Summary of Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2016	Apr. 04, 2015	Jan. 02, 2016
Summary Of Accounting Policies [Line Items]
Long-term deferred income tax assets	$ 49.6		$ 60.4
Deferred Tax Liabilities Non Current [Member]
Summary Of Accounting Policies [Line Items]
Current deferred income tax assets			109.9
Long-term deferred income tax assets			45.9
Current deferred income tax liabilities			0.3
Unconsolidated Affiliates [Member]
Summary Of Accounting Policies [Line Items]
Investments in unconsolidated affiliates	14.1		$ 13.3
Purchases from unconsolidated affiliates	$ 4.2	$ 3.9
Minimum [Member] | Unconsolidated Affiliates [Member]
Summary Of Accounting Policies [Line Items]
Percentage of ownership interest under equity method accounting	20.00%
Maximum [Member] | Unconsolidated Affiliates [Member]
Summary Of Accounting Policies [Line Items]
Percentage of ownership interest under equity method accounting	50.00%