Summary of Significant Accounting and Reporting Policies - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Accounting Policies [Line Items]
Restricted cash and cash equivalents, current	$ 477.0		$ 194.0
Restricted cash related to margin cash collateral that is netted against derivative assets			(50.0)
restricted cash related to margin cash collateral that is netted against derivative liabilities	240.0		81.0
Supplier finance program, obligation	2,100.0		4,200.0
Operating lease income	103.0	$ 60.0
Gain in connection with sale	257.0	36.0
Interest expense	1,287.0	1,774.0
Investment in equity method investees	5,989.0		5,528.0
Florida Power & Light Company
Accounting Policies [Line Items]
Tax credits sold	639.0	105.0
Florida Power & Light Company
Accounting Policies [Line Items]
Restricted cash and cash equivalents, current	46.0		46.0
Interest expense	338.0	317.0
Florida Power & Light Company \| 2025 Rate Agreement
Accounting Policies [Line Items]
RSM reserve, authorized amount	306.0
Decrease in income taxes	(150.0)
Decrease in depreciation and amortization	(209.0)
Decrease in income taxes, net	(156.0)
Florida Power & Light Company \| 2025 Rate Agreement \| Maximum
Accounting Policies [Line Items]
RSM reserve, authorized amount	1,500.0
Florida Power & Light Company \| 2021 Rate Agreement
Accounting Policies [Line Items]
Decrease in depreciation and amortization		(622.0)
NextEra Energy Resources
Accounting Policies [Line Items]
income associated with differential membership interests	511.0	394.0
Investment in equity method investees		$ 1,700.0
NextEra Energy Resources \| Rate-Regulated Transmission [Member] \| Disposed of by Sale [Member]
Accounting Policies [Line Items]
Net gain in connection with sale	133.0
Gain (after tax) in connection with sale	107.0
Gain in connection with sale	253.0
Interest expense	120.0
Plant, Property, and Equipment, Decrease from Deconsolidation	831.0
Long-term Debt, Decrease from Deconsolidation	512.0
Investment in equity method investees	287.0
NextEra Energy Resources \| Rate-Regulated Transmission [Member] \| Cash and Cash Equivalents \| Disposed of by Sale [Member]
Accounting Policies [Line Items]
Purchase price	287.0
NextEra Energy Resources \| Differential Membership Interests
Accounting Policies [Line Items]
Noncontrolling Interests associated with Differential Membership Interests	$ (10,196.0)		$ (10,654.0)
Subsidiary of NEET \| Rate-Regulated Transmission Asset Joint Venture \| Rate-Regulated Transmission [Member] \| Disposed of by Sale [Member]
Accounting Policies [Line Items]
Equity method investment, percentage sold	50.00%
Subsidiary of NEET \| Rate-Regulated Transmission Asset Joint Venture \| 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%

NEXTERA ENERGY INC 10-Q