Accumulated Other Comprehensive Loss and Total Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2012	Jul. 31, 2011
Accumulated Other Comprehensive Loss and Total Comprehensive Income
Net income as reported	$ 61,643	$ 42,108	$ 75,729	$ 24,752
Changes in pension liability	201	173	293	520
Change in fair value of available-for-sale securities	258	(194)	414	(189)
Unrealized loss on derivative held by equity investee	(214)		(942)
Total comprehensive income	$ 61,888	$ 42,087	$ 75,494	$ 25,083

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

+ References+ Details

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

+ References

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+ Details

- Definition

Net of tax amount, before reclassification adjustments, of the change in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Also includes an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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+ Details

- Definition

Net of tax amount of unrealized holding gain (loss) before reclassification adjustments and transfers on available-for-sale securities.

+ References

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