Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2012	Jul. 31, 2011
Revenues	$ 1,079,235	$ 1,076,247	$ 3,210,264	$ 3,165,499
Expenses
Operating	971,628	952,844	2,885,964	2,821,672
Selling, general and administrative	79,100	76,356	248,284	242,406
Amortization of intangible assets	5,334	6,314	16,184	17,273
Total expenses	1,056,062	1,035,514	3,150,432	3,081,351
Operating profit	23,173	40,733	59,832	84,148
Other-than-temporary impairment credit losses on auction rate security recognized in earnings			(313)
Income from unconsolidated affiliates, net	747	1,166	5,380	2,785
Interest expense	(2,407)	(4,114)	(7,682)	(12,477)
Income from continuing operations before income taxes	21,513	37,785	57,217	74,456
Provision for income taxes	(8,887)	(9,874)	(22,204)	(23,940)
Income from continuing operations	12,626	27,911	35,013	50,516
Loss from discontinued operations, net of taxes	(49)	(36)	(94)	(60)
Net income	$ 12,577	$ 27,875	$ 34,919	$ 50,456
Net income per common share-Basic
Income from continuing operations	$ 0.23	$ 0.52	$ 0.65	$ 0.95
Loss from discontinued operations, net of taxes
Net income	$ 0.23	$ 0.52	$ 0.65	$ 0.95
Net income per common share-Diluted
Income from continuing operations	$ 0.23	$ 0.51	$ 0.64	$ 0.93
Loss from discontinued operations, net of taxes
Net income	$ 0.23	$ 0.51	$ 0.64	$ 0.93
Weighted-average common and common equivalent shares outstanding
Basic	54,145	53,207	53,863	53,051
Diluted	55,000	54,201	54,819	54,084
Dividends declared per common share	$ 0.145	$ 0.140	$ 0.435	$ 0.420