STOCK-BASED COMPENSATION (Details 2) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Sep. 30, 2011 Y
Range of Exercise Prices from $11.3318 to $16.01
Information about outstanding and exercisable stock options
Exercise price, low end of range (in dollars per share)	$ 11.3318
Exercise price, high end of range (in dollars per share)	$ 16.01
Outstanding Stock Options, Options at the end of the period (in shares)	1,489
Outstanding Stock Options, Weighted-Average Remaining Life (in years)	2.1
Outstanding Stock Options, Weighted-Average Exercise Price (in dollars per share)	$ 13.91
Exercisable Stock Options, Options at the end of the period (in shares)	1,489
Exercisable Stock Options, Weighted-Average Exercise Price (in dollars per share)	$ 13.91
Range of Exercise Prices from $21.05 to $30.2375
Information about outstanding and exercisable stock options
Exercise price, low end of range (in dollars per share)	$ 21.05
Exercise price, high end of range (in dollars per share)	$ 30.2375
Outstanding Stock Options, Options at the end of the period (in shares)	1,641
Outstanding Stock Options, Weighted-Average Remaining Life (in years)	5.9
Outstanding Stock Options, Weighted-Average Exercise Price (in dollars per share)	$ 24.97
Exercisable Stock Options, Options at the end of the period (in shares)	1,230
Exercisable Stock Options, Weighted-Average Exercise Price (in dollars per share)	$ 26.27
Range of Exercise Prices from $35.105 to $47.935
Information about outstanding and exercisable stock options
Exercise price, low end of range (in dollars per share)	$ 35.105
Exercise price, high end of range (in dollars per share)	$ 47.935
Outstanding Stock Options, Options at the end of the period (in shares)	1,459
Outstanding Stock Options, Weighted-Average Remaining Life (in years)	7.6
Outstanding Stock Options, Weighted-Average Exercise Price (in dollars per share)	$ 38.99
Exercisable Stock Options, Options at the end of the period (in shares)	568
Exercisable Stock Options, Weighted-Average Exercise Price (in dollars per share)	$ 36.00
Range of Exercise Prices from $11.3318 to $47.935
Information about outstanding and exercisable stock options
Exercise price, low end of range (in dollars per share)	$ 11.3318
Exercise price, high end of range (in dollars per share)	$ 47.935
Outstanding Stock Options, Options at the end of the period (in shares)	4,589
Outstanding Stock Options, Weighted-Average Remaining Life (in years)	5.2
Outstanding Stock Options, Weighted-Average Exercise Price (in dollars per share)	$ 25.84
Exercisable Stock Options, Options at the end of the period (in shares)	3,287
Exercisable Stock Options, Weighted-Average Exercise Price (in dollars per share)	$ 22.35

Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iii)

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

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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.

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- Definition

The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph 64

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (g)

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

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- Definition

The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(1)(c)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(iii)

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

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- Definition

The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(1)(a, b)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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

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

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- Definition

The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

+ 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 (c)(1)(i)-(ii)

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

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- Definition

The weighted-average period remaining as of the balance sheet date until option expiration pertaining to the outstanding stock options for all option plans in the customized range of exercise prices, which may be expressed in a variety of ways (for example, years, months).

+ 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 (e)(1)

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

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- Definition

The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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