The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Goodwill and Intangible Assets - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 29, 2020	Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, amortization expense, next 12 months		$ 6.7
Finite-lived intangible assets, amortization expense, year 2		6.5
Finite-lived intangible assets, amortization expense, year 3		6.5
Finite-lived intangible assets, amortization expense, year 4		6.2
Finite-lived intangible assets, amortization expense, year 5		6.2
Goodwill impairment charge	$ 147.7	147.7	$ 0.0	$ 0.0
Selling, General and Administrative Expenses
Finite-Lived Intangible Assets [Line Items]
Amortization expense		$ 6.8	$ 5.4	$ 1.8