NET INCOME PER SHARE (Details) (USD $) In Thousands, except Per Share data	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Reconciliation of the numerator and denominator of basic and diluted net income (loss) per share
Net income	$ 116,706	$ 219,812	$ 282,129	$ 199,984
Weighted-average shares - basic	457,721	459,588	456,992	458,872
Incremental shares and share equivalents	9,141	8,585	10,048	7,073
Weighted-average shares - diluted	466,862	468,173	467,040	465,945
Basic
Net income per share - basic (in dollars per share)	$ 0.25	$ 0.48	$ 0.62	$ 0.44
Diluted
Net income per share - diluted (in dollars per share)	$ 0.25	$ 0.47	$ 0.60	$ 0.43

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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+ Details

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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- Definition

Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

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