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Debt Obligations (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2017
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 25,618,500 |  | $ 24,780,100
Other, non-principal amounts |  | (225,300) |  | (211,400)
Less current maturities of debt |  | (2,376,800) |  | (2,855,000)
Total long-term debt |  | 23,016,400 |  | 21,713,700
Debt Obligations Terms: |  |  |  |
Repayment of debt obligations |  | 15,444,700 | $ 17,856,500 |
Letters of credit outstanding |  | 66,400 |  |
Senior Debt Obligations [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | 22,426,800 |  | 21,605,700
Debt Obligations Terms: |  |  |  |
Aggregate debt principal issued |  | 2,000,000 |  |
Senior Debt Obligations [Member] | Commercial Paper Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 576,800 |  | 1,755,700
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | variable |  |
Information regarding variable interest rates paid: |  |  |  |
Weighted-average interest rate paid |  | 1.79% |  |
Senior Debt Obligations [Member] | Commercial Paper Notes [Member] | Minimum [Member] |  |  |  |
Information regarding variable interest rates paid: |  |  |  |
Variable interest rates paid |  | 1.50% |  |
Senior Debt Obligations [Member] | Commercial Paper Notes [Member] | Maximum [Member] |  |  |  |
Information regarding variable interest rates paid: |  |  |  |
Variable interest rates paid |  | 2.50% |  |
Senior Debt Obligations [Member] | EPO Senior Notes V [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 349,700 |  | 349,700
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 6.65% |  |
Maturity date |  | Apr. 15, 2018 |  |
Senior Debt Obligations [Member] | EPO Senior Notes OO [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 750,000 |  | 750,000
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 1.65% |  |
Maturity date |  | May 07, 2018 |  |
Senior Debt Obligations [Member] | EPO 364-Day Revolving Credit Agreement [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 0 |  | 0
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | variable |  |
Maturity date |  | Sep. 12, 2018 |  |
Senior Debt Obligations [Member] | EPO Senior Notes N [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 700,000 |  | 700,000
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 6.50% |  |
Maturity date |  | Jan. 31, 2019 |  |
Senior Debt Obligations [Member] | EPO Senior Notes LL [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 800,000 |  | 800,000
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 2.55% |  |
Maturity date |  | Oct. 15, 2019 |  |
Senior Debt Obligations [Member] | EPO Senior Notes Q [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 500,000 |  | 500,000
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 5.25% |  |
Maturity date |  | Jan. 31, 2020 |  |
Senior Debt Obligations [Member] | EPO Senior Notes Y [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 1,000,000 |  | 1,000,000
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 5.20% |  |
Maturity date |  | Sep. 01, 2020 |  |
Senior Debt Obligations [Member] | EPO Senior Notes TT [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 750,000 |  | 0
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 2.80% |  |
Maturity date |  | Feb. 15, 2021 |  |
Aggregate debt principal issued |  | $ 750,000 |  |
Debt issued as percent of principal amount |  | 99.946% |  |
Senior Debt Obligations [Member] | EPO Senior Notes RR [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 575,000 |  | 575,000
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 2.85% |  |
Maturity date |  | Apr. 15, 2021 |  |
Senior Debt Obligations [Member] | EPO Senior Notes CC [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 650,000 |  | 650,000
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 4.05% |  |
Maturity date |  | Feb. 15, 2022 |  |
Senior Debt Obligations [Member] | EPO Multi-Year Revolving Credit Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 0 |  | 0
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | variable |  |
Maturity date |  | Sep. 13, 2022 |  |
Information regarding variable interest rates paid: |  |  |  |
Weighted-average interest rate paid |  | 2.58% |  |
Senior Debt Obligations [Member] | EPO Multi-Year Revolving Credit Facility [Member] | Minimum [Member] |  |  |  |
Information regarding variable interest rates paid: |  |  |  |
Variable interest rates paid |  | 2.58% |  |
Senior Debt Obligations [Member] | EPO Multi-Year Revolving Credit Facility [Member] | Maximum [Member] |  |  |  |
Information regarding variable interest rates paid: |  |  |  |
Variable interest rates paid |  | 2.59% |  |
Senior Debt Obligations [Member] | EPO Senior Notes HH [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 1,250,000 |  | 1,250,000
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 3.35% |  |
Maturity date |  | Mar. 15, 2023 |  |
Senior Debt Obligations [Member] | EPO Senior Notes JJ [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 850,000 |  | 850,000
