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Condensed Statements of Consolidated Income (Unaudited) - CERC - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Revenues:    
Utility revenues $ 2,607 $ 2,717
Non-utility revenues 13 62
Total 2,620 2,779
Expenses:    
Utility natural gas 787 1,078
Non-utility cost of revenues, including natural gas 1 40
Operation and maintenance 709 663
Depreciation and amortization 363 319
Taxes other than income taxes 144 138
Total 2,004 2,238
Operating Income 616 541
Other Income (Expense):    
Interest expense and other finance charges (198) (148)
Other income, net 14 13
Total (188) (138)
Income Before Income Taxes 428 403
Income tax expense 78 78
Net Income 350 325
CERC    
Revenues:    
Utility revenues 1,500 1,707
Non-utility revenues 12 10
Total 1,512 1,717
Expenses:    
Utility natural gas 724 998
Non-utility cost of revenues, including natural gas 1 1
Operation and maintenance 226 218
Depreciation and amortization 127 118
Taxes other than income taxes 64 69
Total 1,142 1,404
Operating Income 370 313
Other Income (Expense):    
Interest expense and other finance charges (49) (42)
Other income, net 3 1
Total (46) (41)
Income Before Income Taxes 324 272
Income tax expense 60 60
Net Income $ 264 $ 212