Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Allowance for doubtful accounts - receivables	$ 49	$ 40
Regulatory assets	3,489	3,485
Current Assets: Other	602	973
Regulatory assets	13,745	14,645
Other	3,698	3,400
Current maturities of long-term debt	4,034	3,878
Long-Term Debt	$ 71,353	$ 65,873
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)	771,000,000	770,000,000
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	$ 154	$ 176
Regulatory assets	109	106
Current Assets: Other	56	116
Regulatory assets	1,668	1,715
Other	43	52
Current maturities of long-term debt	428	350
Long-Term Debt	$ 3,025	$ 3,108