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Postretirement and Other Benefits (Tables)
9 Months Ended
Sep. 30, 2023
Retirement Benefits [Abstract]  
Schedule of Components of Net Pension Cost (Benefit)
The components of net pension cost (benefit) were as follows (in millions):
Pension Benefits
Other Post-employment Plans(1)
 U.S.Non-U.S. U.S.Non-U.S.
Three Months Ended September 30,
 20232022202320222023
Service cost$0.4 $0.5 $0.3 $0.2 $— $0.3 
Interest cost4.4 4.1 2.1 1.4 0.3 — 
Expected return on plan assets(5.5)(5.0)(1.1)(1.2)— — 
Amortizations and other— 0.5 0.1 — — — 
Net pension cost (benefit)$(0.7)$0.1 $1.4 $0.4 $0.3 $0.3 
Pension Benefits
Other Post-employment Plans(1)
 U.S.Non-U.S.U.S.Non-U.S.
Nine Months Ended September 30,
 20232022202320222023
Service cost$1.2 $0.5 $0.8 $0.4 $0.1 $0.9 
Interest cost13.3 5.7 6.3 3.0 0.9 0.1 
Expected return on plan assets(16.6)(7.0)(3.3)(3.1)— — 
Amortizations and other— 1.3 0.4 — — — 
Net pension cost (benefit)$(2.1)$0.5 $4.2 $0.3 $1.0 $1.0 

(1) As of September 30, 2022, the Company's U.S. and Non-U.S. OPEB liabilities were immaterial and therefore not included in these disclosures.