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Error in Method of Accounting For Certain Customer Credits (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended |  | 3 Months Ended | 9 Months Ended
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Jun. 30, 2013 Impact on net income attributable to UGI Corporation [Member] | Jun. 30, 2013 Impact on net income attributable to UGI Corporation [Member] | Sep. 30, 2012 Impact on net income attributable to UGI Corporation [Member] Prior fiscal year impact [Member] | Jun. 30, 2013 Revenues and accounts receivable [Member] | Jun. 30, 2013 Revenues and accounts receivable [Member]
Correction of Error [Line Items] |  |  |  |  |
Quantifying Misstatement in Current Year Financial Statements, Amount | $ 0.6 | $ 0.9 |  | $ 3.6 | $ 5.1
Impact of Customer Credit Adjustment |  |  | $ 0.7 |  |

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- Definition Impact of Customer Credit Adjustment as of the end of the prior fiscal year. + References No definition available. + Details
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- Definition Amount of each individual error being corrected in the correcting adjustment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 1.N.Q3) -URI http://asc.fasb.org/extlink&oid=6369664&loc=d3e30840-122693 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 1 -Section N + Details
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