XML 49 R40.htm IDEA: XBRL DOCUMENT

Effective Income Tax Rate (Details)	3 Months Ended	6 Months Ended
Effective Income Tax Rate (Details)	Jun. 30, 2011	Jun. 30, 2011
Income Tax Disclosure [Abstract]
Effective income tax rate	30.50%	32.30%

- Definition

A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

+ References+ Details