CONDENSED CONSOLIDATED BALANCE SHEETS, UTILITY (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Restricted cash and cash equivalents	$ 368	$ 273
Allowance for doubtful accounts	408	418
Accounts receivable, after allowance for credit loss, current	2,343	2,220
Accrued unbilled revenue	1,633	1,487
Other (net of allowance for doubtful accounts)	82	35
Long-term debt, classified as current	2,769	2,146
Interest payable	657	760
Long-term debt	$ 55,531	$ 53,569
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	3,600,000,000	3,600,000,000
Common stock, shares outstanding (in shares)	2,197,837,402	2,193,573,536
Utility
Restricted cash and cash equivalents	$ 367	$ 272
Allowance for doubtful accounts	408	418
Accounts receivable, after allowance for credit loss, current	2,343	2,220
Accrued unbilled revenue	1,633	1,487
Other (net of allowance for doubtful accounts)	82	35
Long-term debt, classified as current	2,769	2,146
Interest payable	596	667
Long-term debt	$ 49,912	$ 47,958
Common stock, par value (in dollars per share)	$ 5	$ 5
Common stock, shares authorized (in shares)	800,000,000	800,000,000
Common stock, shares outstanding (in shares)	800,000,000	800,000,000
Variable Interest Entity, Primary Beneficiary
Restricted cash and cash equivalents	$ 334	$ 263
Allowance for doubtful accounts	407	418
Accounts receivable, after allowance for credit loss, current	2,000	1,900
Accrued unbilled revenue	1,400	1,300
Allowance for doubtful accounts, noncurrent	15	18
Noncurrent accounts receivable	71	82
Long-term debt, classified as current	218	222
Interest payable	156	91
Long-term debt	11,800	10,100
Variable Interest Entity, Primary Beneficiary | Utility
Restricted cash and cash equivalents	334	263
Allowance for doubtful accounts	407	418
Accounts receivable, after allowance for credit loss, current	2,000	1,900
Accrued unbilled revenue	1,400	1,300
Allowance for doubtful accounts, noncurrent	71	82
Noncurrent accounts receivable	15	18
Long-term debt, classified as current	218	222
Interest payable	156	91
Long-term debt	$ 11,800	$ 10,100