Area Of Property To Be Constructed

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- Definition

Term Of Contract

+ References

No definition available.

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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- Definition

Amount of investment in equity security without readily determinable fair value.

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-Name Accounting Standards Codification
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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.

+ References

No definition available.

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Summary of Significant Accounting Policies - Equity Method Investments (Details) $ in Millions	12 Months Ended
	Sep. 30, 2020 USD ($) mi	Sep. 30, 2019 USD ($)	Aug. 01, 2019	Sep. 30, 2018 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Investments	$ 256	$ 242
Equity method investments	200	190		$ 88
Pennant
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Equity method investments	$ 94	91
Southern Company \| PennEast
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Ownership percentage (as a percentage)	20.00%
Enbridge Inc \| PennEast
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Ownership percentage (as a percentage)	20.00%
South Jersey Industries \| PennEast
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Ownership percentage (as a percentage)	20.00%
UGI PennEast, LLC \| PennEast
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Equity method investments	$ 96	$ 85
New Jersey Resources \| PennEast
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Ownership percentage (as a percentage)	20.00%
PennEast
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Area of natural gas pipeline to be constructed (in miles) \| mi	120
Pipeline contract term	15 years
Affiliated Entity \| UGI PennEast, LLC \| PennEast
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Ownership percentage (as a percentage)	20.00%
Pennant \| Affiliated Entity \| CMG
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Percentage of voting interests acquired		47.00%	47.00%