Revenue - Revenue Performance Obligations (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 29, 2019	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Performance obligations timing	Our contracts are multi-year contracts and typically include an initial period of one year or less with annual one-year (or less) option periods
Increase in remaining performance obligations	$ 619.7
Performance Obligations	$ 1,478.0	$ 858.0