REGULATORY ASSETS, LIABILITIES, AND BALANCING ACCOUNTS (Long-Term Regulatory Liabilities) (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2022
Regulatory Liabilities [Line Items]
Total noncurrent regulatory liabilities	$ 19,900	$ 19,444
Cost of removal obligations
Regulatory Liabilities [Line Items]
Total noncurrent regulatory liabilities	8,527	8,191
Public purpose programs
Regulatory Liabilities [Line Items]
Total noncurrent regulatory liabilities	1,332	1,238
Employee benefit plans
Regulatory Liabilities [Line Items]
Total noncurrent regulatory liabilities	1,043	1,032
Transmission tower wireless licenses
Regulatory Liabilities [Line Items]
Total noncurrent regulatory liabilities	330	384
SFGO sale
Regulatory Liabilities [Line Items]
Total noncurrent regulatory liabilities	119	185
SB 901 securitization
Regulatory Liabilities [Line Items]
Total noncurrent regulatory liabilities	6,457	6,628	$ 5,540
Wildfire self-insurance
Regulatory Liabilities [Line Items]
Total noncurrent regulatory liabilities	600	407
Other
Regulatory Liabilities [Line Items]
Total noncurrent regulatory liabilities	$ 1,492	$ 1,379