Condensed Consolidated Balance Sheets (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
ASSETS
Cash and cash equivalents	$ 382.0	$ 279.8
Short-term investments	611.9	630.6
Accounts receivable, net	250.3	246.8
Inventory	100.1	86.8
Prepaids and other assets	17.0	23.3
Deferred tax assets	4.0	8.5
Total current assets	1,365.3	1,275.8
Property, plant and equipment, net	194.2	159.8
Long-term investments	828.1	698.5
Long-term deferred tax assets	77.3	73.3
Intangible and other assets, net	68.1	66.1
Goodwill	116.9	116.9
Total assets	2,649.9	2,390.4
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	37.5	35.6
Accrued compensation and employee benefits	54.6	63.4
Deferred revenue	134.3	126.1
Other accrued liabilities	47.6	48.7
Total current liabilities	274.0	273.8
Long-term liabilities	87.4	79.2
Total liabilities	361.4	353.0
Commitments and contingencies	0	0
Stockholders' equity:
Preferred stock, 2.5 shares authorized, $0.001 par value, issuable in series; no shares issued and outstanding as of June 30, 2011 and December 31, 2010	0	0
Common stock, 100.0 shares authorized, $0.001 par value, 39.1 and 38.9 shares issued and outstanding as of June 30, 2011 and December 31, 2010, respectively	0	0
Additional paid-in capital	1,487.4	1,316.9
Retained earnings	798.5	718.9
Accumulated other comprehensive income	2.6	1.6
Total stockholders' equity	2,288.5	2,037.4
Total liabilities and stockholders' equity	$ 2,649.9	$ 2,390.4