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STOCKHOLDER'S EQUITY - Schedule of Company's Equity Units (Details) (USD $) In Millions, except Share data in Thousands, unless otherwise specified | 0 Months Ended | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 11, 2014 | Jun. 30, 2014 | Sep. 30, 2014
Capital Unit [Line Items] |  |  |
Number of Equity Units issued (in shares) | 2,875 | 2,875 |
Proceeds from Sale of Interest in Corporate Unit | $ 139.4 |  |
Equity Units, Contract Annual Rate | 4.75% |  |
Stock issued costs related to purchase contract liability | 19.7 |  | 19.7
Junior Subordinated Debt |  |  |
Capital Unit [Line Items] |  |  |
Proceeds from convertible debt | $ 143.8 | $ 143.8 |

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- Definition Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration. + References Reference 1: 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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