Leases, Cash Flow and Balance Sheet Information (Details) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 28, 2019 USD ($)	Jun. 28, 2019 USD ($)
Leases [Abstract]
Operating lease expense	$ 9.2	$ 19.0
Short-term lease expense and other	4.8	9.4
Total lease expense	14.0	28.4
Operating cash flows from operating leases		18.7
Right-of-use assets obtained in exchange for Operating lease liabilities:		29.1
Operating lease right-of-use assets	133.6	133.6
Other current liabilities	28.4	28.4
Operating lease liabilities	109.1	109.1
Total operating lease liabilities	$ 137.5	$ 137.5
Weighted-average discount rate	4.47%	4.47%
Weighted-average remaining lease term	6 years	6 years