Related Party Transactions	9 Months Ended
Jun. 30, 2017
Related Party Transactions [Abstract]
Related Party Transactions	Note 12 — Related Party Transactions UGI provides certain financial and administrative services to UGI Utilities. UGI bills UGI Utilities monthly for all direct expenses incurred by UGI on behalf of UGI Utilities and an allocated share of indirect corporate expenses incurred or paid with respect to services provided to UGI Utilities. The allocation of indirect UGI corporate expenses to UGI Utilities utilizes a weighted, three-component formula comprising revenues, operating expenses and net assets employed and considers UGI Utilities’ relative percentage of such items to the total of such items for all UGI operating subsidiaries for which general and administrative services are provided. Management believes that this allocation method is reasonable and equitable to UGI Utilities and this allocation method has been accepted by the PUC in past rate case proceedings and management audits as a reasonable method of allocating such expenses. These billed expenses are classified as “Operating and administrative expenses — related parties” on the Condensed Consolidated Statements of Income. In addition, UGI Utilities provides limited administrative services to UGI and certain of UGI’s subsidiaries under PUC affiliated interest agreements. Amounts billed to these entities by UGI Utilities totaled $562 and $3,420 during the three and nine months ended June 30, 2017, respectively, and $1,752 and $3,904 during the three and nine months ended June 30, 2016, respectively. From time to time, UGI Utilities is a party to SCAAs with Energy Services which have terms of up to three years. Under the SCAAs, UGI Utilities has, among other things, released certain storage and transportation contracts (subject to recall for operational purposes) to Energy Services for the terms of the SCAAs. UGI Utilities also transferred certain associated storage inventories upon the commencement of the SCAAs, receives a transfer of storage inventories at the end of the SCAAs, and makes payments associated with refilling storage inventories during the term of the SCAAs. UGI Utilities incurred costs associated with Energy Services’ SCAAs totaling $9,777 and $12,272 during the three and nine months ended June 30, 2017, respectively, and $4,358 and $6,387 during the three and nine months ended June 30, 2016, respectively. Energy Services, in turn, provides a firm delivery service and makes certain payments to UGI Utilities for its various obligations under the SCAAs. These payments totaled $729 and $2,027 during the three and nine months ended June 30, 2017, respectively, and $493 and $1,510 during the three and nine months ended June 30, 2016, respectively. In conjunction with the SCAAs, UGI Utilities received security deposits from Energy Services. The amounts of such security deposits, which are included in “Other current liabilities” on the Condensed Consolidated Balance Sheets, were $11,040 at June 30, 2017 and $8,100 as of September 30, 2016 and June 30, 2016. UGI Utilities reflects the historical cost of the gas storage inventories and any exchange receivable from Energy Services (representing amounts of natural gas inventories used but not yet replenished by Energy Services) in “Inventories” on the Condensed Consolidated Balance Sheets. The carrying values of these gas storage inventories at June 30, 2017, September 30, 2016 and June 30, 2016, comprising approximately 3.6 bcf, 4.6 bcf and 2.7 bcf of natural gas, were $10,662, $11,148 and $5,100, respectively. UGI Utilities has gas supply and delivery service agreements with Energy Services pursuant to which Energy Services provides certain gas supply and related delivery service to Gas Utility primarily during the heating-season months of November through March. The aggregate amount of these transactions (exclusive of transactions pursuant to the SCAAs) during the three and nine months ended June 30, 2017 totaled $2,137 and $73,872, respectively. During the three and nine months ended June 30, 2016, such purchases totaled $2,138 and $61,193, respectively. From time to time, UGI Utilities sells natural gas or pipeline capacity to Energy Services. During the three and nine months ended June 30, 2017, revenues associated with such sales to Energy Services totaled $10,554 and $43,836, respectively. During the three and nine months ended June 30, 2016, revenues associated with such sales to Energy Services totaled $4,514 and $26,134, respectively. Also from time to time, UGI Utilities purchases natural gas, pipeline capacity and electricity from Energy Services (in addition to those transactions already described above) and purchases a firm storage service from UGI Storage Company, a subsidiary of Energy Services, under one-year agreements. During the three and nine months ended June 30, 2017, such purchases totaled $14,675 and $75,783, respectively. During the three and nine months ended June 30, 2016, such purchases totaled $6,928 and $30,032, respectively.

