SUPPLEMENTAL GUARANTOR AND NON-GUARANTOR CONDENSED CONSOLIDATING FINANCIAL STATEMENTS (Details 5) - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Condensed consolidating statements of cash flows
Net cash provided by (used in) operating activities	$ 939,772	$ 669,424
Cash flows from investing activities:
Purchases of property and equipment, net of proceeds from disposal	(413,934)	(164,394)
Acquisition and divestiture of businesses, net of cash acquired and cash held in divested business	(900,242)	(58,132)
Investing cash flows to affiliates	0	0
Other investing activities, net	1,397	(11,517)
Net cash used in investing activities	(1,312,779)	(234,043)
Cash flows from financing activities:
Proceeds from bank borrowings and long-term debt	755,684	234,523
Repayments of bank borrowings and long-term debt	(40,706)	(251,337)
Payments for repurchases of ordinary shares	(331,690)	(290,752)
Net proceeds from issuance of ordinary shares	52,950	12,341
Financing cash flows from (to) affiliates	0	0
Other financing activities, net	(49,742)	(29,135)
Net cash provided by (used in) financing activities	386,496	(324,360)
Effect of exchange rates on cash and cash equivalents	(7,703)	2,472
Net increase in cash and cash equivalents	5,786	113,493
Cash and cash equivalents, beginning of period	1,628,408	1,593,728
Cash and cash equivalents, end of period	1,634,194	1,707,221
Reportable legal entities | Parent
Condensed consolidating statements of cash flows
Net cash provided by (used in) operating activities	343,182	(4,319)
Cash flows from investing activities:
Purchases of property and equipment, net of proceeds from disposal	0	0
Acquisition and divestiture of businesses, net of cash acquired and cash held in divested business	0	0
Investing cash flows to affiliates	(1,099,775)	(1,163,617)
Other investing activities, net	(2,046)	(1,500)
Net cash used in investing activities	(1,101,821)	(1,165,117)
Cash flows from financing activities:
Proceeds from bank borrowings and long-term debt	695,309	223,000
Repayments of bank borrowings and long-term debt	(35,638)	(245,500)
Payments for repurchases of ordinary shares	(331,690)	(290,752)
Net proceeds from issuance of ordinary shares	52,950	12,341
Financing cash flows from (to) affiliates	632,750	1,575,271
Other financing activities, net	0	0
Net cash provided by (used in) financing activities	1,013,681	1,274,360
Effect of exchange rates on cash and cash equivalents	4,101	(137,117)
Net increase in cash and cash equivalents	259,143	(32,193)
Cash and cash equivalents, beginning of period	608,971	638,714
Cash and cash equivalents, end of period	868,114	606,521
Reportable legal entities | Guarantor Subsidiaries
Condensed consolidating statements of cash flows
Net cash provided by (used in) operating activities	(92,821)	11,083
Cash flows from investing activities:
Purchases of property and equipment, net of proceeds from disposal	(128,011)	(76,042)
Acquisition and divestiture of businesses, net of cash acquired and cash held in divested business	(809,233)	(20,092)
Investing cash flows to affiliates	(994,387)	(2,257,892)
Other investing activities, net	(23,270)	(10,597)
Net cash used in investing activities	(1,954,901)	(2,364,623)
Cash flows from financing activities:
Proceeds from bank borrowings and long-term debt	0	0
Repayments of bank borrowings and long-term debt	(1,333)	(1,686)
Payments for repurchases of ordinary shares	0	0
Net proceeds from issuance of ordinary shares	0	0
Financing cash flows from (to) affiliates	2,065,092	2,340,819
Other financing activities, net	0	0
Net cash provided by (used in) financing activities	2,063,759	2,339,133
Effect of exchange rates on cash and cash equivalents	4,231	(5,893)
Net increase in cash and cash equivalents	20,268	(20,300)
Cash and cash equivalents, beginning of period	168,272	210,462
Cash and cash equivalents, end of period	188,540	190,162
Reportable legal entities | Non-Guarantor Subsidiaries
Condensed consolidating statements of cash flows
Net cash provided by (used in) operating activities	689,411	662,660
Cash flows from investing activities:
Purchases of property and equipment, net of proceeds from disposal	(285,928)	(88,340)
Acquisition and divestiture of businesses, net of cash acquired and cash held in divested business	(91,009)	(38,040)
Investing cash flows to affiliates	(944,200)	370,504
Other investing activities, net	26,713	580
Net cash used in investing activities	(1,294,424)	244,704
Cash flows from financing activities:
Proceeds from bank borrowings and long-term debt	60,375	11,523
Repayments of bank borrowings and long-term debt	(3,735)	(4,151)
Payments for repurchases of ordinary shares	0	0
Net proceeds from issuance of ordinary shares	0	0
Financing cash flows from (to) affiliates	340,525	(865,097)
Other financing activities, net	(49,742)	(29,135)
Net cash provided by (used in) financing activities	347,423	(886,860)
Effect of exchange rates on cash and cash equivalents	(16,035)	145,482
Net increase in cash and cash equivalents	(273,625)	165,986
Cash and cash equivalents, beginning of period	851,165	744,552
Cash and cash equivalents, end of period	$ 577,540	910,538
Eliminations
Condensed consolidating statements of cash flows
Net cash provided by (used in) operating activities		0
Cash flows from investing activities:
Purchases of property and equipment, net of proceeds from disposal	$ 5	(12)
Acquisition and divestiture of businesses, net of cash acquired and cash held in divested business	0	0
Investing cash flows to affiliates	3,038,362	$ 3,051,005
Other investing activities, net	0
Net cash used in investing activities	3,038,367	$ 3,050,993
Cash flows from financing activities:
Proceeds from bank borrowings and long-term debt	0	0
Repayments of bank borrowings and long-term debt	0	0
Payments for repurchases of ordinary shares	0	0
Net proceeds from issuance of ordinary shares	0	0
Financing cash flows from (to) affiliates	(3,038,367)	(3,050,993)
Other financing activities, net	0	0
Net cash provided by (used in) financing activities	(3,038,367)	(3,050,993)
Effect of exchange rates on cash and cash equivalents	0	0
Net increase in cash and cash equivalents	0	0
Cash and cash equivalents, beginning of period	0	0
Cash and cash equivalents, end of period	$ 0	$ 0