SUPPLEMENTAL CASH FLOW DISCLOSURES (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Net cash paid for:
Interest	$ 127,346	$ 114,578	$ 87,179
Income taxes	86,651	105,453	70,621
Non-cash investing and financing activity:
Unpaid purchases of property and equipment	84,375	93,310	115,757
Customer-related third party banking institution equipment financing net settlement	$ 90,576	$ 0	$ 0