Receivables - Rollforward of Combined Allowances for Doubtful Accounts Related to Trade and Other Accounts Receivable (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Receivables [Abstract]
Balance at Beginning of Year	$ 66.5	$ 59.3	$ 52.4
Expenses	65.1	51.5	45.1
Deductions	(55.9)	(44.3)	(38.2)
Balance at End of Year	$ 75.7	$ 66.5	$ 59.3