Annual report pursuant to Section 13 and 15(d)

BENEFIT PLANS - Net Amounts Recognized, or Funded Status of Pension and Other Postretirement Benefit Plans (Details)

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BENEFIT PLANS - Net Amounts Recognized, or Funded Status of Pension and Other Postretirement Benefit Plans (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Amounts recognized in the statements of financial position consist of:    
Long-term liabilities $ (100.4) $ (130.1)
Pension Benefits    
Amounts recognized in the statements of financial position consist of:    
Current liabilities (6.7) (6.8)
Long-term liabilities (95.4) (124.6)
Funded status of plan (102.1) (131.4)
Other Benefits    
Amounts recognized in the statements of financial position consist of:    
Current liabilities (0.1) (0.1)
Long-term liabilities (2.0) (2.0)
Funded status of plan $ (2.1) $ (2.1)