2.4.0.82409405 - Disclosure - Long-Term Debt Long-Term Debt (Redemption Percentages) (Details)truefalsefalse1false truefalseD2010Q4Note2015_us-gaap_DebtInstrumentAxis_rgp_SeniorNotesDueTwoThousandEighteenMemberhttp://www.sec.gov/CIK0001338613duration2015-12-01T00:00:002016-11-30T00:00:00falsefalseSenior Notes Due 2018us-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldirgp_SeniorNotesDueTwoThousandEighteenMemberus-gaap_DebtInstrumentAxisexplicitMembernumberStandardhttp://www.xbrl.org/2003/instancepurexbrli02false truefalseD2010Q4Note2014_us-gaap_DebtInstrumentAxis_rgp_SeniorNotesDueTwoThousandEighteenMemberhttp://www.sec.gov/CIK0001338613duration2014-12-01T00:00:002015-11-30T00:00:00falsefalseSenior Notes Due 2018us-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldirgp_SeniorNotesDueTwoThousandEighteenMemberus-gaap_DebtInstrumentAxisexplicitMembernumberStandardhttp://www.xbrl.org/2003/instancepurexbrli03false truefalseI2011Q4Note2016_us-gaap_DebtInstrumentAxis_rgp_SeniorNotesDueTwoThousandEighteenMemberhttp://www.sec.gov/CIK0001338613instant2016-12-01T00:00:000001-01-01T00:00:00falsefalseSenior Notes Due 2018us-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldirgp_SeniorNotesDueTwoThousandEighteenMemberus-gaap_DebtInstrumentAxisexplicitMembernumberStandardhttp://www.xbrl.org/2003/instancepurexbrli04false truefalseD2011Q2Note2018_us-gaap_DebtInstrumentAxis_rgp_SeniorNotesDueTwoThousandAndTwentyOneMemberhttp://www.sec.gov/CIK0001338613duration2018-07-15T00:00:002019-07-14T00:00:00falsefalseSenior Notes Due 2021us-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldirgp_SeniorNotesDueTwoThousandAndTwentyOneMemberus-gaap_DebtInstrumentAxisexplicitMembernumberStandardhttp://www.xbrl.org/2003/instancepurexbrli05false truefalseD2011Q2Note2017_us-gaap_DebtInstrumentAxis_rgp_SeniorNotesDueTwoThousandAndTwentyOneMemberhttp://www.sec.gov/CIK0001338613duration2017-07-15T00:00:002018-07-14T00:00:00falsefalseSenior Notes Due 2021us-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldirgp_SeniorNotesDueTwoThousandAndTwentyOneMemberus-gaap_DebtInstrumentAxisexplicitMembernumberStandardhttp://www.xbrl.org/2003/instancepurexbrli06false truefalseD2011Q2Note2016_us-gaap_DebtInstrumentAxis_rgp_SeniorNotesDueTwoThousandAndTwentyOneMemberhttp://www.sec.gov/CIK0001338613duration2016-07-15T00:00:002017-07-14T00:00:00falsefalseSenior Notes Due 2021us-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldirgp_SeniorNotesDueTwoThousandAndTwentyOneMemberus-gaap_DebtInstrumentAxisexplicitMembernumberStandardhttp://www.xbrl.org/2003/instancepurexbrli07false truefalseI2011Q2Note2019_us-gaap_DebtInstrumentAxis_rgp_SeniorNotesDueTwoThousandAndTwentyOneMemberhttp://www.sec.gov/CIK0001338613instant2019-07-16T00:00:000001-01-01T00:00:00falsefalseSenior Notes Due 2021us-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldirgp_SeniorNotesDueTwoThousandAndTwentyOneMemberus-gaap_DebtInstrumentAxisexplicitMembernumberStandardhttp://www.xbrl.org/2003/instancepurexbrli08false truefalseD2012Q4Note2019_us-gaap_DebtInstrumentAxis_rgp_SeniorNotesDueTwoThousandAndTwentyThreeMemberhttp://www.sec.gov/CIK0001338613duration2019-10-15T00:00:002020-10-14T00:00:00falsefalseSenior