Equity Method Investments (Changes in Investment) (Details) - LACC, LLC - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Mar. 15, 2022	Nov. 12, 2019
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Balance at beginning of period	$ 1,075	$ 943
Cash contributions	21	87
Additional interest purchased		89	$ 89	$ 817
Depreciation and amortization	(49)	(44)
Balance at end of period	$ 1,047	$ 1,075