v3.25.2
Acquisition and Divestiture (CenterPoint Energy and CERC) - Schedule of Asset and Liabilities Held for Sale (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Total current assets held for sale $ 0 $ 1,361
Total current liabilities held for sale 0 176
CERC    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Total current assets held for sale 0 1,266
Total current liabilities held for sale $ 0 176
Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations | Louisiana and Mississippi Regulated Natural Gas LDC Businesses    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Receivables, net   27
Total current assets held for sale   1,361
Total current liabilities held for sale   176
Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations | Louisiana and Mississippi Regulated Natural Gas LDC Businesses | CERC    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Receivables, net   27
Total current assets held for sale   1,266
Total current liabilities held for sale   176
Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations | Louisiana And Mississippi Natural Gas LDC Businesses    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Accrued unbilled revenues   26
Natural gas inventory   13
Materials and supplies   5
Property, plant and equipment, net   1,052
Goodwill   217
Regulatory assets   15
Other   6
Short-term borrowings   3
Accounts payable   44
Customer deposits   14
Regulatory liabilities   31
Other   84
Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations | Louisiana And Mississippi Natural Gas LDC Businesses | CERC    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Accrued unbilled revenues   26
Natural gas inventory   13
Materials and supplies   5
Property, plant and equipment, net   1,052
Goodwill   122
Regulatory assets   15
Other   6
Short-term borrowings   3
Accounts payable   44
Customer deposits   14
Regulatory liabilities   31
Other   $ 84