Segment and Disaggregated Revenue Information - Other expense, net by Type (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
Restructuring charges:
Restructuring charges			$ 41.7
Other items:
Transaction and related costs	$ 0.7		3.2
Gain on sale of assets				$ (3.2)
Other expense, net	40.0	$ 7.5	44.9	15.0
Severance and related costs
Restructuring charges:
Restructuring charges	37.5	6.1	39.9	16.5
Asset impairment charges and lease cancellation costs
Restructuring charges:
Restructuring charges	$ 1.8	$ 1.4	$ 1.8	$ 1.7