Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Jan. 02, 2021	Dec. 28, 2019
Deferred tax assets
Capital loss carryforwards	$ 54.8
Continued Operations
Deferred tax assets
Net operating loss carryforwards	196.4	$ 133.6
Capital loss carryforwards	14.5	12.0
Liabilities and reserves	32.0	25.7
Stock options	10.7	8.0
Inventories	2.4	3.4
Interest expense	9.8	11.3
Right of use lease obligations	50.7	44.6
Deferred tax assets, gross	316.5	238.6
Deferred tax liabilities
Property, plant and equipment	(65.0)	(63.7)
Intangible assets	(191.8)	(101.0)
Right of use assets	(50.1)	(43.2)
Other	(0.7)	(1.0)
Deferred tax liabilities	(307.6)	(208.9)
Valuation allowance	(156.5)	(120.3)
Net deferred tax liability	$ (147.6)	$ (90.6)