Schedule II - Valuation and Qualifying Accounts (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period		$ 57.4	$ 61.7	$ 52.4
Charged to costs and expense		99.2	124.9	121.0
Charged to other accounts		0.0	0.0	0.0
Deductions		113.6	129.2	111.7
Balance at end of period		43.0	57.4	61.7
Allowance for doubtful accounts [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period		17.2	21.8	20.6
Charged to costs and expense		18.1	23.6	20.4
Charged to other accounts		0.0	0.0	0.0
Deductions	[1]	21.1	28.2	19.2
Balance at end of period		14.2	17.2	21.8
Allowance for sales returns [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period		16.3	16.3	15.9
Charged to costs and expense		52.6	64.4	62.6
Charged to other accounts		0.0	0.0	0.0
Deductions	[2]	56.3	64.4	62.2
Balance at end of period		12.6	16.3	16.3
Allowance for cash discounts [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period		5.9	6.3	4.5
Charged to costs and expense		17.9	21.0	21.1
Charged to other accounts		0.0	0.0	0.0
Deductions	[3]	19.1	21.4	19.3
Balance at end of period		4.7	5.9	6.3
Inventory valuation allowances [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period		18.0	17.3	11.4
Charged to costs and expense		10.6	15.9	16.9
Charged to other accounts		0.0	0.0	0.0
Deductions	[4]	17.1	15.2	11.0
Balance at end of period		$ 11.5	$ 18.0	$ 17.3

[1] Accounts charged off, net of recoveries.

[2] Actual customer returns.

[3] Discounts given to customers.

[4] Adjustment upon disposal of related inventories.