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Equity Stock Offering (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 3 Months Ended | 63 Months Ended |
--- | --- | --- | ---
Sep. 30, 2015 | Sep. 30, 2015 | May. 18, 2015
Class of Stock [Line Items] |  |  |
sale of shares by noncontrolling interest |  |  | $ 60
Sale of shares by noncontrolling interest, per share |  |  | $ 13.25
Treasury Stock, Shares, Acquired | 8.4 | 137.9 |
Common Stock [Member] |  |  |
Class of Stock [Line Items] |  |  |
sale of shares by noncontrolling interest |  |  | $ 40

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- Definition Number of shares that have been repurchased during the period and are being held in treasury. + 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 SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 + Details
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