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Summary of Significant Accounting and Reporting Policies - Additional Information (Details) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended | 36 Months Ended | 48 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2025 USD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2025 USD ($) | Jun. 30, 2024 USD ($) | Dec. 31, 2029 kW MW | Dec. 31, 2028 kW MW | Dec. 31, 2025 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2029 USD ($) | Dec. 31, 2029 USD ($) | Jul. 23, 2025 USD ($)
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Restricted cash and cash equivalents, current | $ 254.0 |  | $ 254.0 |  |  |  |  | $ 159.0 |  |  |
Cash Received, Derivative, Exchange Traded |  |  |  |  |  |  |  | (244.0) |  |  |
Restricted Cash |  |  |  |  |  |  |  | (85.0) |  |  |
Restricted cash related to margin cash collateral that is netted against derivative assets |  |  |  |  |  |  |  | (279.0) |  |  |
restricted cash related to margin cash collateral that is netted against derivative liabilities | 87.0 |  | 87.0 |  |  |  |  |  |  |  |
Supplier finance program, obligation | 1,100.0 |  | 1,100.0 |  |  |  |  | 4,000.0 |  |  |
Gain in connection with sale | 18.0 | $ 29.0 | 54.0 | $ 87.0 |  |  |  |  |  |  |
Investment in equity method investees | 5,401.0 |  | 5,401.0 |  |  |  |  | 6,118.0 |  |  |
Distributions of earnings from equity method investees |  |  | 181.0 | 322.0 |  |  |  |  |  |  |
Florida Power & Light Company |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Tax credits sold |  |  | 310.0 | 511.0 |  |  |  |  |  |  |
Florida Power & Light Company |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Restricted cash and cash equivalents, current | 40.0 |  | 40.0 |  |  |  |  | 101.0 |  |  |
Unpaid Storm Restoration Costs | 137.0 |  |  |  |  |  |  | 557.0 |  |  |
Florida Power & Light Company | Forecast |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Recoverable storm restoration costs |  |  |  |  |  |  | $ 1,200.0 |  |  |  |
Regulatory Asset, Amortization Period |  |  |  |  |  |  | 12 months |  |  |  |
Florida Power & Light Company | Forecast | 2026 Rate Agreement |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Base Rate Proceeding, Rate Plan, Duration |  |  |  |  |  |  |  |  |  | 4 years |
General Base Revenue Requirement Increase (Decrease) |  |  |  |  |  |  |  |  | $ 927.0 | $ 1,545.0 |
Solar and Battery Base Rate Adjustment - Solar MW Additions Capacity | MW |  |  |  |  | 1,788 | 1,490 |  |  |  |  |
Solar and Battery Base Rate Adjustment - Battery MW Additions Capacity | kW |  |  |  |  | 596 | 596 |  |  |  |  |
Regulatory Return On Common Equity, Midpoint |  |  |  |  |  |  |  |  |  | 0.1190 |
NextEra Energy Resources |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
income associated with differential membership interests | 417.0 | 357.0 | 811.0 | 705.0 |  |  |  |  |  |  |
Investment in equity method investees |  | $ 1,700.0 |  | $ 1,700.0 |  |  |  |  |  |  |
NextEra Energy Resources | Differential Membership Interests |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interests associated with Differential Membership Interests | $ (8,759.0) |  | $ (8,759.0) |  |  |  |  | $ (9,062.0) |  |  |
Subsidiary of NextEra Energy Resources | Forecast | Rate-Regulated Transmission [Member] | Cash and Cash Equivalents | Disposed of by Sale [Member] |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Purchase price |  |  |  |  |  |  |  |  |  |  | $ 270.0
Subsidiary of NextEra Energy Resources | Rate-Regulated Transmission Asset Joint Venture | Subsequent Event | Rate-Regulated Transmission [Member] | Disposed of by Sale [Member] |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Equity method investment, percentage sold |  |  |  |  |  |  |  |  |  |  | 50.00%
Subsidiary of NextEra Energy Resources | Rate-Regulated Transmission Asset Joint Venture | Subsequent Event | Rate-Regulated Transmission [Member] | Disposed of by Sale [Member] | Rate-Regulated Transmission Asset Joint Venture |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  |  |  |  |  |  |  |  | 50.00%

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