Commitment to invest in clean power and technology businesses.

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- Definition

Commitments included in planned capital expenditures

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No definition available.

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- Definition

Joint Obligations Of NEECH and NEER included NEER Amounts due in the current year

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No definition available.

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- Definition

Sets forth the number of megawatts that must be purchased annually within the specified time period of the agreement to avoid penalties or unfavorable effects on pricing, among other adverse consequences.

+ References

No definition available.

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Public Utilities, Termination of Operations, Payment

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- Definition

Required Capacity And Or Minimum Payments Abstract

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No definition available.

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- Definition

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

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No definition available.

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

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No definition available.

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

+ References

No definition available.

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- Definition

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

+ References

No definition available.

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- Definition

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

+ References

No definition available.

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

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No definition available.

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- Definition

For capacity payments, total capacity payments under contracts, substantially all of which are recoverable through the capacity clause.

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No definition available.

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For capacity payments, total energy payments under contracts, which are recoverable through the fuel clause.

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No definition available.

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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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
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- Definition

The total period end amount of plant in service and construction in progress net of accumulated depreciation for the utility's share of jointly owned electricity generation plant.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 980
-SubTopic 360
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 10.C)
-URI http://asc.fasb.org/extlink&oid=6500719&loc=d3e659983-123033

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- Definition

The proportionate share of interest (percent) in a jointly owned utility plant.

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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

Number of units of goods that must be purchased within the specified time period of the agreement to avoid penalties or unfavorable effects on pricing, among other adverse consequences.

+ References

No definition available.

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- 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.

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No definition available.

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The amount for the individual regulatory asset as itemized in a table of regulatory assets as of the end of the period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 980
-SubTopic 340
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382

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The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 980
-SubTopic 405
-Section 25
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6500807&loc=d3e48068-110394

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Commitments and Contingencies (Long-term Purchase Commitment) (Details) $ in Millions	1 Months Ended	3 Months Ended
	Jan. 31, 2018 USD ($) MW	Mar. 31, 2018 USD ($) MW	Mar. 31, 2017 USD ($)	Dec. 31, 2017 USD ($)
FPL [Member]
Required capacity and/or minimum payments [Abstract]
Capacity payments		$ 5	$ 20
Energy payments		$ 7	$ 16
FPL [Member] \| Pay-for-Performance Contracts [Member]
Long-term Purchase Commitment [Line Items]
Minimum total purchase commitments (in megawatts) \| MW		114
FPL [Member] \| Take-or-Pay Contract Range 1 [Member]
Long-term Purchase Commitment [Line Items]
Minimum annual purchase commitments (in megawatts) \| MW	375
FPL [Member] \| Capacity Charges [Member]
Required capacity and/or minimum payments [Abstract]
Remainder of 2018		$ 15
2019		20
2020		20
2021		20
2022		20
Thereafter		225
FPL [Member] \| Natural Gas, Including Transportation And Storage, Contract Minimum Payments [Member]
Required capacity and/or minimum payments [Abstract]
Remainder of 2018		1,485
2019		980
2020		940
2021		905
2022		895
Thereafter		11,240
FPL [Member] \| Coal Contract Minimum Payments [Member]
Required capacity and/or minimum payments [Abstract]
Remainder of 2018		30
2019		5
2020		0
2021		0
2022		0
Thereafter		0
FPL [Member] \| 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 2018		220
2019		290
2020		360
2021		390
2022		390
Thereafter		7,175
NextEra Energy Resources [Member]
Required capacity and/or minimum payments [Abstract]
Remainder of 2018		2,145
2019		540
2020		175
2021		145
2022		170
Thereafter		1,330
NextEra Energy Resources [Member] \| Contract Group 1 [Member]
Long-term Purchase Commitment [Line Items]
Commitment amount included in capital expenditures		2,900
NextEra Energy Resources [Member] \| Mountain Valley Pipeline [Member]
Required capacity and/or minimum payments [Abstract]
2019		65
2020		65
2021		65
2022		65
Thereafter		$ 1,035
Equity method investment, ownership percentage		31.00%
Corporate and Other [Member]
Required capacity and/or minimum payments [Abstract]
Remainder of 2018		$ 205
2019		15
2020		15
2021		10
2022		0
Thereafter		0
Commitment to invest		70
Joint obligations of NEECH and NEER included NEER amounts due in the current year		$ 170
Jointly Owned Electricity Generation Plant [Member] \| FPL [Member]
Long-term Purchase Commitment [Line Items]
Public utilities, termination of operations, payment	$ 90
Proportionate ownership percentage	20.00%
Regulatory asset	$ 150
Plant in service, net book value	$ 191
Regulatory asset amortization period (in years)	15 years
Regulatory liabilities				$ 62
Jointly Owned Electricity Generation Plant [Member] \| JEA [Member]
Long-term Purchase Commitment [Line Items]
Proportionate ownership percentage	80.00%
Jointly Owned Electricity Generation Plant [Member] \| Take-or-Pay Purchased Power Contract [Member] \| FPL [Member]
Long-term Purchase Commitment [Line Items]
Regulatory asset				$ 90
Jointly Owned Electricity Generation Plant [Member] \| Environmental Cost Recovery [Member] \| FPL [Member]
Long-term Purchase Commitment [Line Items]
Regulatory asset amortization period (in years)	10 years