Acquisition - Consideration Paid (Details) - USD ($) $ in Millions			3 Months Ended
	Feb. 28, 2019	Feb. 27, 2019	Mar. 31, 2019	Apr. 01, 2018
Business Acquisition [Line Items]
Cash paid			$ 17.7	$ 0.0
Deferred purchase consideration			15.3	0.0
Total consideration	$ 60.0		$ 60.0	$ 0.0
FTT
Business Acquisition [Line Items]
Cash paid	$ 17.7	$ 20.7
Deferred purchase consideration		15.3
Common stock issued		27.0
Total		63.0
Less: Cash acquired		(3.0)
Total consideration		$ 60.0