Summary of Significant Accounting and Reporting Policies - Additional Information (Details) $ in Millions		1 Months Ended					2 Months Ended	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 26, 2023 USD ($)	Oct. 31, 2023 USD ($)	Jul. 31, 2023 USD ($)	May 31, 2023 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($) facility MW	Oct. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) facility MW	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($) MW	Apr. 30, 2023
Accounting Policies [Line Items]
Restricted cash and cash equivalents, current						$ 1,840		$ 1,210			$ 1,210
restricted cash related to margin cash collateral that is netted against derivative liabilities						1,541		1,056			1,056
Restricted cash related to margin cash collateral that is netted against derivative instruments						7
Gain in connection with sale								7	$ 171		11	$ 196
Customer deposits						560		615			615
Accrued construction-related expenditures						1,760		1,971			1,971
Supplier finance program, obligation						3,700		4,200			4,200
Florida Power & Light Company | Forecast
Accounting Policies [Line Items]
Tax credits sold							$ 337
Florida Power & Light Company
Accounting Policies [Line Items]
Increase (Decrease) in under Energy Recovery					$ 2,100
Natural Gas Mid-Course Correction, Value			$ 256	$ 379	$ 1,000
Restricted cash and cash equivalents, current						33		18			18
Customer deposits						543		586			586
Accrued construction-related expenditures						$ 559		506			506
Energy Recovery, Period					21 months
Fuel Mid-Course Correction, Period			6 months	8 months	9 months
Florida Power & Light Company | Storm Restoration Costs
Accounting Policies [Line Items]
Unrecovered Storm Costs to be Recovered through an Interim Storm Restoration Charge					$ 1,300
Regulatory Asset, Amortization Period													12 months
Disposed of by Sale [Member] | Florida Power & Light Company
Accounting Policies [Line Items]
Purchase price	$ 923
Disposed assets								616			616
Disposed liabilities								113			113
Disposed of by Sale [Member] | Florida Power & Light Company | Forecast
Accounting Policies [Line Items]
Gain in connection with sale		$ 400
Gain in connection with sale, after tax		$ 300
Five wind generation facilities and three solar facilities located in multiple regions | Disposed of by Sale [Member] | Subsidiaries of NextEra Energy Resources | United States, Geographically Dispersed
Accounting Policies [Line Items]
Number of wind generation facilities | facility										5
Number of solar generation facilities | facility										3
Generating capacity (MW) | MW										688
Purchase price										$ 566
Disposal Group, Including Discontinued Operation, Working Capital										$ 32
Five wind generation facilities and three solar facilities located in multiple regions | Disposed of by Sale [Member] | Subsidiaries of NextEra Energy Resources | NEP | United States, Geographically Dispersed
Accounting Policies [Line Items]
Ownership percentage sold										100.00%
Three wind facilities and one solar plus battery facility | Disposed of by Sale [Member] | Subsidiaries of NextEra Energy Resources | United States, Geographically Dispersed
Accounting Policies [Line Items]
Number of facilities under construction | facility						2
Three wind facilities and one solar plus battery facility | Disposed of by Sale [Member] | Subsidiaries of NextEra Energy Resources | NEP | United States, Geographically Dispersed
Accounting Policies [Line Items]
Ownership percentage sold						49.00%
Number of wind generation facilities | facility						3
Number of Solar Plus Battery Facilities | facility						1
Solar Plus Storage Facility Capacity | MW						65
Generating capacity (MW) | MW						1,437
Three wind facilities | Disposed of by Sale [Member] | Subsidiaries of NextEra Energy Resources | NEP | United States, Midwest Region
Accounting Policies [Line Items]
Ownership percentage sold						100.00%
Number of wind generation facilities						3
Generating capacity (MW) | MW						347
Three wind generation facilities and one solar plus battery facility and three wind facilities | Disposed of by Sale [Member] | NextEra Energy Resources
Accounting Policies [Line Items]
Purchase price						$ 805
Disposal Group, Including Discontinued Operation, Working Capital						8
Three wind generation facilities and one solar plus battery facility and three wind facilities | Disposed of by Sale [Member] | Current other liabilities | Subsidiaries of NextEra Energy Resources
Accounting Policies [Line Items]
Contract with Customer, Liability, Revenue Recognized											251
Three wind generation facilities and one solar plus battery facility and three wind facilities | Disposed of by Sale [Member] | Current other liabilities | Subsidiaries of NextEra Energy Resources | NEP and Differential Membership
Accounting Policies [Line Items]
Customer deposits						251
Three wind generation facilities and one solar plus battery facility and three wind facilities | Disposed of by Sale [Member] | Accounts Payable
Accounting Policies [Line Items]
Accrued construction-related expenditures						$ 810		$ 196			$ 196
Battery Storage Facility | Disposed of by Sale [Member] | NextEra Energy Resources | California
Accounting Policies [Line Items]
Gain in connection with sale									87			$ 87
Solar Plus Storage Facility Capacity | MW												230
Purchase price									191			$ 191
Disposal Group, Including Discontinued Operation, Working Capital									2			2
Gain (after tax) in connection with sale									$ 66			$ 66
Battery Storage Facility | Disposed of by Sale [Member] | NextEra Energy Resources | NEP | California
Accounting Policies [Line Items]
Ownership percentage sold									67.00%			67.00%