Inventories - Narrative (Details) - UGI Utilities	12 Months Ended
Sep. 30, 2020 storage_agreement
Public Utilities, Inventory
Number of storage agreements	3
Storage agreement term (up to)	3 years

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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