Fair Value of Financial Instruments - Narrative (Details) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 28, 2020 USD ($)	Jun. 28, 2020 USD ($)	Jun. 27, 2021 company
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Loss on available for sale investments, fair value option	$ (0.8)	$ (1.2)
Number of companies quoted on an active public market | company			1
Fair Value, Recurring
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Available-for-sale investments, elected fair value option	$ 12.8	$ 12.8