Share-Based Compensation Plans - Performance Share Narrative (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Oct. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period of TSR awards	3 years
Performance Based Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost, net of estimated forfeitures	10.1
Weighted-average vesting period	1 year 10 months 25 days
Aggregate intrinsic value of outstanding	29.5
Aggregate intrinsic value of vested	0.2
Performance Based Shares \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of the awards that vest per year	0.00%
Performance Based Shares \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of the awards that vest per year	150.00%

Employee Service Share-based Compensation, TSR Awards, Compensation Cost Not yet Recognized, Period for Recognition

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Performance Share Units Outstanding Intrinsic Value

+ References

No definition available.

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Performance Share Units Vested Aggregate Intrinsic Value

+ References

No definition available.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (i)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Percentage of vesting of share-based compensation awards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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