Profit Sharing, Retirement Savings Plans and Defined Benefit Pension Plans - Amounts in Accumulated Other Comprehensive Loss Expected to be Recognized as Components of Benefit Costs (Detail) $ in Millions	Dec. 31, 2018 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Unrecognized prior service costs	$ 0.2
Unrecognized net actuarial loss	5.1
Total	5.3
U.S. | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Unrecognized prior service costs	0.0
Unrecognized net actuarial loss	1.4
Total	1.4
International | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Unrecognized prior service costs	0.2
Unrecognized net actuarial loss	3.7
Total	$ 3.9