Postretirement benefit plans (Tables)

3 Months Ended

Mar. 31, 2022

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 March 31,	2022		2021		2022		2021		2022		2021
Service cost	$	4	$	5	$	1	$	1	$	7	$	9
Interest cost	6		8		3		3		10		9
Expected return on plan assets	(8)		(8)		(4)		(3)		(18)		(20)
Recognized net actuarial loss	—		4		—		—		—		2
Net periodic benefit costs	2		9		—		1		(1)		—
Settlement losses	2		4		—		—		1		1
Total, including other postretirement losses	$	4	$	13	$	—	$	1	$	—	$	1