{"cik":1936737,"taxonomy":"us-gaap","tag":"CommonStockParOrStatedValuePerShare","label":"Common Stock, Par or Stated Value Per Share","description":"Face amount or stated value per share of common stock.","entityName":"EASTERN GAS TRANSMISSION AND STORAGE, INC.","units":{"USD/shares":[{"end":"2021-12-31","val":10000,"accn":"0001936737-22-000006","fy":2022,"fp":"Q2","form":"10-Q","filed":"2022-09-06","frame":"CY2021Q4I"},{"end":"2022-06-30","val":10000,"accn":"0001936737-22-000006","fy":2022,"fp":"Q2","form":"10-Q","filed":"2022-09-06","frame":"CY2022Q2I"}]}}