Postretirement benefit plans (Tables)

3 Months Ended

Mar. 31, 2026

Retirement Benefits [Abstract]

Schedule of 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,	2026		2025		2026		2025		2026		2025
Service cost	$	2	$	2	$	—	$	—	$	4	$	4
Interest cost	6		6		3		3		16		14
Expected return on plan assets	(6)		(4)		(3)		(3)		(19)		(18)
Recognized net actuarial losses (gains)	1		2		—		—		(1)		1
Amortization of prior service cost (credit)	—		—		—		—		1		—
Net periodic benefit costs (credits)	$	3	$	6	$	—	$	—	$	1	$	1