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 3.90% |  |
Maturity date |  | Feb. 15, 2024 |  |
Senior Debt Obligations [Member] | EPO Senior Notes MM [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 1,150,000 |  | 1,150,000
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 3.75% |  |
Maturity date |  | Feb. 15, 2025 |  |
Senior Debt Obligations [Member] | EPO Senior Notes PP [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 875,000 |  | 875,000
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 3.70% |  |
Maturity date |  | Feb. 15, 2026 |  |
Senior Debt Obligations [Member] | EPO Senior Notes SS [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 575,000 |  | 575,000
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 3.95% |  |
Maturity date |  | Feb. 15, 2027 |  |
Senior Debt Obligations [Member] | EPO Senior Notes D [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 500,000 |  | 500,000
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 6.875% |  |
Maturity date |  | Mar. 01, 2033 |  |
Senior Debt Obligations [Member] | EPO Senior Notes H [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 350,000 |  | 350,000
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 6.65% |  |
Maturity date |  | Oct. 15, 2034 |  |
Senior Debt Obligations [Member] | EPO Senior Notes J [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 250,000 |  | 250,000
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 5.75% |  |
Maturity date |  | Mar. 01, 2035 |  |
Senior Debt Obligations [Member] | EPO Senior Notes W [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 399,600 |  | 399,600
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 7.55% |  |
Maturity date |  | Apr. 15, 2038 |  |
Senior Debt Obligations [Member] | EPO Senior Notes R [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 600,000 |  | 600,000
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 6.125% |  |
Maturity date |  | Oct. 15, 2039 |  |
Senior Debt Obligations [Member] | EPO Senior Notes Z [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 600,000 |  | 600,000
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 6.45% |  |
Maturity date |  | Sep. 01, 2040 |  |
Senior Debt Obligations [Member] | EPO Senior Notes BB [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 750,000 |  | 750,000
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 5.95% |  |
Maturity date |  | Feb. 01, 2041 |  |
Senior Debt Obligations [Member] | EPO Senior Notes DD [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 600,000 |  | 600,000
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 5.70% |  |
Maturity date |  | Feb. 15, 2042 |  |
Senior Debt Obligations [Member] | EPO Senior Notes EE [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 750,000 |  | 750,000
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 4.85% |  |
Maturity date |  | Aug. 15, 2042 |  |
Senior Debt Obligations [Member] | EPO Senior Notes GG [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 1,100,000 |  | 1,100,000
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 4.45% |  |
Maturity date |  | Feb. 15, 2043 |  |
Senior Debt Obligations [Member] | EPO Senior Notes II [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 1,400,000 |  | 1,400,000
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 4.85% |  |
Maturity date |  | Mar. 15, 2044 |  |
Senior Debt Obligations [Member] | EPO Senior Notes KK [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 1,150,000 |  | 1,150,000
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 5.10% |  |
Maturity date |  | Feb. 15, 2045 |  |
Senior Debt Obligations [Member] | EPO Senior Notes QQ [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 975,000 |  | 975,000
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 4.90% |  |
Maturity date |  | May 15, 2046 |  |
Senior Debt Obligations [Member] | EPO Senior Notes UU [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 1,250,000 |  | 0
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 4.25% |  |
Maturity date |  | Feb. 15, 2048 |  |
Aggregate debt principal issued |  | $ 1,250,000 |  |
Debt issued as percent of principal amount |  | 99.865% |  |
Senior Debt Obligations [Member] | EPO Senior Notes NN [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 400,000 |  | 400,000
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 4.95% |  |
Maturity date |  | Oct. 15, 2054 |  |
Senior Debt Obligations [Member] | TEPPCO Senior Notes 4 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 300 |  | 300
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 6.65% |  |
Maturity date |  | Apr. 15, 2018 |  |
Senior Debt Obligations [Member] | TEPPCO Senior Notes 5 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 400 |  | 400
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed |  |
Interest rate, stated percentage |  | 7.55% |  |
Maturity date |  | Apr. 15, 2038 |  |
Junior Debt Obligations [Member] |  |  |  |
Debt Obligations Terms: |  |  |  |
