Income Taxes - Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets
Accrued liabilities and reserves	$ 83.2	$ 70.2
Pension and other post-retirement benefits	48.9	44.5
Employee compensation and benefits	76.6	78.3
Tax loss and credit carryforwards	391.0	293.8
Total deferred tax assets	599.7	486.8
Valuation allowance	380.8	286.5
Deferred tax assets, net of valuation allowance	218.9	200.3
Deferred tax liabilities
Property, plant and equipment	23.6	23.9
Goodwill and other intangibles	733.7	774.2
Other liabilities	32.1	35.8
Deferred Tax Liabilities, Gross	789.4	833.9
Total deferred tax liabilities	$ 570.5	$ 633.6