Note 13 - Stock-Based Compensation (Details) (USD $)	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010	Dec. 31, 2009
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Cash received from employees as a result of employee stock options exercised, including ESPP	$ 119,989,000		$ 453,719,000	$ 42,144,000
Sales of common stock under ESPP	700,000		1,000,000	1,200,000
Equity Incentive Plan 2005 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period for stock-based awards granted under the 2005 Plan (in years)	4 years
Deferred Compensation Arrangement with Individual, Maximum Contractual Term	10 years
Share Based Compensation Arrangement By Share Based Payment Award Increase In Number Of Shares Authorized	5,000,000
Shares Available For Future Issuance Under Employee Stock Purchase Plan	19,000,000
Number of shares authorized	29,600,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Exercised non-qualified stock option, shares	4,800,000		20,000,000	1,500,000
Intrinsic value of stock options exercised	97,700,000		139,600,000	6,200,000
Cash received from employees as a result of employee stock options exercised, including ESPP	102,300,000		437,400,000	25,800,000
Restricted Stock Units And Performance Based Restricted Stock Units [Member] | Equity Incentive Plan 2005 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Outstanding, number of shares, beginning of period	7,613,000
Grants	3,736,000
Vested	(2,662,000)
Forfeited	(511,000)
Outstanding, number of shares, end of period	8,176,000		7,613,000
Weighted-average grant-date fair market value per share, outstanding, beginning of period	$ 22.95
Weighted-average grant-date fair market value per share, grants	$ 42.03
Weighted-average grant-date fair market value per share, vested	$ 22.06
Weighted-average grant-date fair market value per share, forfeited	$ 28.17
Weighted-average grant-date fair market value per share, outstanding, end of period	$ 31.62		$ 22.95
Vested and expected to vest	7,191,000
Weighted-average grant-date fair market value per share, vested and expected to vest	$ 31.62
Weighted-average remaining contractual term (in years), outstanding	1.6
Weighted-average remining contractual term (in years), vested and expected to vest	1.5
Aggregate intrinsic value, outstanding	303,321,000	[1]
Aggregate intrinsic value, vested and expected to vest	266,790,000	[1]
Fair value of RSUs and PRSUs vested and expected to vest	71,800,000		53,400,000	50,000,000
Stock Options [Member] | Equity Incentive Plan 2005 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Fair value of options vested and expensed	$ 4,700,000		$ 3,600,000	$ 7,400,000
Performance Based Restricted Stock Units [Member] | Equity Incentive Plan 2005 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Grants			300,000	600,000
Employee Stock Purchase Plan 1987 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Approval to increase shares reserved for future issuance	1,000,000
Shares Available For Future Issuance Under Employee Stock Purchase Plan	2,600,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Discount from market price	85.00%
Average price per share of common stock sold under ESPP	$ 26.12		$ 16.89	$ 13.80

[1] Aggregate intrinsic value represents the closing price per share of our stock on December 31, 2011, multiplied by the number of RSUs and PRSUs outstanding or vested and expected to vest as of December 31, 2011.