Note 12 — Related Party Transactions

UGI provides certain financial and administrative services to UGI Utilities. UGI bills UGI Utilities monthly for all direct expenses incurred by UGI on behalf of UGI Utilities and an allocated share of indirect corporate expenses incurred or paid with respect to services provided to UGI Utilities. The allocation of indirect UGI corporate expenses to UGI Utilities utilizes a weighted, three-component formula comprising revenues, operating expenses and net assets employed and considers UGI Utilities’ relative percentage of such items to the total of such items for all UGI operating subsidiaries for which general and administrative services are provided. Management believes that this allocation method is reasonable and equitable to UGI Utilities and this allocation method has been accepted by the PUC in past rate case proceedings and management audits as a reasonable method of allocating such expenses. These billed expenses are classified as “Operating and administrative expenses — related parties” on the Condensed Consolidated Statements of Income. In addition, UGI Utilities provides limited administrative services to UGI and certain of UGI’s subsidiaries under PUC affiliated interest agreements. Amounts billed to these entities by UGI Utilities totaled $562 and $3,420 during the three and nine months ended June 30, 2017, respectively, and $1,752 and $3,904 during the three and nine months ended June 30, 2016, respectively.

From time to time, UGI Utilities is a party to SCAAs with Energy Services which have terms of up to three years. Under the SCAAs, UGI Utilities has, among other things, released certain storage and transportation contracts (subject to recall for operational purposes) to Energy Services for the terms of the SCAAs. UGI Utilities also transferred certain associated storage inventories upon the commencement of the SCAAs, receives a transfer of storage inventories at the end of the SCAAs, and makes payments associated with refilling storage inventories during the term of the SCAAs. UGI Utilities incurred costs associated with Energy Services’ SCAAs totaling $9,777 and $12,272 during the three and nine months ended June 30, 2017, respectively, and $4,358 and $6,387 during the three and nine months ended June 30, 2016, respectively. Energy Services, in turn, provides a firm delivery service and makes certain payments to UGI Utilities for its various obligations under the SCAAs. These payments totaled $729 and $2,027 during the three and nine months ended June 30, 2017, respectively, and $493 and $1,510 during the three and nine months ended June 30, 2016, respectively. In conjunction with the SCAAs, UGI Utilities received security deposits from Energy Services. The amounts of such security deposits, which are included in “Other current liabilities” on the Condensed Consolidated Balance Sheets, were $11,040 at June 30, 2017 and $8,100 as of September 30, 2016 and June 30, 2016.

UGI Utilities reflects the historical cost of the gas storage inventories and any exchange receivable from Energy Services (representing amounts of natural gas inventories used but not yet replenished by Energy Services) in “Inventories” on the Condensed Consolidated Balance Sheets. The carrying values of these gas storage inventories at June 30, 2017, September 30, 2016 and June 30, 2016, comprising approximately 3.6 bcf, 4.6 bcf and 2.7 bcf of natural gas, were $10,662, $11,148 and $5,100, respectively.

UGI Utilities has gas supply and delivery service agreements with Energy Services pursuant to which Energy Services provides certain gas supply and related delivery service to Gas Utility primarily during the heating-season months of November through March. The aggregate amount of these transactions (exclusive of transactions pursuant to the SCAAs) during the three and nine months ended June 30, 2017 totaled $2,137 and $73,872, respectively. During the three and nine months ended June 30, 2016, such purchases totaled $2,138 and $61,193, respectively.

From time to time, UGI Utilities sells natural gas or pipeline capacity to Energy Services. During the three and nine months ended June 30, 2017, revenues associated with such sales to Energy Services totaled $10,554 and $43,836, respectively. During the three and nine months ended June 30, 2016, revenues associated with such sales to Energy Services totaled $4,514 and $26,134, respectively. Also from time to time, UGI Utilities purchases natural gas, pipeline capacity and electricity from Energy Services (in addition to those transactions already described above) and purchases a firm storage service from UGI Storage Company, a subsidiary of Energy Services, under one-year agreements. During the three and nine months ended June 30, 2017, such purchases totaled $14,675 and $75,783, respectively. During the three and nine months ended June 30, 2016, such purchases totaled $6,928 and $30,032, respectively.