Condensed Consolidated Statements of Operations and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017
Revenues	$ 1,913,353	$ 1,502,909	$ 4,688,020	$ 3,787,151
Cost of revenues	1,509,619	1,176,028	3,742,256	2,986,471
Selling, general and administrative	174,071	154,650	497,990	438,497
Total	1,683,690	1,330,678	4,240,246	3,424,968
Income from operations	229,663	172,231	447,774	362,183
Other:
Income from unconsolidated entities	12,469	19,925	53,913	112,274
Other income - net	10,965	11,418	35,756	38,107
Income before income taxes	253,097	203,574	537,443	512,564
Income tax provision	59,839	55,011	100,268	168,947
Net income	193,258	148,563	437,175	343,617
Other comprehensive income, net of tax:
Other comprehensive income, net	170	167	512	504
Total comprehensive income	$ 193,428	$ 148,730	$ 437,687	$ 344,121
Per share:
Basic earnings	$ 1.28	$ 0.91	$ 2.85	$ 2.11
Diluted earnings	1.26	0.87	2.81	2.01
Cash dividends declared	$ 0.11	$ 0.08	$ 0.30	$ 0.16
Weighted average number of shares:
Basic	151,257	163,478	153,290	163,186
Diluted	153,173	171,562	155,733	171,127