CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Operating activities:
Net income	$ 187,826	$ 118,095
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization and impairment of software development costs and licenses	92,664	72,505
Depreciation	25,826	23,037
Amortization and impairment of intellectual property	11,801	10,627
Stock-based compensation	98,719	113,199
Other, net	(2,631)	4,325
Changes in assets and liabilities:
Accounts receivable	(189,477)	(463,019)
Inventory	(7,266)	(12,064)
Software development costs and licenses	(127,290)	(51,932)
Prepaid expenses and other assets	65,296	(131,055)
Deferred revenue	284,441	66,148
Deferred cost of goods sold	4,753	15,287
Accounts payable, accrued expenses and other liabilities	182,083	379,005
Net cash provided by operating activities	626,745	144,158
Investing activities:
Change in bank time deposits	(218,239)	6,720
Proceeds from available-for-sale securities	260,729	137,071
Purchases of available-for-sale securities	(435,511)	(141,244)
Purchases of fixed assets	(25,021)	(25,532)
Purchases of long-term investments	(9,100)	(4,500)
Business acquisitions	(75,482)	(8,715)
Net cash used in investing activities	(502,624)	(36,200)
Financing activities:
Tax payment related to net share settlements on restricted stock awards	(48,202)	(61,478)
Issuance of common stock	6,503	0
Net cash used in financing activities	(41,699)	(61,478)
Effects of foreign currency exchange rates on cash, cash equivalents, and restricted cash and cash equivalents	8,966	(8,063)
Net change in cash, cash equivalents, and restricted cash and cash equivalents	91,388	38,417
Cash, cash equivalents, and restricted cash and cash equivalents, beginning of year	1,993,392	1,391,986
Cash, cash equivalents, and restricted cash and cash equivalents, end of period	$ 2,084,780	$ 1,430,403