Investments (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018	Dec. 31, 2018
Other (income) expense, net
Schedule of Equity Method Investments [Line Items]
Equity securities, fair value method, other expense (income)		$ 1.8	$ 6.3	$ 7.9	$ 10.6
Equity securities, equity method, other expense (income)		(1.0)	(0.9)	(1.7)	$ (0.7)
Prepaid expenses and other current assets
Schedule of Equity Method Investments [Line Items]
Equity securities, fair value method		2.8		2.8		$ 9.4
Other non-current assets
Schedule of Equity Method Investments [Line Items]
Equity securities, fair value method	[1]	2.8		2.8		4.4
Equity securities, equity method, other non-current assets		$ 16.8		$ 16.8		$ 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.