Pensions and Other Postretirement Benefits (Tables)

6 Months Ended

Jun. 30, 2023

Retirement Benefits [Abstract]

Net Periodic Benefit Cost

Net periodic pension benefit cost/(income) and other postretirement benefit cost for the three and six months ended June 30, 2023 and 2022 was as follows:

	Pension
	Three Months Ended June 30		Six Months Ended June 30
($ in millions)	2023	2022	2023	2022
Service cost	$2	$2	$4	$4
Interest cost	24	18	55	37
Expected return on plan assets	(24)	(35)	(55)	(71)
Amortization of actuarial losses	3	9	10	17
Settlements	1	—	191	—
Net periodic benefit cost/(income)	$6	($6)	$205	($13)

	Other Postretirement Benefits
	Three Months Ended June 30		Six Months Ended June 30
($ in millions)	2023	2022	2023	2022
Service cost	$1	$1	$2	$4
Interest cost	6	4	13	8
Amortization of actuarial (gains)/losses	(1)	2	(1)	6
Amortization of prior service credit	(1)	(2)	(3)	(5)
Net periodic benefit cost	$5	$5	$11	$13

Defined Contribution Plan Disclosures

Contributions to Defined Benefit Pension Plans

	Three Months Ended June 30		Six Months Ended June 30
($ in millions)	2023	2022	2023	2022
Non-U.S. defined benefit pension mandatory contributions	$1	$1	$2	$2