Summary Consolidated Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013
Quarterly Summary of Income Statement Data [Abstract]
Revenues	$ 1,437,202	$ 1,028,011	$ 852,583	$ 853,452	$ 1,350,690	$ 1,056,857	$ 860,374	$ 643,681	$ 4,171,248	$ 3,911,602	$ 2,674,299
Gross Profit	320,870	203,617	174,071	203,420	288,115	239,625	172,376	129,649
Income before income taxes	217,543	107,464	86,532	124,023	188,538	151,325	93,484	71,235	535,562	504,582	267,697
Net income	$ 147,163	$ 66,749	$ 67,930	$ 81,325	$ 131,524	$ 97,707	$ 65,222	$ 45,580	$ 363,167	$ 340,032	$ 170,606
Earnings Per Share [Abstract]
Earnings Per Share, Basic	$ 0.83	$ 0.38	$ 0.38	$ 0.46	$ 0.74	$ 0.55	$ 0.37	$ 0.26	$ 2.06	$ 1.91	$ 1.01
Earnings Per Share, Diluted	$ 0.80	$ 0.36	$ 0.37	$ 0.44	$ 0.71	$ 0.53	$ 0.35	$ 0.25	$ 1.97	$ 1.84	$ 0.97
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Basic weighted-average shares	176,370	176,797	176,458	176,076	177,540	178,217	178,082	176,474	176,425	177,578	169,288
Weighted Average Number of Shares Outstanding, Diluted	184,736	185,133	184,838	184,107	185,669	186,501	186,442	184,888	184,703	185,875	177,963
Summary Consolidated Quarterly Financial Data (Textual) [Abstract]
Stucco, Construction Claims, And Litigation Charge	$ 8,200	$ 4,900			$ 32,000