CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2020	Mar. 31, 2020
Current assets:
Cash and cash equivalents	$ 1,404,124	$ 1,357,664
Short-term investments	880,825	644,003
Restricted cash and cash equivalents	467,622	546,604
Accounts receivable, net of allowances of $2,201 and $443 at June 30, 2020 and March 31, 2020, respectively	685,169	592,555
Inventory	19,486	19,108
Software development costs and licenses	31,714	40,316
Deferred cost of goods sold	14,281	19,598
Prepaid expenses and other	183,712	273,503
Total current assets	3,686,933	3,493,351
Fixed assets, net	128,904	131,888
Right-of-use assets	158,018	154,284
Software development costs and licenses, net of current portion	409,962	401,778
Goodwill	389,825	386,494
Other intangibles, net	46,746	51,260
Deferred tax assets	120,892	116,676
Long-term restricted cash and cash equivalents	289,526	89,124
Other assets	138,435	123,977
Total assets	5,369,241	4,948,832
Liabilities, Current [Abstract]
Accounts payable	56,410	65,684
Accrued expenses and other current liabilities	1,136,628	1,169,884
Deferred revenue	928,100	777,784
Lease liabilities	27,602	25,187
Total current liabilities	2,148,740	2,038,539
Non-current deferred revenue	32,851	28,339
Non-current lease liabilities	153,506	152,059
Non-current software development royalties	300,970	104,417
Other long-term liabilities	82,146	86,234
Total liabilities	2,718,213	2,409,588
Commitments and contingencies (See Note 13)
Stockholders' equity:
Preferred stock, $.01 par value, 5,000 shares authorized; no shares issued and outstanding at June 30, 2020 and March 31, 2020	0	0
Common stock, $.01 par value, 200,000 shares authorized; 136,689 and 135,927 shares issued and 114,268 and 113,506 outstanding at June 30, 2020 and March 31, 2020, respectively	1,367	1,359
Additional paid-in capital	2,151,774	2,134,748
Treasury stock, at cost; 22,421 common shares at June 30, 2020 and March 31, 2020	(820,572)	(820,572)
Retained earnings	1,370,590	1,282,085
Accumulated other comprehensive loss	(52,131)	(58,376)
Total stockholders' equity	2,651,028	2,539,244
Total liabilities and stockholders' equity	$ 5,369,241	$ 4,948,832