XML 100 R91.htm IDEA: XBRL DOCUMENT v3.22.2.2
Defined Benefit Pension Plans and Other Post-Employment Benefit Plans - Net Period Benefit Costs (Income) for Post-retirement Employee Benefit Plans (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Defined Benefit Plan Disclosure [Line Items]        
Interest cost $ 3.9 $ 3.1 $ 12.0 $ 9.2
Amortization of net prior service credit 0.1 0.1 0.2 0.2
Amortization of net actuarial gain 1.5 2.0 4.2 5.8
Net periodic (income) cost (0.5) (0.4) (1.8) (1.4)
Other employee benefit plans        
Defined Benefit Plan Disclosure [Line Items]        
Interest cost 0.2 0.1 0.6 0.4
Amortization of net prior service credit 0.0 0.0 (0.2) (0.2)
Amortization of net actuarial gain (0.1) 0.0 (0.1) (0.1)
Net periodic (income) cost $ 0.1 $ 0.1 $ 0.3 $ 0.1