Share-Based Compensation Expense (Details 1) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Oct. 31, 2012 Y	Oct. 31, 2011	Oct. 31, 2010	Oct. 31, 2009
Summarizes information with respect to stock options outstanding
Range of Exercise Price, Lower (in dollars per share)	$ 0.94
Number of Shares, Options Outstanding (in shares)	3,207
Weighted Average, Outstanding Options Remaining Contractual Life (Years)	2.66
Weighted Average Exercise Price, Options Outstanding (per share)	$ 27.58	$ 30.01	$ 40.96	$ 45.80
Aggregate Intrinsic Value, Options Outstanding	$ 1,445
Number of Shares, Vested Options (in shares)	3,175
Weighted Average, Vested Options Remaining Contractual Life (Years)	2.62
Weighted Average Exercise Price, Vested Options (per share)	$ 27.75
Aggregate Intrinsic Value, Vested Options	1,387
Range of Exercise Price Range One [Member]
Summarizes information with respect to stock options outstanding
Range of Exercise Price, Lower (in dollars per share)	$ 0.94
Range of Exercise Price, Upper (in dollars per share)	$ 16.31
Number of Shares, Options Outstanding (in shares)	318
Weighted Average, Outstanding Options Remaining Contractual Life (Years)	5.03
Weighted Average Exercise Price, Options Outstanding (per share)	$ 8.44
Aggregate Intrinsic Value, Options Outstanding	1,445
Number of Shares, Vested Options (in shares)	286
Weighted Average, Vested Options Remaining Contractual Life (Years)	4.84
Weighted Average Exercise Price, Vested Options (per share)	$ 8.16
Aggregate Intrinsic Value, Vested Options	1,387
Range of Exercise Price Range Two [Member]
Summarizes information with respect to stock options outstanding
Range of Exercise Price, Lower (in dollars per share)	$ 16.52
Range of Exercise Price, Upper (in dollars per share)	$ 17.29
Number of Shares, Options Outstanding (in shares)	389
Weighted Average, Outstanding Options Remaining Contractual Life (Years)	2.68
Weighted Average Exercise Price, Options Outstanding (per share)	$ 16.68
Aggregate Intrinsic Value, Options Outstanding	0
Number of Shares, Vested Options (in shares)	389
Weighted Average, Vested Options Remaining Contractual Life (Years)	2.68
Weighted Average Exercise Price, Vested Options (per share)	$ 16.68
Aggregate Intrinsic Value, Vested Options	0
Range of Exercise Price Range Three [Member]
Summarizes information with respect to stock options outstanding
Range of Exercise Price, Lower (in dollars per share)	$ 17.43
Range of Exercise Price, Upper (in dollars per share)	$ 24.5
Number of Shares, Options Outstanding (in shares)	529
Weighted Average, Outstanding Options Remaining Contractual Life (Years)	2.48
Weighted Average Exercise Price, Options Outstanding (per share)	$ 20.46
Aggregate Intrinsic Value, Options Outstanding	0
Number of Shares, Vested Options (in shares)	529
Weighted Average, Vested Options Remaining Contractual Life (Years)	2.48
Weighted Average Exercise Price, Vested Options (per share)	$ 20.46
Aggregate Intrinsic Value, Vested Options	0
Range of Exercise Price Range Four [Member]
Summarizes information with respect to stock options outstanding
Range of Exercise Price, Lower (in dollars per share)	$ 24.69
Range of Exercise Price, Upper (in dollars per share)	$ 28.28
Number of Shares, Options Outstanding (in shares)	406
Weighted Average, Outstanding Options Remaining Contractual Life (Years)	3.67
Weighted Average Exercise Price, Options Outstanding (per share)	$ 27.00
Aggregate Intrinsic Value, Options Outstanding	0
Number of Shares, Vested Options (in shares)	406
Weighted Average, Vested Options Remaining Contractual Life (Years)	3.67
Weighted Average Exercise Price, Vested Options (per share)	$ 27.00
