Acquisitions - Purchase Price Allocation (Details) - USD ($) $ in Millions	10 Months Ended	12 Months Ended
	Jan. 02, 2021	Jan. 02, 2021	Dec. 28, 2019	Mar. 02, 2020	Dec. 29, 2018
Business Acquisition [Line Items]
Measurement Period Adjustments, Accounts receivable	$ (0.3)
Goodwill	1,284.3	$ 1,284.3	$ 1,047.5		$ 1,026.1
Measurement Period Adjustments, Goodwill		(35.9)	$ (3.1)
Legacy Primo Acquisition
Business Acquisition [Line Items]
Cash and cash equivalents	1.3	1.3		$ 1.3
Accounts receivable	21.6	21.6		21.9
Inventory	18.4	18.4		12.7
Measurement Period Adjustments, Inventory	5.7
Prepaid expenses and other current assets	5.3	5.3		4.3
Measurement Period Adjustments, Prepaid expenses and other current assets	1.0
Property, plant and equipment	107.8	107.8		119.0
Measurement Period Adjustments, Property, plant and equipment	(11.2)
Operating lease right-of-use-assets	4.3	4.3		4.9
Measurement Period Adjustments, Operating lease right-of-use assets	(0.6)
Goodwill	301.2	301.2		337.4
Measurement Period Adjustments, Goodwill	(36.2)
Intangible assets	421.6	421.6		361.3
Measurement Period Adjustments, Intangible assets	60.3
Other assets	0.4	0.4		3.9
Measurement Period Adjustments, Other assets	(3.5)
Current maturities of long-term debt	(2.3)	(2.3)		(2.2)
Measurement Period Adjustments, Current maturities of long-term debt	(0.1)
Accounts payable and accrued liabilities	(42.0)	(42.0)		(41.6)
Measurement Period Adjustments, Accounts payable and accrued liabilities	(0.4)
Current operating lease obligations	(1.4)	(1.4)		(1.8)
Measurement Period Adjustments, Current operating lease obligations	0.4
Long-term debt	(5.6)	(5.6)		(5.8)
Measurement Period Adjustments, Long-term debt	0.2
Operating lease obligations	(3.0)	(3.0)		(3.1)
Measurement Period Adjustments, Operating lease obligations	0.1
Deferred tax liabilities	(27.6)	(27.6)		(11.7)
Measurement Period Adjustments, Deferred tax liabilities	(15.9)
Other long-term liabilities	(1.8)	(1.8)		(2.3)
Measurement Period Adjustments, Other long-term liabilities	0.5
Total	798.2	$ 798.2		$ 798.2
Measurement Period Adjustments, Total	$ 0.0