INVENTORIES (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Mar. 31, 2015
Inventory [Line Items]
Raw materials	$ 93,446	$ 73,168
Work-in-process	1,597,632	1,305,390
Finished goods	124,609	91,639
Less: unliquidated progress payments	(154,414)	(189,923)
Total inventories	1,661,273	1,280,274
Preproduction Costs Related to Long-term Supply Arrangements, Costs Capitalized	478,163	306,983
Bombardier [Member]
Inventory [Line Items]
Preproduction Costs Related to Long-term Supply Arrangements, Costs Capitalized	343,366	238,871
Embraer [Member]
Inventory [Line Items]
Preproduction Costs Related to Long-term Supply Arrangements, Costs Capitalized	$ 134,797	$ 68,112