Condensed Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 493.0	$ 782.1
Short-term investments	521.3	621.4
Accounts receivable, net	259.1	301.4
Inventories	198.9	179.6
Prepaids and other current assets	86.2	38.3
Deferred tax assets	33.4	9.6
Total current assets	1,591.9	1,932.4
Property, plant and equipment, net	335.4	309.9
Long-term investments	1,248.4	1,350.4
Long-term deferred tax assets	143.2	126.1
Intangible and other assets, net	134.6	94.1
Goodwill	198.0	137.4
Total assets	3,651.5	3,950.3
Current liabilities:
Accounts payable	53.6	46.2
Accrued compensation and employee benefits	76.1	70.7
Deferred revenue	217.8	200.1
Other accrued liabilities	133.0	63.9
Total current liabilities	480.5	380.9
Other long-term liabilities	86.8	68.0
Total liabilities	567.3	448.9
Contingencies (Note 6)
Stockholders’ equity:
Preferred stock, 2.5 shares authorized, $0.001 par value, issuable in series; no shares issued and outstanding as of September 30, 2014, and December 31, 2013, respectively	0	0
Common stock, 100.0 shares authorized, $0.001 par value, 36.3 shares and 38.2 shares outstanding as of September 30, 2014, and December 31, 2013, respectively	0	0
Additional paid-in capital	2,741.8	2,519.9
Retained earnings	341.0	979.4
Accumulated other comprehensive income	1.4	2.1
Total stockholders’ equity	3,084.2	3,501.4
Total liabilities and stockholders’ equity	$ 3,651.5	$ 3,950.3