Summary of Significant Accounting and Reporting Policies - Additional Information (Details) $ in Millions	1 Months Ended	3 Months Ended
	Dec. 31, 2021 USD ($) facility MW	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)
Accounting Policies [Line Items]
Restricted Cash and Cash Equivalents	$ 677	$ 1,261
Restricted cash related to margin cash collateral that is netted against derivative instruments	121	402
restricted cash related to margin cash collateral that is netted against derivative liabilities	172	985
Customer deposits	485	485
Accrued construction-related expenditures	1,378	1,572
Bad debt expense, including credit losses		(37)	$ (152)
Noncurrent accounts receivable allowances	127	159
Florida Power & Light Company
Accounting Policies [Line Items]
Restricted Cash and Cash Equivalents	53	45
Customer deposits	478	478
Accrued construction-related expenditures	$ 601	451
Seven wind facilities, six solar facilities and storage capacity | Disposed of by Sale [Member] | Subsidiaries of NextEra Energy Resources | United States, Geographically Dispersed
Accounting Policies [Line Items]
Number of wind generation facilities | facility	7
Number of solar generation facilities | facility	6
Number of facilities under construction | facility	3
Generating capacity (MW) | MW	2,520
Solar Plus Storage Facility Capacity | MW	115
Seven wind facilities, six solar facilities and storage capacity | Disposed of by Sale [Member] | Subsidiaries of NextEra Energy Resources | NEP | United States, Geographically Dispersed
Accounting Policies [Line Items]
Ownership percentage sold	50.00%
Seven wind facilities, six solar facilities and storage capacity | Disposed of by Sale [Member] | Subsidiaries of NextEra Energy Resources | Third Party | United States, Geographically Dispersed
Accounting Policies [Line Items]
Ownership percentage sold	50.00%
Seven wind facilities, six solar facilities and storage capacity | Disposed of by Sale [Member] | Subsidiaries of NextEra Energy Resources | Subsidiaries of NextEra Energy Resources | United States, Geographically Dispersed
Accounting Policies [Line Items]
Ownership percentage sold	100.00%
Seven wind facilities, six solar facilities and storage capacity | Disposed of by Sale [Member] | NextEra Energy Resources | Differential Memberships | United States, Geographically Dispersed
Accounting Policies [Line Items]
Disposal of Business and Interest Affiliates, Contingent Payments	$ 117
Seven wind facilities, six solar facilities and storage capacity | Disposed of by Sale [Member] | Current other liabilities | Subsidiaries of NextEra Energy Resources | United States, Geographically Dispersed
Accounting Policies [Line Items]
Customer deposits	668
Contract with Customer, Liability, Revenue Recognized		551
Seven wind facilities, six solar facilities and storage capacity | Disposed of by Sale [Member] | Accounts Payable
Accounting Policies [Line Items]
Accrued construction-related expenditures	$ 970	$ 545