Summary of Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Oct. 03, 2015	Sep. 27, 2014	Jan. 03, 2015
Summary Of Accounting Policies [Line Items]
Purchases from unconsolidated affiliates	$ 2.7	$ 3.5	$ 10.4	$ 10.9
Unconsolidated Affiliates [Member]
Summary Of Accounting Policies [Line Items]
Investments in unconsolidated affiliates	$ 13.6		$ 13.6		$ 13.3
Minimum [Member] | Unconsolidated Affiliates [Member]
Summary Of Accounting Policies [Line Items]
Percentage of ownership interest under equity method accounting	20.00%		20.00%
Maximum [Member] | Unconsolidated Affiliates [Member]
Summary Of Accounting Policies [Line Items]
Percentage of ownership interest under equity method accounting	50.00%		50.00%