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Retirement Benefits
 9 Months Ended
Jun. 30, 2026
Retirement Benefits [Abstract]  
Retirement Benefits Retirement Benefits
The components of net periodic pension and postretirement benefit cost were (in millions):
Pension Benefits
Three Months Ended
June 30,		Nine Months Ended
June 30,
2026202520262025
Service cost$10 $10 $28 $31 
Interest cost34 34 103 102 
Expected return on plan assets(42)(42)(127)(125)
Amortization of net actuarial loss3 7 11 20 
Net periodic pension benefit cost$5 $9 $15 $28 
Other Postretirement Benefits
Three Months Ended
June 30,		Nine Months Ended
June 30,
2026202520262025
Service cost$— $— $1 $— 
Interest cost— 1 1 1 
Amortization of net actuarial loss1 — 2 2 
Net periodic postretirement benefit cost$1 $1 $4 $3 
The service cost component is included in Cost of sales, Selling, general and administrative expenses, and Engineering and development in the Consolidated Statement of Operations. All other components are included in Other income in the Consolidated Statement of Operations.