Revision of Previously Reported Financial Information - Summary of Revised Previously Issued Consolidated Statements of Cash Flows (Detail) - USD ($) $ in Millions	3 Months Ended			6 Months Ended	9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Jul. 02, 2016	Jul. 02, 2016	Sep. 30, 2017	Oct. 01, 2016
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Other non-cash items	$ (8.4)	$ 8.5	$ 1.3	$ (0.4)	$ (13.2)	$ 7.7
Accounts payable and accrued liabilities and other liabilities	24.0	(6.8)	43.3	6.9	58.5	(14.4)
Net cash provided by operating activities	46.2	51.1	85.0	63.4	138.7	71.9
Additions to property, plant & equipment	(38.2)	(32.4)	(31.9)	(58.5)	(97.1)	(69.3)
Other investing activities	0.5				0.9
Net cash used in investing activities	(41.4)	(944.8)	(34.5)	(105.1)	(129.6)	(1,028.8)
Issuance of long-term debt			498.7	498.7	750.0	498.7
Net cash provided by financing activities	(6.7)	(30.6)	646.2	717.4	605.7	816.4
Effect of exchange rate changes on cash	2.0	(4.0)	0.8	(0.2)	6.4	(4.2)
Net increase (decrease) in cash, cash equivalents and restricted cash	25.0	(633.7)	697.5	675.5	30.1	41.8
Cash & cash equivalents, beginning of period		752.6	55.1	77.1		77.1
Cash, cash equivalents and restricted cash, end of period			752.6	752.6
Supplemental Non-cash Investing and Financing Activities:
Additions to property, plant & equipment through accounts payable and accrued liabilities	$ 6.8	5.8	11.5	15.6	$ 6.9	7.1
As Previously Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Other non-cash items			2.6	0.9
Accounts payable and accrued liabilities and other liabilities			44.6	11.1
Net cash provided by operating activities			87.6	68.9
Additions to property, plant & equipment			(33.2)	(62.7)
Other investing activities			(2.8)	(2.8)
Net cash used in investing activities			(38.6)	(112.1)
Net cash provided by financing activities			147.5	218.7
Effect of exchange rate changes on cash			(2.1)	(3.1)
Net increase (decrease) in cash, cash equivalents and restricted cash			194.4	172.4
Cash & cash equivalents, beginning of period		249.5	55.1	77.1		$ 77.1
Cash, cash equivalents and restricted cash, end of period			249.5	249.5
Supplemental Non-cash Investing and Financing Activities:
Long-term debt funded to escrow			498.7	498.7
Additions to property, plant & equipment through accounts payable and accrued liabilities			10.2	11.4
Adjustments [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Other non-cash items			(1.3)	(1.3)
Accounts payable and accrued liabilities and other liabilities			(1.3)	(4.2)
Net cash provided by operating activities			(2.6)	(5.5)
Additions to property, plant & equipment			1.3	4.2
Other investing activities			2.8	2.8
Net cash used in investing activities			4.1	7.0
Issuance of long-term debt			498.7	498.7
Net cash provided by financing activities			498.7	498.7
Effect of exchange rate changes on cash			2.9	2.9
Net increase (decrease) in cash, cash equivalents and restricted cash			503.1	503.1
Cash & cash equivalents, beginning of period		$ 503.1
Cash, cash equivalents and restricted cash, end of period			503.1	503.1
Supplemental Non-cash Investing and Financing Activities:
Long-term debt funded to escrow			(498.7)	(498.7)
Additions to property, plant & equipment through accounts payable and accrued liabilities			$ 1.3	$ 4.2