Derivative Instruments - Narrative (Details) - USD ($)	Mar. 31, 2023	Dec. 31, 2022
Derivative [Line Items]
Margin cash collateral received from counterparties that was not offset against derivative assets	$ 37,000,000	$ 106,000,000
Margin cash collateral provided to counterparties that was not offset against derivative assets or liabilities	278,000,000	268,000,000
Florida Power & Light Company
Derivative [Line Items]
Margin cash collateral received from counterparties that was not offset against derivative assets	0	0
Margin cash collateral provided to counterparties that was not offset against derivative assets or liabilities	$ 0	$ 0