Revenue - Schedule of Contract Assets and Liabilities (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Contract assets	$ 56.1	$ 69.4
Contract liabilities	13.1	13.7
Net contract assets	43.0	$ 55.7
$ Change
Contract assets	(13.3)
Contract liabilities	(0.6)
Net contract assets	$ 12.7
% Change
Contract assets	(19.20%)
Contract liabilities	(4.40%)
Net contract assets	(22.80%)