Income Per Share Information (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2015	Jul. 31, 2014	Sep. 05, 2012
Earnings Per Share [Abstract]
Net Income Attributable to Parent	$ 66,749	$ 97,707	$ 216,004	$ 208,508
Interest on Convertible Debt, Net of Tax	393	396	1,179	1,185
Net Income Available to Common Stockholders, Diluted	$ 67,142	$ 98,103	$ 217,183	$ 209,693
Basic weighted-average shares	176,797	178,217	176,443	177,591
Common stock equivalents	2,478	2,426	2,391	2,495
Incremental Common Shares Attributable to Conversion of Debt Securities	5,858	5,858	5,858	5,858
Diluted weighted-average shares	185,133	186,501	184,692	185,944
Debt Instrument [Line Items]
Shares Issued under Stock Incentive and Employee Stock Purchase Plans	55	138	1,320	1,362
Zero Point Five Percent Exchangeable Senior Notes Due Two Thousand and Thirty Two [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage					0.50%
Restricted Stock Units RSU And Employee Stock Option Member [Member]
Debt Instrument [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	1,572	1,830	1,918	1,560