Notes Due 2023us-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldirgp_SeniorNotesDueTwoThousandAndTwentyThreeMemberus-gaap_DebtInstrumentAxisexplicitMembernumberStandardhttp://www.xbrl.org/2003/instancepurexbrli09false truefalseD2012Q4Note2018_us-gaap_DebtInstrumentAxis_rgp_SeniorNotesDueTwoThousandAndTwentyThreeMemberhttp://www.sec.gov/CIK0001338613duration2018-10-15T00:00:002019-10-14T00:00:00falsefalseSenior Notes Due 2023us-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldirgp_SeniorNotesDueTwoThousandAndTwentyThreeMemberus-gaap_DebtInstrumentAxisexplicitMembernumberStandardhttp://www.xbrl.org/2003/instancepurexbrli010false truefalseD2012Q4Note2017_us-gaap_DebtInstrumentAxis_rgp_SeniorNotesDueTwoThousandAndTwentyThreeMemberhttp://www.sec.gov/CIK0001338613duration2017-10-15T00:00:002018-10-14T00:00:00falsefalseSenior Notes Due 2023us-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldirgp_SeniorNotesDueTwoThousandAndTwentyThreeMemberus-gaap_DebtInstrumentAxisexplicitMembernumberStandardhttp://www.xbrl.org/2003/instancepurexbrli011false truefalseI2012Q3Note2020_us-gaap_DebtInstrumentAxis_rgp_SeniorNotesDueTwoThousandAndTwentyThreeMemberhttp://www.sec.gov/CIK0001338613instant2019-10-16T00:00:000001-01-01T00:00:00falsefalseSenior Notes Due 2023us-gaap_DebtInstrumentAxisxbrldihttp://xbrl.org/2006/xbrldirgp_SeniorNotesDueTwoThousandAndTwentyThreeMemberus-gaap_DebtInstrumentAxisexplicitMembernumberStandardhttp://www.xbrl.org/2003/instancepurexbrli01true 3us-gaap_ExtinguishmentOfDebtLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Extinguishment of Debt2false 4rgp_SeniorNoteRedemptionPricergp_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truetruefalse1.017191.01719falsefalsefalse2truetruefalse1.034381.03438falsefalsefalse3falsetruefalse00falsefalsefalse4truetruefalse1.010831.01083falsefalsefalse5truetruefalse1.021671.02167falsefalsefalse6truetruefalse1.032501.03250falsefalsefalse7falsetruefalse00falsefalsefalse8truetruefalse1.009171.00917falsefalsefalse9truetruefalse1.018331.01833falsefalsefalse10truetruefalse1.027501.02750falsefalsefalse11falsetruefalse00falsefalsefalsenum:percentItemTypepureThe future redemption price for certain debt obligations which would be exercisable by the holder upon a change of control of the reporting entity.No definition available.false0Senior Note Redemption Price3false 4rgp_LongTermDebtMaturitiesRepaymentsOfPrincipalrgp_falsenainstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsetruefalse00falsefalsefalse2falsetruefalse00falsefalsefalse3truetruefalse1.000001.00000falsefalsefalse4falsetruefalse00falsefalsefalse5falsetruefalse00falsefalsefalse6falsetruefalse00falsefalsefalse7truetruefalse1.000001.00000falsefalsefalse8falsetruefalse00falsefalsefalse9falsetruefalse00falsefalsefalse10falsetruefalse00falsefalsefalse11truetruefalse1.000001.00000falsefalsefalsenum:percentItemTypepureLong-Term Debt Maturities Repayments Of PrincipalNo definition available.false0Senior Note Redemption PricefalseLong-Term Debt Long-Term Debt (Redemption Percentages) (Details)UnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.regencyenergy.com/role/LongTermDebtLongTermDebtRedemptionPercentagesDetails113