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Common Stock and Equity Based Compensation - Common Stock Share Activity (Details) (UGI Corporation Common Stock) | 12 Months Ended
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Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2012
Common Stock Share Activity |  |  |
Shares, Issued | 173,675,691 | 173,436,891 | 173,260,641
Shares, Outstanding | 171,643,287 | 168,930,632 | 167,754,033
Stock Issued During Period, Shares, Share-based Compensation, Gross | 94,950 | 238,800 | 176,250
Stock Issued And Outstanding During Period, Shares, Share-based Compensation, Gross | 3,023,090 | 4,172,307 | 1,413,638
Stock Issued During Period, Shares, Dividend Reinvestment Plan |  | 0 | 0
Stock Issued And Outstanding During Period, Shares, Dividend Reinvestment Plan |  | 93,253 | 157,491
Stock Repurchased During Period, Shares | 0 |  |
Stock Repurchased and Outstanding During Period, Shares | (1,227,654) |  |
Stock Reacquired During Period, Shares, Share-based Compensation | 0 | 0 | 0
Stock Reacquired And Outstanding During Period, Shares, Share-based Compensation | (1,164,942) | (1,552,905) | (394,530)
Shares, Issued | 173,770,641 | 173,675,691 | 173,436,891
Shares, Outstanding | 172,273,781 | 171,643,287 | 168,930,632
Treasury Stock |  |  |
Common Stock Share Activity |  |  |
Shares, Issued | 2,032,404 | 4,506,259 | 5,506,608
Stock Issued During Period, Shares, Share-based Compensation, Gross | 2,928,140 | 3,933,507 | 1,237,388
Stock Issued During Period, Shares, Dividend Reinvestment Plan |  | 93,253 | 157,491
Stock Repurchased During Period, Shares | (1,227,654) |  |
Stock Reacquired During Period, Shares, Share-based Compensation | (1,164,942) | (1,552,905) | (394,530)
Shares, Issued | 1,496,860 | 2,032,404 | 4,506,259

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- Definition Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the 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 + Details
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- Definition Number of shares issued during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the shareholders to reinvest dividends paid to them by the entity on new issues of stock by the entity. + 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 + Details
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- Definition Gross number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP). Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans. + References No definition available. + 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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