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+ Details

Acquisition and Divestiture (CenterPoint Energy and CERC) - Schedule of Pre Tax Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income Before Income Taxes	$ 253	$ 261	$ 631	$ 689
CERC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income Before Income Taxes	97	62	502	386
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]
Income Before Income Taxes	0	3
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]
Income Before Income Taxes	$ 0	$ 3	$ 48	$ 44