XML 83 R67.htm IDEA: XBRL DOCUMENT v3.24.0.1
EMPLOYEE BENEFIT PLANS - Schedule of Change in Benefit Obligation, Change in Plan Assets and Components of Funded Status (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Pension Benefits      
Change in benefit obligation:      
Projected benefit obligation - beginning of year $ 433.8 $ 549.3  
Service cost 3.1 4.1 $ 4.7
Interest cost 19.6 14.1 14.2
Actuarial loss / (gain) 9.2 (80.8)  
Benefits paid (44.8) (47.1)  
Other 2.9 (5.8)  
Projected benefit obligation - end of year 423.8 433.8 549.3
Projected salary increases (6.5) (6.3)  
Accumulated benefit obligation 417.3 427.5  
Change in plan assets:      
Plan assets - beginning of year 396.6 529.3  
Actual return on plan assets 37.7 (89.9)  
Company contributions 9.1 6.3  
Benefits paid (44.8) (47.0)  
Other 1.9 (2.1)  
Plan assets - end of year 400.5 396.6 529.3
Unfunded status at end of year (23.3) (37.2)  
Health Care Benefits      
Change in benefit obligation:      
Projected benefit obligation - beginning of year 5.9 15.8  
Service cost 0.0 0.0 0.1
Interest cost 0.3 0.4 0.5
Actuarial loss / (gain) (1.0) (2.9)  
Benefits paid (0.9) (1.0)  
Other 0.1 (6.5)  
Projected benefit obligation - end of year 4.4 5.9 15.8
Projected salary increases 0.0 0.0  
Accumulated benefit obligation 4.4 5.9  
Change in plan assets:      
Plan assets - beginning of year 0.0 0.0  
Actual return on plan assets 0.0 0.0  
Company contributions 0.9 1.0  
Benefits paid (0.9) (1.0)  
Other 0.0 0.0  
Plan assets - end of year 0.0 0.0 $ 0.0
Unfunded status at end of year $ (4.4) $ (5.9)