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Retirement Benefits
 6 Months Ended
Mar. 31, 2024
Retirement Benefits [Abstract]  
Retirement Benefits RETIREMENT BENEFITS
The components of net periodic cost for our defined benefit pension plans for the three and six months ended 31 March 2024 and 2023 were as follows:
Pension Benefits
20242023
Three Months Ended 31 MarchU.S.InternationalTotalU.S.InternationalTotal
Service cost$2.4 $2.8 $5.2 $2.8 $3.0 $5.8 
Non-service cost:
  Interest cost33.7 15.0 48.7 32.5 14.9 47.4 
  Expected return on plan assets(30.0)(11.9)(41.9)(31.8)(12.2)(44.0)
  Prior service cost amortization0.3 0.3 0.6 0.3 0.1 0.4 
  Actuarial loss amortization14.3 3.2 17.5 15.0 3.0 18.0 
  Settlements— 0.2 0.2 0.9 0.2 1.1 
Other— 0.1 0.1 — 0.2 0.2 
Net Periodic Cost$20.7 $9.7 $30.4 $19.7 $9.2 $28.9 
Pension Benefits
20242023
Six Months Ended 31 MarchU.S.InternationalTotalU.S.InternationalTotal
Service cost$4.8 $5.6 $10.4 $5.5 $6.3 $11.8 
Non-service cost:
Interest cost67.4 29.8 97.2 65.0 29.3 94.3 
Expected return on plan assets(60.0)(23.5)(83.5)(63.6)(24.0)(87.6)
Prior service cost amortization0.6 0.5 1.1 0.6 0.1 0.7 
Actuarial loss amortization28.6 6.4 35.0 29.8 6.0 35.8 
Settlements— 0.2 0.2 0.9 0.2 1.1 
Curtailments— — — — (1.9)(1.9)
Other— 0.2 0.2 — 0.5 0.5 
Net Periodic Cost$41.4 $19.2 $60.6 $38.2 $16.5 $54.7 
Our service costs are primarily included within "Cost of sales" and "Selling and administrative expense" on our consolidated income statements. The amount of service costs capitalized in the first six months of fiscal years 2024 and 2023 were not material. The non-service related impacts are presented outside operating income within "Other non-operating income (expense), net."
For the six months ended 31 March 2024 and 2023, our cash contributions to funded pension plans and benefit payments under unfunded pension plans were $19.2 and $15.4, respectively. Total contributions for fiscal year 2024 are expected to be approximately $35 to $45. During fiscal year 2023, total contributions were $32.6.
During the three and six months ended 31 March 2024, we recognized actuarial gain amortization of $0.2 and $0.3, respectively, for our other postretirement benefits plan.