v3.26.3
Postretirement benefits (Tables)
 9 Months Ended
Sep. 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 September 30U.S. PlansNon-U.S. PlansU.S. PlansNon-U.S. Plans
(in millions of U.S. dollars)
Service cost$— $2 $— $2 $1 $— 
Non-service cost (benefit):
Interest cost31 9 34 9 — — 
Expected return on plan assets(68)(15)(62)(15)— (1)
Amortization of net actuarial (gain) loss(3)— (2)1 — — 
Amortization of prior service cost— — — — — — 
Settlements— — — — — — 
Total non-service cost (benefit)(40)(6)(30)(5)— (1)
Net periodic benefit cost (benefit)$(40)$(4)$(30)$(3)$1 $(1)
Pension Benefit PlansOther Postretirement Benefit Plans
2026202520262025
Nine Months Ended September 30U.S. PlansNon-U.S. PlansU.S. PlansNon-U.S. Plans
(in millions of U.S. dollars)
Service cost$— $7 $— $6 $1 $— 
Non-service cost (benefit):
Interest cost93 27 101 27 1 1 
Expected return on plan assets(203)(47)(187)(42)— (2)
Amortization of net actuarial (gain) loss(9)(1)(6)1 — (2)
Amortization of prior service cost— — — — — — 
Settlements— — — — — — 
Total non-service cost (benefit)(119)(21)(92)(14)1 (3)
Net periodic benefit cost (benefit)$(119)$(14)$(92)$(8)$2 $(3)
The line items in which the service cost and non-service cost (benefit) components of net periodic cost (benefit) are included in the Consolidated statements of operations were as follows:
Pension Benefit PlansOther Postretirement
Benefit Plans
Three Months Ended September 302026202520262025
(in millions of U.S. dollars)
Service cost:
Losses and loss expenses$— $— $— $— 
Administrative expenses2 2 1— 
Total service cost2 21 —
Non-service cost (benefit):
Losses and loss expenses(4)(3)——
Administrative expenses(42)(32)— (1)
Total non-service cost (benefit)(46)(35)— (1)
Net periodic benefit cost (benefit)$(44)$(33)$1 $(1)

Pension Benefit PlansOther Postretirement
Benefit Plans
Nine Months Ended September 302026202520262025
(in millions of U.S. dollars)
Service cost:
Losses and loss expenses$— $— $— $— 
Administrative expenses76 1—
Total service cost7 61 —
Non-service cost (benefit):
Losses and loss expenses(13)(10)——
Administrative expenses(127)(96)1 (3)
Total non-service cost (benefit)(140)(106)1 (3)
Net periodic benefit cost (benefit)$(133)$(100)$2 $(3)