GOODWILL AND INTANGIBLE ASSETS - CHANGES IN CARRYING AMOUNT (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 813.2	$ 840.4
Effect of foreign currency translation and other	(14.5)	(27.2)
Goodwill, Ending Balance	798.7	813.2
Commercial Aircraft
Goodwill [Line Items]
Goodwill, Beginning Balance	372.6	379.8
Effect of foreign currency translation and other	(4.8)	(7.2)
Goodwill, Ending Balance	367.8	372.6
Business Jet
Goodwill [Line Items]
Goodwill, Beginning Balance	440.6	460.6
Effect of foreign currency translation and other	(9.7)	(20.0)
Goodwill, Ending Balance	$ 430.9	$ 440.6