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Percentage of voting equity interest acquired in business combination.

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Business Combinations (Details) $ in Millions			6 Months Ended
Business Combinations (Details) $ in Millions	Jun. 30, 2026 USD ($) wells	Jan. 09, 2026 USD ($) customer state	Dec. 31, 2027 USD ($) merger shares	Dec. 31, 2025 USD ($)
Business Combination [Line Items]
Goodwill	$ 5,152			$ 4,849
NextEra Energy Resources, Owned Subsidiary
Business Combination [Line Items]
Subsidiary, ownership percentage	95.00%
Forecast
Business Combination [Line Items]
Number of mergers \| merger			2
NextEra Energy Resources \| Symmetry Energy Solutions
Business Combination [Line Items]
Membership interests acquired		100.00%
Number Of Customers Served \| customer		5,500
Number of states in which entity has customers \| state		34
Consideration transferred		$ 800
Assets assumed		1,300
Working capital and other adjustments		300
Assumed liabilities		600
Goodwill		400
Goodwill, expected tax deductible amount		$ 100
NextEra Energy Resources \| CRP XII Intermediate, LLC
Business Combination [Line Items]
Membership interests acquired	100.00%
Consideration transferred	$ 1,300
Assets assumed	$ 1,400
Number of Producing Wells \| wells	7,500
Assumed liabilities	$ 400
Cash purchase price	1,000
Debt assumed	$ 300
NextEra Energy Resources \| Subsidiaries of NEE \| Forecast
Business Combination [Line Items]
Cash purchase price			$ 360
Shares acquired (in shares) \| shares			0.8138
Bill credits			$ 2,250
Period of bill credits, post close			2 years
NextEra Energy Resources \| Subsidiaries of NEE \| Forecast \| Minimum
Business Combination [Line Items]
Termination fees			$ 4,800
NextEra Energy Resources \| Subsidiaries of NEE \| Forecast \| Maximum
Business Combination [Line Items]
Termination fees			6,500
Dominion Energy \| Subsidiaries of NEE \| Forecast
Business Combination [Line Items]
Termination fees			$ 2,200