CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 865,597	$ 513,993
Short-term investments, available-for-sale	7,202	13,186
Accounts receivable, net of allowances of $42,734 and $33,279 at June 30, 2022 and December 31, 2021, respectively	696,836	885,311
Inventories, net	24,911	23,158
Prepaid expenses and other current assets	303,289	283,337
Total current assets	1,897,835	1,718,985
Long-term investments, available-for-sale	0	14,754
Property and equipment, net	207,082	219,031
Operating lease right-of-use assets, net	132,638	154,685
Goodwill	3,404,214	3,400,792
Other intangible assets, net	691,254	760,293
Deferred tax assets, net	398,538	417,016
Other assets	279,538	289,961
Total assets	7,011,099	6,975,517
Current liabilities:
Accounts payable	146,746	165,250
Accrued expenses and other current liabilities	354,954	444,767
Income taxes payable	88,353	35,996
Short-term debt	99,966	0
Current portion of deferred revenues	1,617,254	1,708,058
Total current liabilities	2,307,273	2,354,071
Long-term portion of deferred revenues	311,584	329,535
Long-term debt	3,228,617	3,326,327
Long-term income taxes payable	153,587	204,782
Operating lease liabilities	138,288	166,014
Other liabilities	47,394	47,531
Commitments and contingencies
Stockholders' equity:
Preferred stock at $.01 par value: 5,000 shares authorized, none issued and outstanding	0	0
Common stock at $.001 par value: 1,000,000 shares authorized; 327,925 and 325,174 shares issued and outstanding at June 30, 2022 and December 31, 2021, respectively	328	325
Additional paid-in capital	7,224,119	7,041,576
Retained earnings	5,276,925	5,100,624
Accumulated other comprehensive loss	(5,776)	(2,896)
Stockholders' equity before treasury stock	12,495,596	12,139,629
Less - common stock in treasury, at cost (201,087 and 200,313 shares at June 30, 2022 and December 31, 2021, respectively)	(11,671,240)	(11,592,372)
Total stockholders' equity	824,356	547,257
Total liabilities and stockholders' equity	$ 7,011,099	$ 6,975,517