| The consolidated unit of measure used for production costs. Units of production are expressed in common units of production with oil or gas converted to a common unit of measure on the basis used in computing amortization (relative energy content or gross revenue method). This may be barrel of oil equivalents (BOE) or Mcfe (million cubic feet equivalents) if different types of gas products (for example, gas, condensate, and NGLs) are consolidated. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |