Summary of Significant Accounting and Reporting Policies - Operating Revenues (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Summary of Significant Accounting Policies [Line Items]
Revenue from contracts with customers	$ 23,500	$ 24,800	$ 23,000
FPL [Member]
Summary of Significant Accounting Policies [Line Items]
Revenue from contracts with customers	16,900	18,200	17,200
Franchise and Gross Receipts Taxes [Member]
Summary of Significant Accounting Policies [Line Items]
Revenue from contracts with customers	1,053	1,139	1,035
Franchise and Gross Receipts Taxes [Member] | FPL [Member]
Summary of Significant Accounting Policies [Line Items]
Revenue from contracts with customers	$ 1,053	$ 1,139	$ 1,035