v3.26.1
Postretirement benefits (Tables)
 6 Months Ended
Jun. 30, 2026
Retirement Benefits [Abstract]  
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 PlansOther Postretirement
Benefit Plans
2026202520262025
Three Months Ended June 30U.S. PlansNon-U.S. PlansU.S. PlansNon-U.S. Plans
(in millions of U.S. dollars)
Service cost$— $3 $— $2 $— $— 
Non-service cost (benefit):
Interest cost31 9 33 9 1 1 
Expected return on plan assets(67)(16)(62)(14)— (1)
Amortization of net actuarial (gain) loss(3)(1)(2)— — (1)
Amortization of prior service cost— — — — — — 
Settlements— — — — — — 
Total non-service cost (benefit)(39)(8)(31)(5)1 (1)
Net periodic benefit cost (benefit)$(39)$(5)$(31)$(3)$1 $(1)

Pension Benefit PlansOther Postretirement Benefit Plans
2026202520262025
Six Months Ended June 30U.S. PlansNon-U.S. PlansU.S. PlansNon-U.S. Plans
(in millions of U.S. dollars)
Service cost$— $5 $— $4 $— $— 
Non-service cost (benefit):
Interest cost62 18 67 18 1 1 
Expected return on plan assets(135)(32)(125)(27)— (1)
Amortization of net actuarial (gain) loss(6)(1)(4)— — (2)
Amortization of prior service cost— — — — — — 
Settlements— — — — — — 
Total non-service cost (benefit)(79)(15)(62)(9)1 (2)
Net periodic benefit cost (benefit)$(79)$(10)$(62)$(5)$1 $(2)
The line items in which the service cost and non-service cost (benefit) components of net periodic cost (benefit) are included in the Consolidated statements of operations were as follows:
Pension Benefit PlansOther Postretirement
Benefit Plans
Three Months Ended June 302026202520262025
(in millions of U.S. dollars)
Service cost:
Losses and loss expenses$— $— $— $— 
Administrative expenses3 2 —— 
Total service cost3 2— —
Non-service cost (benefit):
Losses and loss expenses(5)(4)——
Administrative expenses(42)(32)1 (1)
Total non-service cost (benefit)(47)(36)1 (1)
Net periodic benefit cost (benefit)$(44)$(34)$1 $(1)

Pension Benefit PlansOther Postretirement
Benefit Plans
Six Months Ended June 302026202520262025
(in millions of U.S. dollars)
Service cost:
Losses and loss expenses$— $— $— $— 
Administrative expenses54 ——
Total service cost5 4— —
Non-service cost (benefit):
Losses and loss expenses(9)(7)——
Administrative expenses(85)(64)1 (2)
Total non-service cost (benefit)(94)(71)1 (2)
Net periodic benefit cost (benefit)$(89)$(67)$1 $(2)