Postretirement benefits

3 Months Ended

Mar. 31, 2024

Retirement Benefits [Abstract]

Compensation and Employee Benefit Plans [Text Block]

Postretirement benefits

The components of net pension and other postretirement benefit costs (benefits) reflected in Net income in the Consolidated statements of operations were as follows:

	Pension Benefit Plans								Other Postretirement Benefit Plans
	2024				2023				2024		2023
Three Months Ended March 31	U.S. Plans		Non-U.S. Plans		U.S. Plans		Non-U.S. Plans
(in millions of U.S. dollars)
Service cost	$	—	$	2	$	—	$	2	$	—	$	—
Non-service cost (benefit):
Interest cost	33		9		34		9		1		—
Expected return on plan assets	(61)		(13)		(56)		(12)		(1)		(1)
Amortization of net actuarial (gain) loss	—		1		—		—		(1)		—
Amortization of prior service cost	—		—		—		—		—		—
Settlements	—		—		—		—		—		—
Total non-service cost (benefit)	(28)		(3)		(22)		(3)		(1)		(1)
Net periodic benefit cost (benefit)	$	(28)	$	(1)	$	(22)	$	(1)	$	(1)	$	(1)

The line items in which the service cost and non-service cost (benefit) components of net periodic cost (benefit) are included in the Consolidated statements of operations were as follows:

	Pension Benefit Plans				Other Postretirement Benefit Plans
Three Months Ended March 31	2024		2023		2024		2023
(in millions of U.S. dollars)
Service cost:
Losses and loss expenses	$	—	$	—	$	—	$	—
Administrative expenses	2		2		—		—
Total service cost	2		2		—		—
Non-service cost (benefit):
Losses and loss expenses	(3)		(2)		—		—
Administrative expenses	(28)		(23)		(1)		(1)
Total non-service cost (benefit)	(31)		(25)		(1)		(1)
Net periodic benefit cost (benefit)	$	(29)	$	(23)	$	(1)	$	(1)