v3.10.0.1

Revenue Details Textual (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 28, 2018	Sep. 29, 2017	Sep. 28, 2018	Sep. 29, 2017	Dec. 31, 2017	Dec. 31, 2016
Costs in Excess of Billings	$ 185.2		$ 185.2		$ 203.9
Billings in Excess of Cost	77.2		77.2		94.2
Contract with Customer, Liability, Revenue Recognized	$ 5.9	$ 9.0	$ 103.8	$ 106.7
Percentage of Revenue related to Long-term contract	16.10%	49.20%	67.50%	71.20%
Contract with Customer, Liability	$ 143.7	$ 121.9	$ 143.7	$ 121.9	$ 133.3	$ 137.6
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-01-01
Revenue remaining performance obligation percentage recognized	43.00%		43.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01
Revenue remaining performance obligation percentage recognized	57.00%		57.00%

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