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Summary of Significant Accounting and Reporting Policies - Property, Plant and Equiptment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Electric plant in service and other property	$ 147,386		$ 147,386		$ 139,049
Nuclear fuel	1,750		1,750		1,564
Construction work in progress	20,595		20,595		18,652
Property, plant and equipment, gross	169,731		169,731		159,265
Accumulated depreciation and amortization	(35,422)		(35,422)		(33,489)
Property, plant and equipment – net	134,309		134,309		125,776
Allowance for Funds Used During Construction, Equity	50	$ 43	147	$ 105
Florida Power & Light Company
Property, Plant and Equipment [Line Items]
Electric plant in service and other property	85,206		85,206		79,801
Nuclear fuel	1,163		1,163		1,125
Construction work in progress	7,878		7,878		8,311
Property, plant and equipment, gross	94,247		94,247		89,237
Accumulated depreciation and amortization	(19,512)		(19,512)		(18,629)
Electric utility plant and other property – net	74,735		74,735		$ 70,608
Allowance for Funds Used During Construction	69	49	180	123
Allowance for Funds Used During Construction, Equity	49	40	139	100
NextEra Energy Resources
Property, Plant and Equipment [Line Items]
Project Development Costs	$ 134	$ 88	$ 344	$ 220

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The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, including nuclear fuel, but not including land) that has been recognized in the income statement.

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Carrying amount at the balance sheet date for long-lived physical assets used in the normal conduct of business and not intended for resale. This can include land, physical structures, machinery, vehicles, furniture, computer equipment, and similar items. Amount does not include construction in progress or depreciation.

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For NextEra Energy Resources, the amount of project development costs capitalized as of the balance sheet date. These costs include land rights and other third-party costs directly associated with the development of a new project. Upon commencement of construction, these costs either are transferred to construction work in progress or remain in other assets, depending upon the nature of the cost. Capitalized development costs are charged to OM expenses when recoverability is no longer probable.

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Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Total increase in earnings in the period representing the cost of equity (based on assumed rate of return) and/or borrowed funds (based on interest rate) used to finance construction of regulated assets, which is expected to be recovered through rate adjustments.

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