Aggregate debt principal issued |  | $ 700,000 |  |
Junior Debt Obligations [Member] | EPO Junior Subordinated Notes A [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding | [1] | $ 521,100 |  | 521,100
Debt Obligations Terms: |  |  |  |
Interest rate terms | [1] | variable |  |
Maturity date |  | Aug. 31, 2066 |  |
Variable annual interest rate thereafter, variable rate basis |  | 3-month LIBOR |  |
Variable interest rate |  | 3.708% |  |
Information regarding variable interest rates paid: |  |  |  |
Weighted-average interest rate paid |  | 5.34% |  |
Junior Debt Obligations [Member] | EPO Junior Subordinated Notes A [Member] | Minimum [Member] |  |  |  |
Information regarding variable interest rates paid: |  |  |  |
Variable interest rates paid |  | 5.08% |  |
Junior Debt Obligations [Member] | EPO Junior Subordinated Notes A [Member] | Maximum [Member] |  |  |  |
Information regarding variable interest rates paid: |  |  |  |
Variable interest rates paid |  | 5.48% |  |
Junior Debt Obligations [Member] | EPO Junior Subordinated Notes C [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding | [2] | $ 256,400 |  | 256,400
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | variable |  |
Maturity date |  | Jun. 01, 2067 |  |
Variable annual interest rate thereafter, variable rate basis |  | 3-month LIBOR |  |
Variable interest rate |  | 2.778% |  |
Information regarding variable interest rates paid: |  |  |  |
Weighted-average interest rate paid |  | 4.44% |  |
Junior Debt Obligations [Member] | EPO Junior Subordinated Notes C [Member] | Minimum [Member] |  |  |  |
Information regarding variable interest rates paid: |  |  |  |
Variable interest rates paid |  | 4.26% |  |
Junior Debt Obligations [Member] | EPO Junior Subordinated Notes C [Member] | Maximum [Member] |  |  |  |
Information regarding variable interest rates paid: |  |  |  |
Variable interest rates paid |  | 4.78% |  |
Junior Debt Obligations [Member] | EPO Junior Subordinated Notes B [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding | [3] | $ 0 |  | 682,700
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed/variable |  |
Maturity date |  | Jan. 15, 2068 |  |
Repayment of debt obligations |  | $ 682,700 |  |
Junior Debt Obligations [Member] | EPO Junior Subordinated Notes D [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding | [4] | $ 700,000 |  | 700,000
Debt Obligations Terms: |  |  |  |
Interest rate terms | [4] | fixed/variable |  |
Interest rate, stated percentage |  | 4.875% |  |
Maturity date |  | Aug. 16, 2077 |  |
Variable annual interest rate thereafter, variable rate basis |  | 3-month LIBOR |  |
Variable interest rate |  | 2.986% |  |
Junior Debt Obligations [Member] | EPO Junior Subordinated Notes E [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding | [5] | $ 1,000,000 |  | 1,000,000
Debt Obligations Terms: |  |  |  |
Interest rate terms | [5] | fixed/variable |  |
Interest rate, stated percentage |  | 5.25% |  |
Maturity date |  | Aug. 16, 2077 |  |
Variable annual interest rate thereafter, variable rate basis |  | 3-month LIBOR |  |
Variable interest rate |  | 3.033% |  |
Junior Debt Obligations [Member] | EPO Junior Subordinated Notes F [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding | [6] | $ 700,000 |  | 0
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed/variable |  |
Interest rate, stated percentage |  | 5.375% |  |
Maturity date |  | Feb. 15, 2078 |  |
Aggregate debt principal issued |  | $ 700,000 |  |
Debt issued as percent of principal amount |  | 100.00% |  |
Variable annual interest rate thereafter, variable rate basis |  | 3-month LIBOR |  |
Variable interest rate |  | 2.57% |  |
Junior Debt Obligations [Member] | TEPPCO Junior Subordinated Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal outstanding |  | $ 14,200 |  | $ 14,200
Debt Obligations Terms: |  |  |  |
Interest rate terms |  | fixed/variable |  |
Maturity date |  | Jun. 01, 2067 |  |
[1] | Variable rate is reset quarterly and based on 3-month LIBOR plus 3.708%.
[2] | Variable rate is reset quarterly and based on 3-month LIBOR plus 2.778%.
[3] | Notes were redeemed in March 2018.
[4] | Fixed rate of 4.875% through August 15, 2022; thereafter, a variable rate reset quarterly and based on 3-month LIBOR plus 2.986%.
[5] | Fixed rate of 5.250% through August 15, 2027; thereafter, a variable rate reset quarterly and based on 3-month LIBOR plus 3.033%.
[6] | Fixed rate of 5.375% through February 14, 2028; thereafter, a variable rate reset quarterly and based on 3-month LIBOR plus 2.57%.

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- Definition The amount outstanding on a letter of credit related to operations at our facilities and motor fuel tax obligations . These letters of credit reduce the amount available for borrowing under EPO's Multi-Year Revolving Credit Facility. + References No definition available. + Details
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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