Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Allowance for doubtful accounts - receivables	$ 102	$ 55
Inventory	4,281	4,292
Regulatory assets	3,082	3,648
Current Assets: Other	359	431
Regulatory assets	13,636	13,618
Accounts payable	3,364	4,228
Current maturities of long-term debt	2,274	2,800
Long-Term Debt	74,979	72,452
Other	$ 1,352	$ 1,393
Common stock, par value (in usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	2,000,000,000	2,000,000,000
Common stock, shares outstanding (in shares)	772,000,000	771,000,000
Preferred stock, Series A
Preferred stock, par value (in usd per share)	$ 0.001	$ 0.001
Preferred stock, depositary shares authorized (in shares)	40,000,000	40,000,000
Preferred stock, depositary shares outstanding (in shares)	40,000,000	40,000,000
Preferred stock, Series B
Preferred stock, par value (in usd per share)	$ 0.001	$ 0.001
Preferred stock, depositary shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, depositary shares outstanding (in shares)	1,000,000	1,000,000
Variable Interest Entity
Allowance for doubtful accounts - receivables of VIEs	$ 102	$ 150
Inventory	470	462
Regulatory assets	110	110
Current Assets: Other	44	90
Regulatory assets	1,616	1,642
Accounts payable	188	188
Current maturities of long-term debt	929	428
Long-Term Debt	2,134	3,000
Other	$ 42	$ 35