		-		10
Total pension (benefit) cost	$	5	$	78	$	(34)	$	10

OPEB [Member]

Net Periodic Benefit Cost

		Postretirement
	For the three months ended June 30,				For the six months ended ‎June 30,
($ in millions)	2025		2024		2025		2024
Components of net periodic postretirement benefit cost
Service cost	$	1	$	2	$	2	$	3
Interest cost on projected benefit obligation		7		8		14		15
Amortization of prior service credit gain recognized		(6)		(7)		(12)		(13)
OPEB remeasurement (gain) loss		-		(18)		8		(27)
Total periodic postretirement (benefit) cost	$	2	$	(15)	$	12	$	(22)