Pensions and Other Postretirement Benefits (Tables)

9 Months Ended

Sep. 30, 2022

Retirement Benefits [Abstract]

Net Periodic Benefit Cost

Net periodic pension benefit income and other postretirement benefit cost/(income) for the three and nine months ended September 30, 2022 and 2021 was as follows:

	Pension
	Three Months Ended September 30		Nine Months Ended September 30
($ in millions)	2022	2021	2022	2021
Service cost	$3	$3	$7	$8
Interest cost	18	17	55	49
Expected return on plan assets	(35)	(38)	(106)	(114)
Amortization of actuarial losses	8	10	25	30
Net periodic benefit income	($6)	($8)	($19)	($27)

	Other Postretirement Benefits
	Three Months Ended September 30		Nine Months Ended September 30
($ in millions)	2022	2021	2022	2021
Service cost	$2	$3	$6	$9
Interest cost	4	3	12	10
Amortization of actuarial losses	3	5	9	15
Amortization of prior service credit	(3)	(14)	(8)	(41)
Net periodic benefit cost/(income)	$6	($3)	$19	($7)

Defined Contribution Plan Disclosures

	Three Months Ended September 30		Nine Months Ended September 30
($ in millions)	2022	2021	2022	2021
Non-U.S. defined benefit pension mandatory contributions	$—	$1	$2	$3