XML 82 R69.htm IDEA: XBRL DOCUMENT v3.8.0.1
Employee Benefit and Retirement Plans - Summary of Components of Pension and Postretirement Benefits Expense (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
U.S. [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 0.6 $ 0.6 $ 2.0 $ 2.0
Interest cost 12.6 12.2 37.9 32.3
Expected return on plan assets (18.3) (18.8) (55.0) (49.4)
Amortization, net 6.0 5.5 17.8 16.3
Net periodic cost 0.9 (0.5) 2.7 1.2
International [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 1.9 1.9 5.6 5.0
Interest cost 3.4 4.7 10.1 14.2
Expected return on plan assets (4.7) (5.7) (13.9) (17.0)
Amortization, net 0.7 3.5 1.9 4.9
Net periodic cost 1.3 4.4 3.7 7.1
Postretirement Benefits [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Service cost   0.1 0.1 0.1
Interest cost 0.5 0.6 1.6 1.6
Amortization, net (2.2) (2.7) (6.8) (7.9)
Net periodic cost $ (1.7) $ (2.0) $ (5.1) $ (6.2)