Condensed Consolidated Statements of Operations and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2016	Jul. 31, 2015
Revenues	$ 1,269,934	$ 1,028,011	$ 3,314,057	$ 2,734,046
Cost of revenues	991,416	824,394	2,574,298	2,152,938
Selling, general and administrative	134,984	116,175	385,120	330,174
Total	1,126,400	940,569	2,959,418	2,483,112
Income from operations	143,534	87,442	354,639	250,934
Other:
Income from unconsolidated entities	4,998	5,952	22,754	17,080
Other income - net	15,121	14,070	43,474	50,005
Income before income taxes	163,653	107,464	420,867	318,019
Income tax provision (benefit)	58,170	40,715	153,150	102,015
Net income	105,483	66,749	267,717	216,004
Other comprehensive (loss) income, net of tax:
Change in pension liability	155	139	23	(62)
Change in fair value of available-for-sale securities				2
Change in unrealized income (loss) on derivative held by equity investee		12	31	(2)
Other comprehensive (loss) income	155	151	54	(62)
Total comprehensive income	$ 105,638	$ 66,900	$ 267,771	$ 215,942
Income per share:
Basic	$ 0.64	$ 0.38	$ 1.58	$ 1.22
Diluted	$ 0.61	$ 0.36	$ 1.52	$ 1.18
Weighted average number of shares:
Basic	165,919	176,797	169,692	176,443
Diluted	173,405	185,133	177,403	184,692