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2013falsefalsefalseinvest:dateStringItemTypenormalizedstringFiling Date of FERC filingNo definition available.false0Filing Date of FERC filing45false 4nve_ExpectedAuthorizationDateFercnve_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00December 1, 2013falsefalsefalseinvest:dateStringItemTypenormalizedstringThe expected merger approval date from the FERCNo definition available.false0Expected Authorization Date FERC46false 4nve_ExpectedHearingDatenve_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002014-02-01falsefalsetruexbrli:dateItemTypedateExpected date that hearings will beginNo definition available.false0Expected Hearing Date47false 4nve_DaysToRespondnve_falsenainstantfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00180 daysfalsefalsefalseus-types:durationStringItemTypenormalizedstringNumber of days to respond to applicationNo definition available.false0Days To Respond48false 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