CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Operating activities:
Net loss	$ (186,034)	$ (123,329)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities :
Amortization and impairment of software development costs and licenses	84,161	142,286
Depreciation and amortization	6,424	5,319
Loss from discontinued operations	55	120
Amortization and impairment of intellectual property	3,042	4,944
Stock-based compensation	21,266	14,097
Deferred income taxes	(6,105)	(9)
Amortization of discount on Convertible Notes	12,296	9,199
Amortization of debt issuance costs	1,070	1,017
Loss on extinguishment of debt	9,014
Gain on convertible note hedge and warrants, net	(3,461)
Other, net	1,165	362
Changes in assets and liabilities, net of effect from purchases of businesses :
Accounts receivable	(821,795)	(109,916)
Inventory	(53,815)	(38,091)
Software development costs and licenses	(7,866)	(111,317)
Prepaid expenses, other current and other non-current assets	(35,835)	8,236
Deferred revenue	1,127,500	24,420
Deferred cost of goods sold	(298,559)	(4,917)
Accounts payable, accrued expenses and other liabilities	283,318	96,075
Net cash used in discontinued operations	(720)	(814)
Net cash provided by (used in) operating activities	135,121	(82,318)
Investing activities :
Purchase of fixed assets	(15,452)	(8,021)
Net cash used in investing activities	(15,452)	(8,021)
Financing activities :
Proceeds from issuance of 1.00% Convertible Notes	283,188
Payment for extinguishment of 4.375% Convertible Notes	(165,999)
Proceeds from termination of convertible note hedge transactions	84,429
Payment for termination of convertible note warrant transactions	(55,651)
Payment of debt issuance costs for the issuance of 1.00% Convertible Notes	(2,815)
Net cash provided by financing activities	143,152
Effects of foreign currency exchange rates on cash and cash equivalents	(3,400)	(1,656)
Net increase (decrease) in cash and cash equivalents	259,421	(91,995)
Cash and cash equivalents, beginning of year	402,502	420,279
Cash and cash equivalents, end of period	$ 661,923	$ 328,284