Annual report pursuant to Section 13 and 15(d)

BENEFIT PLANS - Components of Net Periodic Benefit Cost (Details)

v3.25.0.1
BENEFIT PLANS - Components of Net Periodic Benefit Cost (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]      
Recognized actuarial loss (gain) - mark to market $ 11.6 $ 0.1  
Pension Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Service cost 0.8 1.2 $ 1.5
Interest cost 24.2 27.4 20.1
Expected return on plan assets (22.5) (22.8) (24.8)
Amortization of prior service cost 0.6 0.4 (1.7)
Recognized actuarial loss (gain) - mark to market 11.7 1.9 (2.7)
Settlements 0.0 0.0 (1.0)
Total net periodic benefit cost (income) 14.8 8.1 (8.6)
Other Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Service cost 0.1 0.1 0.2
Interest cost 0.6 0.7 0.5
Expected return on plan assets (0.7) (0.6) (0.7)
Amortization of prior service cost (0.5) (0.5) (0.5)
Recognized actuarial loss (gain) - mark to market (0.1) (1.8) 0.5
Settlements 0.0 0.0 0.0
Total net periodic benefit cost (income) $ (0.6) $ (2.1) $ 0.0