Income Taxes - Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets
Accrued liabilities and reserves	$ 168.7	$ 200.3
Pension and other post-retirement benefits	53.2	68.4
Employee compensation & benefits	102.7	100.0
Tax loss and credit carryforwards	392.8	291.9
Total deferred tax assets	717.4	660.6
Valuation allowance	362.5	235.8
Deferred tax assets, net of valuation allowance	354.9	424.8
Deferred tax liabilities
Property, plant and equipment	58.1	51.6
Goodwill and other intangibles	942.4	645.6
Other liabilities	39.1	28.6
Deferred Tax Liabilities, Gross	1,039.6	725.8
Total deferred tax liabilities	$ 684.7	$ 301.0