Summary Consolidated Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Quarterly Summary of Income Statement Data [Abstract]
Revenues	$ 1,855,451	$ 1,269,934	$ 1,115,557	$ 928,566	$ 1,437,202	$ 1,028,011	$ 852,583	$ 853,452	$ 5,169,508	$ 4,171,248	$ 3,911,602
Gross Profit	285,684	278,518	244,986	216,255	320,870	203,617	174,071	203,420
Income before income taxes	168,160	163,653	140,397	116,817	217,543	107,464	86,532	124,023	589,027	535,562	504,582
Net income	$ 114,378	$ 105,483	$ 89,054	$ 73,180	$ 147,163	$ 66,749	$ 67,930	$ 81,325	$ 382,095	$ 363,167	$ 340,032
Earnings Per Share [Abstract]
Earnings Per Share, Basic	$ 0.70	$ 0.64	$ 0.53	$ 0.42	$ 0.83	$ 0.38	$ 0.38	$ 0.46	$ 2.27	$ 2.06	$ 1.91
Earnings Per Share, Diluted	$ 0.67	$ 0.61	$ 0.51	$ 0.40	$ 0.80	$ 0.36	$ 0.37	$ 0.44	$ 2.18	$ 1.97	$ 1.84
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Basic weighted-average shares	163,970	165,919	168,952	174,205	176,370	176,797	176,458	176,076	168,261	176,425	177,578
Weighted Average Number of Shares Outstanding, Diluted	171,683	173,405	176,414	182,391	184,736	185,133	184,838	184,107	175,973	184,703	185,875
Summary Consolidated Quarterly Financial Data (Textual) [Abstract]
Stucco, Construction Claims, And Litigation Charge	$ 121,200				$ 14,700