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Commitments and Contingencies (Details Textual) (USD $) In Millions, unless otherwise specified | 3 Months Ended |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 31, 2013 Environmental matters [Member] | Dec. 31, 2013 Environmental matters [Member] CPG MGP [Member] | Dec. 31, 2013 Environmental matters [Member] PNG MGP [Member] | Dec. 31, 2013 CPG and PNG COAs [Member] UGI Utilities [Member] | Dec. 31, 2012 CPG and PNG COAs [Member] UGI Utilities [Member] | Sep. 30, 2008 FTC Investigation [Member] Partnership [Member] lb
Commitments and Contingencies [Line Items] |  |  |  |  |  |
Environmental expenditures cap during calendar year |  | $ 1.8 | $ 1.1 |  |  |
Accrual for environmental loss contingencies |  |  |  | $ 16.9 | $ 15.0 |
Base year for determination of investigation and remediation cost (in years) | 5 years |  |  |  |  |
Amount of propane in cylinders before reduction (in pounds) |  |  |  |  |  | 17
Amount of propane in cylinders after reduction (in pounds) |  |  |  |  |  | 15

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- Definition Total costs accrued as of the balance sheet date for environmental loss contingencies. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 96-1 -Paragraph 161 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14326-108349 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6395460&loc=d3e13647-108346 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 9 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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