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Employee Benefit Plans - Schedule of Plans for which Accumulated Benefit Obligations Exceeds Plan Assets (Detail) - USD ($)
$ in Millions
Dec. 31, 2015
Dec. 31, 2014
U.S. Defined Benefit Pension Plans    
Plans for which the ABO exceeds plan assets:    
Projected benefit obligations $ 66.6 $ 70.2
Accumulated benefit obligations 66.6 70.2
Fair value of plan assets 47.6 53.6
Foreign Pension Plan Defined Benefit    
Plans for which the ABO exceeds plan assets:    
Projected benefit obligations 518.1 632.6
Accumulated benefit obligations 498.7 603.4
Fair value of plan assets $ 321.6 $ 401.2