Summary of Significant Accounting and Reporting Policies - Additional Information (Details)		1 Months Ended				3 Months Ended			9 Months Ended		48 Months Ended
	Sep. 01, 2022	Jan. 31, 2023 USD ($)	Sep. 30, 2022 USD ($)	Aug. 31, 2022	Dec. 31, 2021 USD ($) facility MW	Sep. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) MW	Sep. 30, 2021 USD ($)	Dec. 31, 2025 USD ($) kWh
Accounting Policies [Line Items]
Restricted Cash and Cash Equivalents			$ 1,459,000,000		$ 677,000,000	$ 1,459,000,000			$ 1,459,000,000
Restricted cash related to margin cash collateral that is netted against derivative instruments			261,000,000		121,000,000	261,000,000			261,000,000
restricted cash related to margin cash collateral that is netted against derivative liabilities			1,258,000,000		172,000,000	1,258,000,000			1,258,000,000
Gain in connection with sale						171,000,000		$ 13,000,000	196,000,000	$ 20,000,000
Customer deposits			525,000,000		485,000,000	525,000,000			525,000,000
Accrued construction-related expenditures			1,891,000,000		1,378,000,000	1,891,000,000			1,891,000,000
Bad debt expense, including credit losses									(85,000,000)	$ (143,000,000)
Noncurrent accounts receivable allowances					127,000,000
Florida Power & Light Company
Accounting Policies [Line Items]
Restricted Cash and Cash Equivalents			33,000,000		53,000,000	33,000,000			33,000,000
Customer deposits			517,000,000		478,000,000	517,000,000			517,000,000
Accrued construction-related expenditures			549,000,000		$ 601,000,000	549,000,000			549,000,000
Regulatory return on common equity	10.80%
ROE, treasury rate, thirty year average threshold				2.49%
Earned regulatory ROE threshold below which retail base rate relief may be sought	9.80%
Earned regulatory ROE threshold above which retail base rate reduction may be sought	11.80%
Number of customers experiencing outages			2,100,000
Recoverable storm restoration costs			1,100,000,000
Storm reserve, value			220,000,000			220,000,000			220,000,000
Recoverable restoration costs in excess of storm reserve			900,000,000			900,000,000			900,000,000
Accrued storm restoration costs			1,300,000,000			1,300,000,000			1,300,000,000
Florida Power & Light Company | Forecast
Accounting Policies [Line Items]
Customer refundable fees		$ 25,000,000
Decrease in annualized retail base revenues beginning January 1, 2023		$ 70,000,000
Maximum storm surcharge											$ 4
Increment of usage in Kwh on which storm surcharge is based | kWh											1,000
Cost of recovery, period											12 months
Threshold of storm restoration costs in any given calendar year at which surcharge may be increased											$ 800,000,000
Seven wind facilities, six solar facilities and storage capacity | Disposed of by Sale [Member] | Subsidiaries of NextEra Energy Resources | United States, Geographically Dispersed
Accounting Policies [Line Items]
Number of wind generation facilities | facility					7
Number of solar generation facilities | facility					6
Number of facilities under construction | facility					3
Generating capacity (MW) | MW					2,520
Solar Plus Storage Facility Capacity | MW					115
Seven wind facilities, six solar facilities and storage capacity | Disposed of by Sale [Member] | Subsidiaries of NextEra Energy Resources | Subsidiaries of NextEra Energy Resources | United States, Geographically Dispersed
Accounting Policies [Line Items]
Ownership percentage sold					100.00%
Seven wind facilities, six solar facilities and storage capacity | Disposed of by Sale [Member] | NextEra Energy Resources | NEP | United States, Geographically Dispersed
Accounting Policies [Line Items]
Ownership percentage sold					50.00%
Seven wind facilities, six solar facilities and storage capacity | Disposed of by Sale [Member] | NextEra Energy Resources | Third Party | United States, Geographically Dispersed
Accounting Policies [Line Items]
Ownership percentage sold					50.00%
Seven wind facilities, six solar facilities and storage capacity | Disposed of by Sale [Member] | Current other liabilities | Subsidiaries of NextEra Energy Resources | United States, Geographically Dispersed
Accounting Policies [Line Items]
Customer deposits					$ 668,000,000
Contract with Customer, Liability, Revenue Recognized						88,000,000	$ 551,000,000
Seven wind facilities, six solar facilities and storage capacity | Disposed of by Sale [Member] | Accounts Payable
Accounting Policies [Line Items]
Accrued construction-related expenditures			142,000,000		$ 970,000,000	142,000,000			142,000,000
Battery Storage Facility | Disposed of by Sale [Member] | NextEra Energy Resources | California
Accounting Policies [Line Items]
Purchase price			191,000,000			191,000,000			191,000,000
Disposal Group, Including Discontinued Operation, Working Capital			$ 3,000,000			3,000,000			3,000,000
Gain in connection with sale						87,000,000			87,000,000
Gain (after tax) in connection with sale						$ 66,000,000			$ 66,000,000
Solar Plus Storage Facility Capacity | MW									230
Battery Storage Facility | Disposed of by Sale [Member] | NextEra Energy Resources | NEP | California
Accounting Policies [Line Items]
Ownership percentage sold			67.00%			67.00%			67.00%