Debt Instrument, Convertible, Default Conversion Ratio

No definition available.

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- Definition

Debt Instrument, Redemption Face Amount

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Line of Credit Facility, Accordion Feature, Increase Limit

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Receivables Facility, Accordion Feature, Increase Limit

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Receivables Facility, Maximum Borrowing Capacity

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

The price per share of the conversion feature embedded in the debt instrument.

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- Definition

Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- 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.

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- Definition

Amount of principal of debt repaid.

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Debt - Narrative (Details)		1 Months Ended				3 Months Ended		9 Months Ended
Debt - Narrative (Details)	Aug. 07, 2025 USD ($)	Jun. 30, 2025 USD ($) $ / shares	May 31, 2025 USD ($)	Feb. 28, 2025 USD ($)	Oct. 31, 2024 USD ($)	Jun. 30, 2025 USD ($) $ / shares	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($) $ / shares	Jun. 30, 2024 USD ($)	Jul. 31, 2025 USD ($)	Apr. 30, 2025 USD ($)	Nov. 30, 2024 USD ($)	Sep. 30, 2024 USD ($)
Debt Instrument [Line Items]
Loss on extinguishments of debt						$ 10,000,000	$ 7,000,000	$ 10,000,000	$ 7,000,000
AmeriGas Partners
Debt Instrument [Line Items]
Intercompany loan				$ 221,000,000
Notes payable		$ 200,000,000				200,000,000		200,000,000
Senior Notes Due 2030 \| Senior Notes \| AmeriGas Partners and AmeriGas Finance Corp.
Debt Instrument [Line Items]
Principal amount			$ 550,000,000
Interest rate			9.50%
Senior Notes Due 2030 \| Senior Notes \| Subsequent event \| Utilities
Debt Instrument [Line Items]
Principal amount										$ 150,000,000
Interest rate										5.10%
Senior Notes due 2035 \| Senior Notes \| Subsequent event \| Utilities
Debt Instrument [Line Items]
Principal amount										$ 125,000,000
Interest rate										5.68%
Senior Notes Due 2029 \| Senior Notes \| Utilities
Debt Instrument [Line Items]
Principal amount												$ 50,000,000
Interest rate												5.24%
Senior Notes Due 2034 \| Senior Notes \| Utilities
Debt Instrument [Line Items]
Principal amount												$ 125,000,000
Interest rate												5.52%
Mountaineer 2025 Credit Agreement \| Credit Agreement \| Mountaineer \| Revolver
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 150,000,000
Increase to limit			250,000,000
Mountaineer 2025 Credit Agreement \| Credit Agreement \| Mountaineer \| Letters of credit
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 20,000,000
Senior Notes Due June 1, 2035 \| Senior Notes \| Mountaineer
Debt Instrument [Line Items]
Principal amount											$ 50,000,000
Interest rate											6.11%
Senior Notes Due June 1, 2037 \| Senior Notes \| Mountaineer
Debt Instrument [Line Items]
Principal amount											$ 20,000,000
Interest rate											6.21%
Energy Services Accounts Receivable Securitization Facility \| Energy Services \| Receivables Facility
Debt Instrument [Line Items]
Option to increase					$ 50,000,000
Energy Services Accounts Receivable Securitization Facility \| Energy Services \| Period October 18, 2024 to April 30, 2025 \| Receivables Facility
Debt Instrument [Line Items]
Maximum borrowing capacity					150,000,000
Energy Services Accounts Receivable Securitization Facility \| Energy Services \| Period May 1, 2025 to October 17, 2025 \| Receivables Facility
Debt Instrument [Line Items]
Maximum borrowing capacity					75,000,000
AmeriGas Partners Senior Notes \| Senior Notes \| AmeriGas Partners
Debt Instrument [Line Items]
Interest rate			5.875%
Principal balance			$ 664,000,000
Loss on extinguishments of debt		9,000,000
UGI Corporation Credit Facility Agreement \| Credit Agreement \| Revolver
Debt Instrument [Line Items]
Maximum borrowing capacity		475,000,000			475,000,000	475,000,000		475,000,000
Proceeds				$ 221,000,000
Unused borrowing capacity		$ 279,000,000				$ 279,000,000		$ 279,000,000
UGI Corporation Credit Facility Agreement \| Credit Agreement \| Letters of credit
Debt Instrument [Line Items]
Maximum borrowing capacity					10,000,000
UGI Corporation Credit Facility Agreement \| Credit Agreement \| Secured Debt
Debt Instrument [Line Items]
Maximum borrowing capacity					400,000,000
UGI Corporation Credit Facility Agreement \| Credit Agreement \| Subsequent event \| Revolver
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 300,000,000
Debt term	1 year
5.50 Percent Senior Notes \| Senior Notes \| AmeriGas Partners
Debt Instrument [Line Items]
Interest rate		5.50%				5.50%		5.50%
Early redemption notice, aggregate principal		$ 218,000,000				$ 218,000,000		$ 218,000,000
AmeriGas Senior Secured Revolving Credit Facility \| Credit Agreement \| Revolver
Debt Instrument [Line Items]
Maximum borrowing capacity					$ 300,000,000								$ 200,000,000
UGI Corporation Senior Notes \| Senior Notes
Debt Instrument [Line Items]
Principal amount		$ 700,000,000				$ 700,000,000	$ 700,000,000	$ 700,000,000	$ 700,000,000
Interest rate							5.00%		5.00%
Default conversion settlement ratio								1
Conversion ratio								0.0362319
Conversion price (in dollars per share) \| $ / shares		$ 27.60				$ 27.60		$ 27.60
Unamortized debt issuance costs		$ 13,000,000				$ 13,000,000		$ 13,000,000
Interest expense						10,000,000		30,000,000
Effective interest rate (as a percentage)							5.68%		5.68%
UGI Corporation Senior Notes \| Senior Notes \| Level 2
Debt Instrument [Line Items]
Long-term debt		$ 967,000,000				$ 967,000,000		$ 967,000,000					$ 744,000,000