Acquisitions - Allocation of Purchase Price to Fair Value of Assets Acquired and Liabilities Assumed (Detail) € in Millions, $ in Millions	Dec. 31, 2016 USD ($)	Aug. 11, 2016 USD ($)	Aug. 02, 2016 USD ($)	Aug. 02, 2016 EUR (€)	Apr. 11, 2016 USD ($)	Jan. 04, 2016 USD ($)	Jan. 02, 2016 USD ($)	Jan. 03, 2015 USD ($)
Business Acquisition [Line Items]
Goodwill	$ 1,175.4						$ 759.6	$ 743.6
S&D Acquisition [Member]
Business Acquisition [Line Items]
Cash	1.7				$ 1.7
Accounts receivable	51.4				49.8
Inventories	62.5				61.0
Prepaid expenses and other assets	2.3				2.3
Property, plant & equipment	92.9				94.6
Goodwill	117.1				127.5
Intangible assets	119.0				111.9
Other assets	2.2				2.2
Accounts payable and accrued liabilities	(46.7)				(44.9)
Deferred tax liabilities	(43.3)				(51.5)
Other long-term liabilities	(5.5)				(0.5)
Total	353.6	$ 353.6			$ 354.1
Eden Acquisition [Member]
Business Acquisition [Line Items]
Cash	19.6		$ 19.6	€ 17.5
Accounts receivable	95.4		104.3
Inventories	17.7		23.7
Prepaid expenses and other assets	6.2		7.3
Property, plant & equipment	107.1		98.4
Goodwill	299.7		277.2
Intangible assets	213.2		219.2
Other assets	2.8		8.0
Deferred tax assets	19.5		18.2
Current maturities of long-term debt	(2.7)		(2.7)
Accounts payable and accrued liabilities	(128.3)		(129.5)
Long-term debt	(3.1)		(3.1)
Deferred tax liabilities	(49.5)		(55.1)
Other long-term liabilities	(21.3)		(7.0)
Total	576.3		$ 578.5
Aquaterra Corporation [Member]
Business Acquisition [Line Items]
Cash	1.3					$ 1.3
Accounts receivable	7.1					6.2
Inventories	2.1					2.1
Prepaid expenses and other assets	0.4					1.3
Property, plant & equipment	12.3					13.4
Goodwill	21.2					19.2
Intangible assets	15.8					16.6
Other assets	0.8					0.8
Accounts payable and accrued liabilities	(16.3)					(15.8)
Long-term debt	(0.4)					(0.3)
Other long-term liabilities	(0.3)					(0.3)
Total	44.0					$ 44.5
Scenario, Adjustment [Member] | S&D Acquisition [Member]
Business Acquisition [Line Items]
Accounts receivable	1.6
Inventories	1.5
Property, plant & equipment	(1.7)
Goodwill	(10.4)
Intangible assets	7.1
Accounts payable and accrued liabilities	(1.8)
Deferred tax liabilities	8.2
Other long-term liabilities	(5.0)
Total	(0.5)
Scenario, Adjustment [Member] | Eden Acquisition [Member]
Business Acquisition [Line Items]
Accounts receivable	(8.9)
Inventories	(6.0)
Prepaid expenses and other assets	(1.1)
Property, plant & equipment	8.7
Goodwill	22.5
Intangible assets	(6.0)
Other assets	(5.2)
Deferred tax assets	1.3
Accounts payable and accrued liabilities	1.2
Deferred tax liabilities	5.6
Other long-term liabilities	(14.3)
Total	(2.2)
Scenario, Adjustment [Member] | Aquaterra Corporation [Member]
Business Acquisition [Line Items]
Accounts receivable	0.9
Prepaid expenses and other assets	(0.9)
Property, plant & equipment	(1.1)
Goodwill	2.0
Intangible assets	(0.8)
Accounts payable and accrued liabilities	(0.5)
Long-term debt	(0.1)
Total	$ (0.5)