Income Taxes - Deferred Income Tax Assets and Liabilities (Detail) - USD ($) $ in Millions	Dec. 30, 2017	Dec. 31, 2016
Deferred tax assets
Capital loss carryforwards	$ 17.8
Outside basis differences on discontinued operations	3.8
Deferred tax liabilities
Valuation allowance	(129.1)	$ (117.7)
Continued Operations [Member]
Deferred tax assets
Net operating loss carryforwards	181.6	204.1
Capital loss carryforwards	4.5	1.1
Liabilities and reserves	35.7	42.5
Stock options	7.0	5.5
Inventories	4.5	5.2
Interest expense	25.4	31.1
Outside basis differences on discontinued operations	3.8
Other	4.9	9.4
Deferred tax assets, gross	267.4	298.9
Deferred tax liabilities
Property, plant & equipment	(69.2)	(104.5)
Intangible assets	(165.2)	(231.7)
Deferred tax liabilities	(234.4)	(336.2)
Valuation allowance	(129.1)	(117.7)
Net deferred tax liability	$ (96.1)	$ (155.0)