Summary of Significant Accounting and Reporting Policies (Details) $ in Thousands, € in Millions					1 Months Ended		3 Months Ended			6 Months Ended			12 Months Ended
		Jan. 01, 2023 USD ($)	Jul. 26, 2021 USD ($) facility MW	Feb. 29, 2020 EUR (€) MW	Jan. 31, 2022 USD ($)	Feb. 29, 2020 EUR (€) solar_generation_facility	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)		Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)		Dec. 31, 2025 USD ($) MW	Dec. 31, 2024 USD ($) MW	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($) MW		Sep. 29, 2020 USD ($)	Mar. 31, 2020 USD ($)		Dec. 31, 2019 USD ($)
Accounting Policies [Line Items]
Restricted Cash and Cash Equivalents							$ 549,000			$ 549,000						$ 441,000
Restricted cash related to margin cash collateral that is netted against derivative instruments							141,000			141,000						183,000
restricted cash related to margin cash collateral that is netted against derivative liabilities							119,000			119,000						136,000
Gain in connection with sale							(7,000)	$ 17,000		7,000	$ 290,000
Customer deposits							486,000			486,000						474,000
Bad debt expense, including credit losses										146,000	43,000
Noncurrent accounts receivable allowances							142,000			142,000
Retained Earnings							45,114,000	41,574,000		45,114,000	41,574,000				$ 45,730,000	44,929,000			$ 40,875,000		$ 41,360,000
Gulf Power Segment
Accounting Policies [Line Items]
Regulatory Assets, Coal Generating Assets, Remaining Net Book Value															462,000
Hurricane Sally | Gulf Power Segment
Accounting Policies [Line Items]
Recoverable storm costs							185,000
FPL [Member]
Accounting Policies [Line Items]
Restricted Cash and Cash Equivalents							79,000			79,000						135,000
Customer deposits							473,000			473,000						468,000	[1]
Retained Earnings							31,488,000	29,882,000	[2]	31,488,000	29,882,000	[2]			31,040,000	$ 29,228,000	[1]		28,079,000	[2]	25,797,000	[2]
FPL [Member] | Forecast [Member]
Accounting Policies [Line Items]
Base Rate Plan Term					4 years
Increase In Base Rate Revenues		$ 605,000			$ 1,075,000
Renewable Energy Assets, Power Generation Capacity | MW													894	894
Base Rate Adjustments, Renewable Energy Assets													$ 140,000	$ 140,000
Regulatory Return On Common Equity					11.50%
Basis Point Incentive					0.50%
Combined Utility Rate Plan Term					2 years
Separate Utility Rate Plan Term					2 years
NextEra Energy Resources [Member] | Subsequent Event
Accounting Policies [Line Items]
Proceeds from sale of interest in partnership unit			$ 563,000
Assumption of noncontrolling interest and debt			$ 270,000
Subsidiary of NextEra Energy Resources
Accounting Policies [Line Items]
Solar Generating Capacity | MW																100
Solar Plus Storage Facility Capacity | MW																30
Customer deposits																$ 155,000
Subsidiary of NextEra Energy Resources | Subsequent Event | United States, Midwest and West Regions
Accounting Policies [Line Items]
Generating capacity (MW) | MW			467
Number of wind generation facilities | facility			3
Number of solar generation facilities | facility			1
Subsidiary of NextEra Energy Resources | Subsequent Event | United States, Geographically Dispersed
Accounting Policies [Line Items]
Generating capacity (MW) | MW			122
Number of solar generation facilities | facility			4
Subsidiary of NextEra Energy Resources | Solar-Plus-Storage Facility
Accounting Policies [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners																100.00%
Subsidiary of NextEra Energy Resources | NEP | Subsequent Event | United States, Midwest and West Regions
Accounting Policies [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners			100.00%
Subsidiary of NextEra Energy Resources | NEP | Subsequent Event | United States, Geographically Dispersed
Accounting Policies [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners			33.30%
Noncontrolling Interest [Member]
Accounting Policies [Line Items]
Retained Earnings							8,182,000	4,501,000		8,182,000	4,501,000				8,352,000	$ 8,416,000			4,472,000		4,355,000
Retained Earnings [Member]
Accounting Policies [Line Items]
Retained Earnings							25,773,000	25,511,000		25,773,000	25,511,000				26,273,000	25,363,000			24,922,000		25,199,000
Retained Earnings [Member] | Adoption of accounting standards update [Member]
Accounting Policies [Line Items]
Retained Earnings	[3]																				(11,000)
Retained Earnings [Member] | FPL [Member]
Accounting Policies [Line Items]
Retained Earnings							10,843,000	$ 10,424,000	[2]	10,843,000	10,424,000	[2]			$ 10,396,000	9,619,000	[2]		$ 9,621,000	[2]	$ 8,939,000	[2]
Other Current Assets [Member]
Accounting Policies [Line Items]
Restricted cash and cash equivalents, current							544,000			544,000						374,000
Other Current Assets [Member] | FPL [Member]
Accounting Policies [Line Items]
Restricted cash and cash equivalents, current							$ 74,000			$ 74,000						$ 93,000
Two solar generation facilities located in Spain | Disposed of by Sale [Member]
Accounting Policies [Line Items]
Gain in connection with sale											270,000
Gain (after tax) in connection with sale											$ 270,000
Two solar generation facilities located in Spain | Disposed of by Sale [Member] | NextEra Energy Resources [Member]
Accounting Policies [Line Items]
Number of generation facilities sold | solar_generation_facility						2
Generating capacity (MW) | MW				99.8
Purchase price				€ 111		€ 111												$ 121,000

[1] Amounts have been retrospectively adjusted to reflect the merger of FPL and Gulf Power Company, see Note 5 – Merger of FPL and Gulf Power Company.

[2] Amounts have been retrospectively adjusted to reflect the merger of FPL and Gulf Power Company, see Note 5 – Merger of FPL and Gulf Power Company.

[3] See Note 11 – Measurement of Credit Losses on Financial Instruments.