Number of Equal Annual Installments

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- Definition

Pre-vesting forfeiture rate

+ References

No definition available.

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- Definition

Restricted stock value shares netted for tax with holdings

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Common Stock Issuable per Restricted Stock Unit

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Target Multiplier

+ References

No definition available.

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- Definition

Shares reserved for issuance upon the exercise of stock options and restricted stock units granted and outstanding

+ References

No definition available.

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- Definition

Shares retained by company to cover tax withholdings upon vesting of stock-based awards

+ 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

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section 50

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-Subparagraph (a)(1)

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-Paragraph 2

-Subparagraph (c)(2)(iii)(1)

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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

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- Definition

Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)(1)

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

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- Definition

Number of options outstanding, including both vested and non-vested options.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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-Subparagraph (c)(1)(i)-(ii)

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- Definition

Percentage of vesting of share-based compensation awards.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

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-Name Accounting Standards Codification

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-SubTopic 10

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-Paragraph 2

-Subparagraph (a)(2)

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Equity Incentive Plan (Narrative) (Details) $ / shares in Units, $ in Millions	1 Months Ended	12 Months Ended
	Jul. 31, 2005	Sep. 30, 2015 USD ($) shares / unit installment $ / shares shares	Sep. 30, 2014 USD ($) $ / shares shares	Sep. 30, 2013 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock issuable per restricted stock unit \| shares / unit		1
Total unrecognized compensation cost \| $		$ 62.5
Weighted average remaining recognition period, in months		17 months
Common stock were available for grant under the 2000 plan		3,600,000
Common stock were reserved for issuance		3,700,000
Shares retained by company to cover tax withholdings		800,000	800,000	700,000
Employee tax withholdings \| $		$ 29.2	$ 26.9	$ 15.0
vesting period	4 years
Option expiration period	10 years
Options outstanding and exercisable (in shares)		3,000
Directors And Executive Officers [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-vesting forfeiture rate		0.00%
Other Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-vesting forfeiture rate		7.00%
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted		1,910,000
Maximum percentage of target RSUs to vest (percent)		100.00%
Weighted average fair value per share \| $ / shares		$ 38.19
Restricted Shares and Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value per share \| $ / shares		$ 38.19	$ 33.88	$ 22.87
Minimum [Member] \| Vice President [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-vesting forfeiture rate		2.00%
Maximum [Member] \| Vice President [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-vesting forfeiture rate		4.00%
Time-based Award [Member] \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted		1,597,000
TSR Units \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
vesting period		3 years
Performance Based [Member] \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value per share \| $ / shares		$ 41.32
Performance Based [Member] \| Maximum [Member] \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted		590,000
Share-based Compensation Award, Tranche One \| Restricted Stock Units (RSUs) \| Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target multiplier (up to)		2
Share-based Compensation Award, Tranche Two \| Restricted Stock Units (RSUs) \| Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target multiplier (up to)		1.5
Vest in one installment [Member] [Domain] \| Time-based Award [Member] \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted		212,000
vesting period		1 year
Vest in 3 Equal Installments on November 15, 2015, November 15, 2016 and November 15, 2017 [Member] [Member] \| Time Based Member \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Equal Annual Installments \| installment		3