Condensed Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
ASSETS:
Cash and cash equivalents	$ 730,666	$ 757,200
Accounts receivable, net	549,838	619,854
Inventories, net	191,426	181,952
Unbilled receivables	143,589	129,965
Prepaid income taxes	28,100	31,679
Other current assets	69,004	55,851
Total current assets	1,712,623	1,776,501
Property, plant and equipment, net	144,113	141,318
Goodwill	8,681,114	8,647,142
Other intangible assets, net	3,587,838	3,655,843
Deferred taxes	30,300	30,620
Other assets	74,066	73,503
Total assets	14,230,054	14,324,927
LIABILITIES AND STOCKHOLDERS' EQUITY:
Accounts payable	152,638	152,067
Accrued compensation	131,584	161,730
Deferred revenue	513,820	488,399
Other accrued liabilities	251,298	219,339
Income taxes payable	88,126	22,762
Current portion of long-term debt, net	401,072	400,975
Total current liabilities	1,538,538	1,445,272
Long-term debt, net of current portion	5,439,700	5,808,561
Deferred taxes	1,169,151	1,178,205
Other liabilities	111,875	104,024
Total liabilities	8,259,264	8,536,062
Commitments and contingencies (Note 8)
Common stock	1,039	1,036
Additional paid-in capital	1,518,213	1,489,067
Retained earnings	4,764,711	4,642,402
Accumulated other comprehensive earnings	(294,327)	(324,739)
Treasury stock	(18,846)	(18,901)
Total stockholders' equity	5,970,790	5,788,865
Total liabilities and stockholders' equity	$ 14,230,054	$ 14,324,927