Postretirement benefits (Tables)

6 Months Ended

Jun. 30, 2026

Schedule of Net Benefit Costs [Table 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
	2026				2025				2026		2025
Three Months Ended June 30	U.S. Plans		Non-U.S. Plans		U.S. Plans		Non-U.S. Plans
(in millions of U.S. dollars)
Service cost	$	—	$	3	$	—	$	2	$	—	$	—
Non-service cost (benefit):
Interest cost	31		9		33		9		1		1
Expected return on plan assets	(67)		(16)		(62)		(14)		—		(1)
Amortization of net actuarial (gain) loss	(3)		(1)		(2)		—		—		(1)
Amortization of prior service cost	—		—		—		—		—		—

Settlements	—		—		—		—		—		—
Total non-service cost (benefit)	(39)		(8)		(31)		(5)		1		(1)
Net periodic benefit cost (benefit)	$	(39)	$	(5)	$	(31)	$	(3)	$	1	$	(1)


	Pension Benefit Plans								Other Postretirement Benefit Plans
	2026				2025				2026		2025
Six Months Ended June 30	U.S. Plans		Non-U.S. Plans		U.S. Plans		Non-U.S. Plans
(in millions of U.S. dollars)
Service cost	$	—	$	5	$	—	$	4	$	—	$	—
Non-service cost (benefit):
Interest cost	62		18		67		18		1		1
Expected return on plan assets	(135)		(32)		(125)		(27)		—		(1)
Amortization of net actuarial (gain) loss	(6)		(1)		(4)		—		—		(2)
Amortization of prior service cost	—		—		—		—		—		—
Settlements	—		—		—		—		—		—
Total non-service cost (benefit)	(79)		(15)		(62)		(9)		1		(2)
Net periodic benefit cost (benefit)	$	(79)	$	(10)	$	(62)	$	(5)	$	1	$	(2)

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 June 30	2026		2025		2026		2025
(in millions of U.S. dollars)
Service cost:
Losses and loss expenses	$	—	$	—	$	—	$	—
Administrative expenses	3		2		—		—
Total service cost	3		2		—		—
Non-service cost (benefit):
Losses and loss expenses	(5)		(4)		—		—
Administrative expenses	(42)		(32)		1		(1)
Total non-service cost (benefit)	(47)		(36)		1		(1)
Net periodic benefit cost (benefit)	$	(44)	$	(34)	$	1	$	(1)


	Pension Benefit Plans				Other Postretirement Benefit Plans
Six Months Ended June 30	2026		2025		2026		2025
(in millions of U.S. dollars)
Service cost:
Losses and loss expenses	$	—	$	—	$	—	$	—
Administrative expenses	5		4		—		—
Total service cost	5		4		—		—
Non-service cost (benefit):
Losses and loss expenses	(9)		(7)		—		—
Administrative expenses	(85)		(64)		1		(2)
Total non-service cost (benefit)	(94)		(71)		1		(2)
Net periodic benefit cost (benefit)	$	(89)	$	(67)	$	1	$	(2)

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