Aggregate Intrinsic Value, Vested Options	0
Range of Exercise Price Range Five [Member]
Summarizes information with respect to stock options outstanding
Range of Exercise Price, Lower (in dollars per share)	$ 28.61
Range of Exercise Price, Upper (in dollars per share)	$ 31.43
Number of Shares, Options Outstanding (in shares)	195
Weighted Average, Outstanding Options Remaining Contractual Life (Years)	3.20
Weighted Average Exercise Price, Options Outstanding (per share)	$ 29.80
Aggregate Intrinsic Value, Options Outstanding	0
Number of Shares, Vested Options (in shares)	195
Weighted Average, Vested Options Remaining Contractual Life (Years)	3.20
Weighted Average Exercise Price, Vested Options (per share)	$ 29.80
Aggregate Intrinsic Value, Vested Options	0
Range of Exercise Price Range Six [Member]
Summarizes information with respect to stock options outstanding
Range of Exercise Price, Lower (in dollars per share)	$ 31.71
Range of Exercise Price, Upper (in dollars per share)	$ 32.55
Number of Shares, Options Outstanding (in shares)	506
Weighted Average, Outstanding Options Remaining Contractual Life (Years)	0.31
Weighted Average Exercise Price, Options Outstanding (per share)	$ 31.72
Aggregate Intrinsic Value, Options Outstanding	0
Number of Shares, Vested Options (in shares)	506
Weighted Average, Vested Options Remaining Contractual Life (Years)	0.31
Weighted Average Exercise Price, Vested Options (per share)	$ 31.72
Aggregate Intrinsic Value, Vested Options	0
Range of Exercise Price Range Seven [Member]
Summarizes information with respect to stock options outstanding
Range of Exercise Price, Lower (in dollars per share)	$ 33
Range of Exercise Price, Upper (in dollars per share)	$ 37.1
Number of Shares, Options Outstanding (in shares)	345
Weighted Average, Outstanding Options Remaining Contractual Life (Years)	3.89
Weighted Average Exercise Price, Options Outstanding (per share)	$ 35.19
Aggregate Intrinsic Value, Options Outstanding	0
Number of Shares, Vested Options (in shares)	345
Weighted Average, Vested Options Remaining Contractual Life (Years)	3.89
Weighted Average Exercise Price, Vested Options (per share)	$ 35.19
Aggregate Intrinsic Value, Vested Options	0
Range Of Exercise Price Range Eight [Member]
Summarizes information with respect to stock options outstanding
Range of Exercise Price, Lower (in dollars per share)	$ 37.31
Range of Exercise Price, Upper (in dollars per share)	$ 47.32
Number of Shares, Options Outstanding (in shares)	487
Weighted Average, Outstanding Options Remaining Contractual Life (Years)	1.93
Weighted Average Exercise Price, Options Outstanding (per share)	$ 44.83
Aggregate Intrinsic Value, Options Outstanding	0
Number of Shares, Vested Options (in shares)	487
Weighted Average, Vested Options Remaining Contractual Life (Years)	1.93
Weighted Average Exercise Price, Vested Options (per share)	$ 44.83
Aggregate Intrinsic Value, Vested Options	0
Range Of Exercise Price Range Nine [Member]
Summarizes information with respect to stock options outstanding
Range of Exercise Price, Lower (in dollars per share)	$ 47.53
Range of Exercise Price, Upper (in dollars per share)	$ 55.79
Number of Shares, Options Outstanding (in shares)	32
Weighted Average, Outstanding Options Remaining Contractual Life (Years)	0.80
Weighted Average Exercise Price, Options Outstanding (per share)	$ 49.35
Aggregate Intrinsic Value, Options Outstanding	0
Number of Shares, Vested Options (in shares)	32
Weighted Average, Vested Options Remaining Contractual Life (Years)	0.80
Weighted Average Exercise Price, Vested Options (per share)	$ 49.35
Aggregate Intrinsic Value, Vested Options	$ 0