Postretirement benefit plans (Tables)

6 Months Ended

Jun. 30, 2023

Retirement Benefits [Abstract]

Expense Related to Defined Benefit and Retiree Health Care Benefit Plans

Expenses related to defined benefit and retiree health care benefit plans are as follows:

	U.S. Defined Benefit				U.S. Retiree Health Care				Non-U.S. Defined Benefit
For Three Months Ended June 30,	2023		2022		2023		2022		2023		2022
Service cost	$	2	$	4	$	1	$	—	$	4	$	6
Interest cost	7		6		3		2		15		9
Expected return on plan assets	(5)		(8)		(4)		(2)		(17)		(17)
Recognized net actuarial losses (gains)	1		1		(2)		—		3		—
Net periodic benefit costs (credits)	5		3		(2)		—		5		(2)
Settlement losses	1		11		—		—		1		8
Total, including other postretirement losses (gains)	$	6	$	14	$	(2)	$	—	$	6	$	6
	U.S. Defined Benefit				U.S. Retiree Health Care				Non-U.S. Defined Benefit
For Six Months Ended June 30,	2023		2022		2023		2022		2023		2022
Service cost	$	4	$	8	$	1	$	1	$	8	$	13
Interest cost	14		12		7		5		29		19
Expected return on plan assets	(11)		(16)		(9)		(6)		(32)		(35)
Recognized net actuarial losses (gains)	3		1		(3)		—		6		—
Net periodic benefit costs (credits)	10		5		(4)		—		11		(3)
Settlement losses	1		13		—		—		1		9
Total, including other postretirement losses (gains)	$	11	$	18	$	(4)	$	—	$	12	$	6