Investments (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018	Dec. 31, 2018
Other (income) expense, net
Schedule of Equity Method Investments [Line Items]
Equity securities, fair value method, other expense (income)		$ 0.9	$ 0.9	$ 8.8	$ 11.6
Equity securities, equity method, other expense (income)		(0.3)	$ (1.0)	(2.1)	(1.6)
Prepaid expenses and other current assets
Schedule of Equity Method Investments [Line Items]
Equity securities, fair value method		2.6		2.6		$ 9.4
Other non-current assets
Schedule of Equity Method Investments [Line Items]
Equity securities, fair value method	[1]	2.3		2.3		4.4
Equity securities, equity method, other non-current assets		$ 17.2		$ 17.2		$ 15.1
Zibo Xinhua
Schedule of Equity Method Investments [Line Items]
Increase in investment in Zibo Xinhua					$ 7.5

[1] (1) Measured at fair value using the Net Asset Value practical expedient.