Annual report [Section 13 and 15(d), not S-K Item 405]

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, 2025
Dec. 31, 2024
Amounts recognized in the statements of financial position consist of:    
Long-term liabilities $ (103.4) $ (106.7)
Pension Benefits    
Amounts recognized in the statements of financial position consist of:    
Noncurrent assets 0.0 0.0
Current liabilities (6.7) (7.1)
Long-term liabilities (99.7) (102.8)
Funded status of plan (106.4) (109.9)
Other Benefits    
Amounts recognized in the statements of financial position consist of:    
Noncurrent assets 1.1 2.2
Current liabilities (0.1) (0.1)
Long-term liabilities (0.7) (1.1)
Funded status of plan $ 0.3 $ 1.0