Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 1,646.0	$ 1,420.9
Short-term investments	599.4	527.1
Accounts receivable, net of allowances	783.9	780.7
Prepaid expenses and other current assets	244.9	183.7
Total current assets	3,274.2	2,912.4
Property and equipment, net	1,047.3	1,021.0
Long-term investments	1,171.4	1,244.2
Restricted cash and investments	36.1	36.2
Purchased intangible assets, net	30.6	33.9
Goodwill	2,981.3	2,981.3
Other long-term assets	376.8	378.9
Total assets	8,917.7	8,607.9
Current liabilities:
Short-term debt	0.0	299.9
Accounts payable	233.0	159.3
Accrued compensation	180.5	269.5
Deferred revenue	893.3	822.9
Other accrued liabilities	208.5	250.3
Total current liabilities	1,515.3	1,801.9
Long-term debt	2,131.8	1,637.5
Long-term deferred revenue	366.7	345.2
Long-term income taxes payable	190.4	187.3
Other long-term liabilities	75.4	61.6
Total liabilities	$ 4,279.6	$ 4,033.5
Commitments and contingencies (Note 14)
Stockholders' equity:
Convertible preferred stock, $0.00001 par value; 10.0 shares authorized; none issued and outstanding	$ 0.0	$ 0.0
Common stock, $0.00001 par value; 1,000.0 shares authorized; 386.3 shares and 384.0 shares issued and outstanding as of March 31, 2016 and December 31, 2015, respectively	0.0	0.0
Additional paid-in capital	8,330.7	8,334.8
Accumulated other comprehensive loss	(7.5)	(19.2)
Accumulated deficit	(3,685.1)	(3,741.2)
Total stockholders' equity	4,638.1	4,574.4
Total liabilities and stockholders' equity	$ 8,917.7	$ 8,607.9