Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 1,833.2	$ 1,420.9
Short-term investments	752.3	527.1
Accounts receivable, net of allowance for doubtful accounts of $7.6 and $9.3 as of December 31, 2016 and 2015, respectively	1,054.1	780.7
Prepaid expenses and other current assets	332.3	183.7
Total current assets	3,971.9	2,912.4
Property and equipment, net	1,063.8	1,021.0
Long-term investments	1,071.8	1,244.2
Restricted cash and investments	99.9	36.2
Purchased intangible assets, net	130.2	33.9
Goodwill	3,081.7	2,981.3
Other long-term assets	237.2	378.9
Total assets	9,656.5	8,607.9
Current liabilities:
Short-term debt	0.0	299.9
Accounts payable	221.0	159.3
Accrued compensation	233.6	269.5
Deferred revenue	1,032.0	822.9
Other accrued liabilities	249.3	250.3
Total current liabilities	1,735.9	1,801.9
Long-term debt	2,133.7	1,637.5
Long-term deferred revenue	449.1	345.2
Long-term income taxes payable	209.2	187.3
Other long-term liabilities	166.1	61.6
Total liabilities	4,694.0	4,033.5
Commitments and contingencies (Note 16)
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; 381.1 shares and 384.0 shares issued and outstanding as of December 31, 2016 and 2015, respectively	0.0	0.0
Additional paid-in capital	8,281.6	8,334.8
Accumulated other comprehensive loss	(37.3)	(19.2)
Accumulated deficit	(3,281.8)	(3,741.2)
Total stockholders' equity	4,962.5	4,574.4
Total liabilities and stockholders' equity	$ 9,656.5	$ 8,607.9