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RETIREMENT PLANS AND OTHER BENEFITS (Tables)
9 Months Ended
Sep. 30, 2023
Retirement Benefits [Abstract]  
Schedule of Components of Net Periodic Cost Information regarding the Company’s plans, including the U.S. SERP, is as follows (in millions):
 
Three Months Ended
September 30,
Nine Months Ended
September 30,
 2023202220232022
U.S. PensionNon-U.S. PensionOtherU.S. PensionNon-U.S. PensionOtherU.S. PensionNon-U.S. PensionOtherU.S. PensionNon-U.S. PensionOther
Components of net periodic cost:
  
Service cost$— $0.2 $— $— $0.2 $— $— $0.5 $— $— $0.6 $— 
Interest cost0.4 1.1 0.1 0.3 0.5 0.1 1.3 3.3 0.1 0.9 1.9 0.1 
Expected return on plan assets
— (0.8)— — (1.1)— — (2.4)— — (3.8)— 
Amortization of prior service cost
— — — — — — — 0.1 — — — — 
Amortization of actuarial (gain) loss
— 0.6 (0.1)0.1 0.2 — (0.1)1.7 (0.1)0.2 0.9 — 
Net periodic cost $0.4 $1.1 $— $0.4 $(0.2)$0.1 $1.2 $3.2 $— $1.1 $(0.4)$0.1