Condensed Consolidated Statements of Operations and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2015	Jul. 31, 2014
Revenues	$ 1,028,011	$ 1,056,857	$ 2,734,046	$ 2,560,912
Cost of revenues	824,394	817,232	2,152,938	2,019,262
Selling, general and administrative	116,175	109,981	330,174	312,171
Total	940,569	927,213	2,483,112	2,331,433
Income from operations	87,442	129,644	250,934	229,479
Other:
Income from unconsolidated entities	5,952	950	17,080	38,192
Other income - net	14,070	20,731	50,005	48,373
Income before income taxes	107,464	151,325	318,019	316,044
Income tax provision (benefit)	40,715	53,618	102,015	107,536
Net income	66,749	97,707	216,004	208,508
Other comprehensive (loss) income, net of tax:
Change in pension liability	$ 139	(3)	(62)	153
Change in fair value of available-for-sale securities		8	2	(14)
Change in unrealized income (loss) on derivative held by equity investee	$ 12	(25)	(2)	198
Other comprehensive (loss) income	151	(20)	(62)	337
Total comprehensive income	$ 66,900	$ 97,687	$ 215,942	$ 208,845
Income per share:
Basic	$ 0.38	$ 0.55	$ 1.22	$ 1.17
Diluted	$ 0.36	$ 0.53	$ 1.18	$ 1.13
Weighted average number of shares:
Basic	176,797	178,217	176,443	177,591
Diluted	185,133	186,501	184,692	185,944