XML 61 R50.htm IDEA: XBRL DOCUMENT v3.19.1
Pension and Postretirement Benefits - Components of Net Periodic Benefit Expense (Detail) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Pension Plans    
Defined Benefit Plan Disclosure [Line Items]    
Service cost $ 0.7 $ 0.8
Interest cost 66.7 64.0
Expected return on plan assets (81.2) (87.2)
Amortization of prior service benefit (1.2) (1.5)
Recognized net actuarial loss 37.6 42.1
Net periodic pension expense (benefit)/postretirement benefit expense 22.6 18.2
Pension Plans | U.S. Plans    
Defined Benefit Plan Disclosure [Line Items]    
Service cost 0.0 0.0
Interest cost 49.2 46.6
Expected return on plan assets (54.5) (57.6)
Amortization of prior service benefit (0.6) (0.6)
Recognized net actuarial loss 28.9 31.2
Net periodic pension expense (benefit)/postretirement benefit expense 23.0 19.6
Pension Plans | International Plans    
Defined Benefit Plan Disclosure [Line Items]    
Service cost 0.7 0.8
Interest cost 17.5 17.4
Expected return on plan assets (26.7) (29.6)
Amortization of prior service benefit (0.6) (0.9)
Recognized net actuarial loss 8.7 10.9
Net periodic pension expense (benefit)/postretirement benefit expense (0.4) (1.4)
Postretirement Benefit Plans    
Defined Benefit Plan Disclosure [Line Items]    
Service cost 0.1 0.2
Interest cost 1.2 1.2
Expected return on plan assets (0.1) (0.1)
Amortization of prior service benefit (0.4) (0.5)
Recognized net actuarial loss 0.1 0.3
Net periodic pension expense (benefit)/postretirement benefit expense $ 0.9 $ 1.1