XML 26 R67.htm IDEA: XBRL DOCUMENT

Taxes (Provision (Benefit) For Income Taxes And Effective Tax Rates) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2012	Apr. 30, 2011	Apr. 30, 2012	Apr. 30, 2011
Taxes [Abstract]
Income before income taxes	$ 23,489	$ 57,259	$ 97,318	$ 109,591
Provision (benefit) for income tax	$ 2,518	$ (23,855)	$ 19,653	$ (19,749)
Effective tax rate	10.70%	(41.70%)	20.20%	(18.00%)

- 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

- Definition

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

+ References+ Details