Consolidated Statements of Cash Flows - SPC (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net cash paid for capitalized interest	$ 132	$ 103	$ 92
Southern Power
Net cash paid for capitalized interest	$ 3	$ 0	$ 6