v2.4.0.8

Stockholders' Equity (Details) (USD $) | 0 Months Ended | 12 Months Ended |  |  | 12 Months Ended | 0 Months Ended | 12 Months Ended | 0 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 04, 2014 | Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2012 | Aug. 04, 2014 | Sep. 30, 2014 Series A Junior Participating Preferred Stock [Member] | Sep. 30, 2014 Accelerated Share Repurchases, Date [Domain] | Aug. 14, 2014 Common Stock [Member] | Sep. 30, 2014 Common Stock [Member] | Sep. 30, 2013 Common Stock [Member] | Sep. 30, 2012 Common Stock [Member] | Aug. 14, 2014 Additional Paid-in Capital [Member] | Sep. 30, 2014 Additional Paid-in Capital [Member] | Sep. 30, 2013 Additional Paid-in Capital [Member] | Sep. 30, 2012 Additional Paid-in Capital [Member]
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares authorized |  | 5,000,000 | 5,000,000 |  |  | 500,000 |  |  |  |  |  |  |  |  |
Common stock, shares authorized |  | 500,000,000 | 500,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Stock authorized to repurchase | $ 600,000,000 | $ 100,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Accelerated Share Repurchases, Settlement (Payment) or Receipt |  |  |  |  | 125,000,000 |  |  |  |  |  |  |  |  |  |
Common stock repurchase holdback |  | 187,415,000 |  |  |  |  |  | 23,000 |  |  |  | 87,500,000 | 37,500,000 |  |
Repurchases of common stock, shares |  | 5,068,000 | 3,053,000 | 1,553,000 |  |  | 2,300,000 |  | 5,068,000 | 3,053,000 | 1,553,000 |  |  |  |
Percentage of initial shares to total fixed purchase price |  | 70.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum shares that could be issued under Accelerated Share Repurchase program |  | 25,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum % of shares that could be issued under Accelerated Share Repurchase Plan |  | 20.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchases of common stock, value |  | $ 224,915,000 | $ 74,871,000 | $ 34,953,000 |  |  |  |  | $ 51,000 | $ 31,000 | $ 15,000 |  | $ 187,364,000 | $ 74,840,000 | $ 34,938,000
Shares that would be deliverable upon settlement of accelerated share repurchase plan |  | 982,419 |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Amount of cash receipt from (payment to) bank; or stock received from (issuance to) bank in the settlement of the accelerated share repurchase agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 25 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6405686&loc=d3e22802-112653 + Details
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- Definition Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
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- Definition Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
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