Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2013	Jul. 31, 2012
Revenues	$ 689,160	$ 554,319	$ 1,629,765	$ 1,249,955
Cost of revenues	545,089	447,928	1,311,039	1,026,357
Selling, general and administrative	88,870	74,892	246,467	212,785
Total	633,959	522,820	1,557,506	1,239,142
Income (loss) from operations	55,201	31,499	72,259	10,813
Other:
Income from unconsolidated entities	768	5,672	8,844	19,348
Other income - net	12,284	5,781	36,444	22,032
Income before income taxes	68,253	42,952	117,547	52,193
Income tax provision (benefit)	21,658	(18,691)	41,846	(23,536)
Net income	$ 46,595	$ 61,643	$ 75,701	$ 75,729
Income per share:
Basic	$ 0.28	$ 0.37	$ 0.45	$ 0.45
Diluted	$ 0.26	$ 0.36	$ 0.43	$ 0.45
Weighted average number of shares:
Basic	169,268	167,664	169,237	166,990
Diluted	178,001	170,229	177,966	168,613