Net Income Per Share (Reconciliation Of The Numerator And Denominator Of Basic And Diluted Income Per Share) (Details) (USD $) In Thousands, except Per Share data	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Net Income Per Share
Net Income Attributable to Endo Pharmaceuticals Holding Inc., Common Stockholders	$ 54,583	$ 51,460	$ 110,370	$ 111,815
For basic per share data - weighted average shares	116,663	116,060	116,509	116,704
Dilutive effect of common stock equivalents	2,434	600	2,352	642
Dilutive effect of 1.75% Convertible Senior Subordinated Notes and warrants	$ 3,589		$ 2,863
For diluted per share data - weighted average shares	122,686	116,660	121,724	117,346
Basic net income per share attributable to Endo Pharmaceuticals Holdings Inc.	$ 0.47	$ 0.44	$ 0.95	$ 0.96
Diluted net income per share attributable to Endo Pharmaceuticals Holdings Inc.	$ 0.44	$ 0.44	$ 0.91	$ 0.95

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.

+ References+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

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-Glossary Other Comprehensive Income
-URI http://asc.fasb.org/extlink&oid=6519514

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-URI http://asc.fasb.org/extlink&oid=6518256

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+ Details

- 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.

+ References+ Details

- 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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+ Details