EquityMethodInvestmentVotingRightsOwnershipPercentage

No definition available.

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- Definition

Amount of distribution received from equity method investee for return on investment, classified as operating activities. Excludes distribution for return of investment, classified as investing activities.

+ 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 https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(10))
-URI https://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(12))
-URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 21D
-URI https://asc.fasb.org/extlink&oid=126954810&loc=SL94080555-108585

+ Details

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Balance Type:	debit
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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI https://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

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Balance Type:	na
Period Type:	instant

- Definition

Amount of distribution received from equity method investee for return of investment, classified as investing activities. Excludes distribution for return on investment, classified as operating activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 21D
-URI https://asc.fasb.org/extlink&oid=126954810&loc=SL94080555-108585

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3179-108585

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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.

+ Details

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Investments in Unconsolidated Affiliates (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Investments In Unconsolidated Affiliates [Line Items]
Distributions from equity investments	$ 111	$ 56	$ 34
Distributions from equity investments, return of capital	$ 6	14	23
Electric Utilities and Infrastructure \| DATC
Investments In Unconsolidated Affiliates [Line Items]
Ownership interest	50.00%
Electric Utilities and Infrastructure \| Pioneer
Investments In Unconsolidated Affiliates [Line Items]
Ownership interest	50.00%
Gas Utilities and Infrastructure \| Sabal Trail
Investments In Unconsolidated Affiliates [Line Items]
Ownership interest	7.50%
Gas Utilities and Infrastructure \| ACP
Investments In Unconsolidated Affiliates [Line Items]
Ownership interest	47.00%
Gas Utilities and Infrastructure \| SustainRNG
Investments In Unconsolidated Affiliates [Line Items]
Ownership interest	29.68%
Gas Utilities and Infrastructure \| Sustain T&W
Investments In Unconsolidated Affiliates [Line Items]
Ownership interest	70.00%
Gas Utilities and Infrastructure \| Sustain Liberty
Investments In Unconsolidated Affiliates [Line Items]
Ownership interest	70.00%
Other \| NMC
Investments In Unconsolidated Affiliates [Line Items]
Ownership interest	17.50%
Board representation and voting rights, ownership percentage	25.00%
Piedmont
Investments In Unconsolidated Affiliates [Line Items]
Distributions from equity investments	$ 31	8	2
Distributions from equity investments, return of capital		$ 2	$ 2
Piedmont \| Gas Utilities and Infrastructure \| Cardinal
Investments In Unconsolidated Affiliates [Line Items]
Ownership interest	21.49%
Piedmont \| Gas Utilities and Infrastructure \| Pine Needle
Investments In Unconsolidated Affiliates [Line Items]
Ownership interest	45.00%
Piedmont \| Gas Utilities and Infrastructure \| Hardy Storage
Investments In Unconsolidated Affiliates [Line Items]
Ownership interest	50.00%