Summary of Significant Accounting Policies - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 30, 2017 USD ($) Customer Contract	Dec. 31, 2016 USD ($) Customer Contract	Dec. 26, 2015 USD ($)
Significant Accounting Policies [Line Items]
Highly liquid short-term investments maturity date	three months or less
Sale of accounts receivable	$ 582.9	$ 521.9	$ 519.2
Additional receivables outstanding if receivables had not been sold	380.8	338.3
Factoring costs associated with the sales of accounts receivable	11.4	8.9	7.2
Long-term core inventory	20.2	18.5
Total book value of equity method investments	21.1
Income from equity method investments	3.3
Accrued customer rebates	6.8	7.3
Product warranty reserves	$ 0.5	$ 0.5
Number of largest customers | Customer	5	5
Number of foreign exchange forward contracts outstanding | Contract	0	0
Credit Concentration Risk [Member]
Significant Accounting Policies [Line Items]
Concentration risk percentage	85.00%	87.00%
Supplier Concentration Risk [Member]
Significant Accounting Policies [Line Items]
Concentration risk percentage	71.00%
Selling, General and Administrative Expenses [Member]
Significant Accounting Policies [Line Items]
Research and development costs	$ 20.0	$ 18.9	$ 16.8
Minimum [Member]
Significant Accounting Policies [Line Items]
Estimated useful life of Property, Plant and Equipment	3 years
Maximum [Member]
Significant Accounting Policies [Line Items]
Estimated useful life of Property, Plant and Equipment	39 years