v3.26.3
Pensions and Other Postretirement Benefits (Tables)
 9 Months Ended
Sep. 30, 2026
Retirement Benefits [Abstract]  
Net Periodic Benefit Cost
Net periodic pension benefit cost and other postretirement benefit cost for the three and nine months ended September 30, 2026 and 2025 was as follows:

Pension
Three Months Ended
September 30		Nine Months Ended
September 30
($ in millions)2026202520262025
Service cost$2 $3 $7 $7 
Interest cost25 27 75 78 
Expected return on plan assets(28)(27)(85)(79)
Amortization of actuarial losses7 6 20 18 
Settlements— 1 1 2 
Net periodic benefit cost$6 $10 $18 $26 
Other Postretirement Benefits
Three Months Ended
September 30		Nine Months Ended
September 30
($ in millions)2026202520262025
Service cost$1 $1 $2 $2 
Interest cost4 6 14 17 
Amortization of actuarial gains— (1)(1)(1)
Amortization of prior service credit(1)(1)(2)(3)
Net periodic benefit cost$4 $5 $13 $15 
Defined Contribution Plan Disclosures
Contributions to Defined Benefit Pension Plans
Three Months Ended
September 30		Nine Months Ended
September 30
($ in millions)2026202520262025
U.S. defined benefit pension contributions$4 $6 $11 $13 
Non-U.S. defined benefit pension contributions$1 $— $4 $1