Commitments and Contingencies (Long-term Purchase Commitment) (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
NEER Segment
Required capacity and/or minimum payments [Abstract]
Remainder of 2022	$ 4,795
2023	565
2024	175
2025	80
2026	65
Thereafter	525
Commitment to invest	310
Joint Obligations Remainder Current Year	1,040
Joint Obligations Second Year	225
Joint Obligations Third Year	5
Joint Obligations Fourth Year	5
Joint Obligations Fifth Year	0
Joint Obligations After Fifth Year	5
Contract Group 1 [Member] \| NEER Segment
Long-term Purchase Commitment [Line Items]
Commitment amount included in capital expenditures	5,000
Mountain Valley Pipeline \| NEER Segment
Required capacity and/or minimum payments [Abstract]
Amounts Excluded from Required Capacity And/Or Minimum Payments, Annual Commitment	$ 70
Equity method investment, ownership percentage	31.90%
Florida Power & Light Company
Required capacity and/or minimum payments [Abstract]
Remainder of 2022	$ 780
2023	1,005
2024	980
2025	910
2026	840
Thereafter	8,570
Related Party Transaction, Amounts of Transaction	102	$ 103
Florida Power & Light Company \| Sabal Trail and Florida Southeast Connection [Member] \| Natural Gas, Including Transportation And Storage, Contract Minimum Payments [Member]
Required capacity and/or minimum payments [Abstract]
Remainder of 2022	310
2023	410
2024	410
2025	405
2026	400
Thereafter	5,960
Florida Power & Light Company \| Consolidation, Eliminations [Member]
Required capacity and/or minimum payments [Abstract]
Related Party Transaction, Amounts of Transaction	$ 26	$ 26

Estimated Amounts Excluded from Required Capacity And/Or Minimum Payments, Annual Commitment

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- Definition

Commitment to invest in clean power and technology businesses.

+ References

No definition available.

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- Definition

Commitments included in planned capital expenditures

+ References

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- Definition

Joint obligations of NEECH and NEER included in NEER amounts above due after the fifth year

+ References

No definition available.

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Joint obligations of NEECH and NEER included in NEER amounts above due in the fifth year

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Joint obligations of NEECH and NEER included in the NEER amounts above due in the fourth year

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- Definition

Joint Obligations of NEECH and NEER included in the NEER amounts above due in the remainder of the current year

+ References

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- Definition

Joint Obligations of NEECH and NEER included in the NEER amounts above due in the second year

+ References

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- Definition

Joint obligations of NEECH and NEER included in NEER amounts above due in the third year

+ References

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- Definition

Required Capacity And Or Minimum Payments Abstract

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- Definition

Estimated required capacity and/or minimum payments after the fifth year.

+ References

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- Definition

Estimated required capacity and/or minimum payments for the fifth year.

+ References

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Estimated required capacity and/or minimum payments for the fourth year.

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Estimated required capacity and/or minimum payments for the remainder of the current year.

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Estimated required capacity and/or minimum payments for the second year.

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Estimated required capacity and/or minimum payments for the third year.

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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
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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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- Definition

Amount of transactions with related party during the financial reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
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