Schedule II - Valuation and Qualifying Accounts (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	$ (125.3)	$ (6.9)	$ (2.6)
Reduction in Sales	0.1
Charged to Costs and Expenses	(34.2)	(73.5)	(15.2)
Charged to Other Accounts	17.0	(44.4)	12.2
Deductions	4.0	(0.5)	(1.3)
Balance at End of Year	(138.4)	(125.3)	(6.9)
Accounts Receivables [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	(6.3)	(5.6)	(1.6)
Reduction in Sales	0.1
Charged to Costs and Expenses	(16.2)	(12.1)	(14.8)
Charged to Other Accounts	10.8	12.0	12.2
Deductions	3.8	(0.6)	(1.4)
Balance at End of Year	(7.8)	(6.3)	(5.6)
Inventories [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	(1.3)	(0.1)	(0.1)
Charged to Costs and Expenses	(0.4)	(0.1)	(0.1)
Charged to Other Accounts		(1.2)
Deductions	0.2	0.1	0.1
Balance at End of Year	(1.5)	(1.3)	(0.1)
Deferred Tax Assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	(117.7)	(1.2)	(0.9)
Charged to Costs and Expenses	(17.6)	(61.3)	(0.3)
Charged to Other Accounts	6.2	(55.2)
Balance at End of Year	$ (129.1)	$ (117.7)	$ (1.2)