CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Jul. 31, 2011	Jul. 31, 2010	Jul. 31, 2011	Jul. 31, 2010
Revenues	$ 1,076,247	$ 869,029	$ 3,165,499	$ 2,594,374
Expenses
Operating	952,844	776,224	2,821,672	2,330,299
Selling, general and administrative	76,356	54,697	242,406	182,743
Amortization of intangible assets	6,314	2,782	17,273	8,251
Total expenses	1,035,514	833,703	3,081,351	2,521,293
Operating profit	40,733	35,326	84,148	73,081
Other-than-temporary impairment losses on auction rate security:
Gross impairment losses				(114)
Impairments recognized in other comprehensive income				(13)
Income from unconsolidated affiliates, net	1,166		2,785
Interest expense	(4,114)	(1,149)	(12,477)	(3,541)
Income from continuing operations before income taxes	37,785	34,177	74,456	69,413
Provision for income taxes	(9,874)	(13,204)	(23,940)	(26,981)
Income from continuing operations	27,911	20,973	50,516	42,432
Loss from discontinued operations, net of taxes	(36)	(10)	(60)	(117)
Net income	$ 27,875	$ 20,963	$ 50,456	$ 42,315
Net income per common share - Basic
Income from continuing operations	$ 0.52	$ 0.40	$ 0.95	$ 0.81
Loss from discontinued operations
Net Income	$ 0.52	$ 0.40	$ 0.95	$ 0.81
Net income per common share - Diluted
Income from continuing operations	$ 0.51	$ 0.40	$ 0.93	$ 0.80
Loss from discontinued operations
Net Income	$ 0.51	$ 0.40	$ 0.93	$ 0.80
Weighted-average common and common equivalent shares outstanding
Basic	53,207	52,149	53,051	51,992
Diluted	54,201	52,996	54,084	52,754
Dividends declared per common share	$ 0.140	$ 0.135	$ 0.420	$ 0.405