XML 56 R47.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Utility Regulatory Assets and Liabilities and Regulatory Matters - Narrative (Details) - USD ($) $ in Millions |  |  |  |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Jan. 28, 2022 | Nov. 09, 2021 | Feb. 08, 2021 | Oct. 08, 2020 | Jan. 28, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2021
Regulatory Assets |  |  |  |  |  |  |  |
Net unrealized gains (losses) |  |  |  |  |  | $ (397) | $ 96 |
Gas Utility |  |  |  |  |  |  |  |
Regulatory Assets |  |  |  |  |  |  |  |
Net unrealized gains (losses) |  |  |  |  |  | $ 2 | $ (1) | $ 35
PAPUC | Gas Utility |  |  |  |  |  |  |  |
Regulatory Assets |  |  |  |  |  |  |  |
Public utilities, requested rate increase (decrease), amount |  |  |  |  | $ 75 |  |  |
Public utilities, approved rate increase (decrease), amount |  |  |  | $ 20 |  |  |  |
Property, plant and equipment, net threshold |  |  |  | $ 2,875 |  |  |  |
Amortization period |  |  |  | 10 years |  |  |  |
PAPUC | Gas Utility | Beginning January 1, 2021 |  |  |  |  |  |  |  |
Regulatory Assets |  |  |  |  |  |  |  |
Public utilities, approved rate increase (decrease), amount |  |  |  | $ 10 |  |  |  |
PAPUC | Gas Utility | Beginning July 1, 2021 |  |  |  |  |  |  |  |
Regulatory Assets |  |  |  |  |  |  |  |
Public utilities, approved rate increase (decrease), amount |  |  |  | $ 10 |  |  |  |
PAPUC | Gas Utility | Subsequent event |  |  |  |  |  |  |  |
Regulatory Assets |  |  |  |  |  |  |  |
Public utilities, requested rate increase (decrease), amount | $ 83 |  |  |  |  |  |  |
PAPUC | Electric Utility |  |  |  |  |  |  |  |
Regulatory Assets |  |  |  |  |  |  |  |
Public utilities, requested rate increase (decrease), amount |  |  | $ 9 |  |  |  |  |
PAPUC | Electric Utility | Joint Petition |  |  |  |  |  |  |  |
Regulatory Assets |  |  |  |  |  |  |  |
Public utilities, requested rate increase (decrease), amount |  | $ 6 |  |  |  |  |  |

X
- Definition Property, Plant and Equipment, Net Threshold + References No definition available. + Details
Name: | ugi_PropertyPlantAndEquipmentNetThreshold
Namespace Prefix: | ugi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of public utility's approved rate increase (decrease) by regulatory agency. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesApprovedRateIncreaseDecreaseAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of public utility's requested rate increase (decrease) with regulatory agency. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amortization period for the recovery of regulatory asset, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_RegulatoryAssetAmortizationPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition 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. + References No definition available. + Details
Name: | us-gaap_RegulatoryAssetLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
Name: | us-gaap_UnrealizedGainLossOnDerivatives
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=ugi_GasUtilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAgencyAxis=ugi_PennsylvaniaPublicUtilityCommissionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ugi_PublicUtilityRequestedRateIncreaseTermAxis=ugi_PublicUtilityRequestedRateIncreaseTermOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ugi_PublicUtilityRequestedRateIncreaseTermAxis=ugi_PublicUtilityRequestedRateIncreaseTermTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=ugi_ElectricUtilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilitiesRegulatoryProceedingAxis=ugi_JointPetitionForApprovalOfSettlementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |