| Schedule of Debt [Table Text Block] |
The following table provides detail on the principal amount of our outstanding debt balances as of March 31, 2014 and December 31, 2013. The table amounts exclude all debt fair value adjustments, including debt discounts and premiums (in millions). | | | | | | | | | | | | March 31, 2014 | | December 31, 2013 | KMI | | | | | Senior term loan facility, variable rate, due May 24, 2015 | | $ | 1,528 |
| | $ | 1,528 |
| Senior notes and debentures, 5.00% through 7.45%, due 2015 through 2098 | | 1,815 |
| | 1,815 |
| Credit facility due December 31, 2014(a) | | 410 |
| | 175 |
| Subsidiary borrowings (as obligor) | | | | | Kinder Morgan Finance Company, LLC, senior notes, 5.70% through 6.40%, due 2016 through 2036 | | 1,636 |
| | 1,636 |
| El Paso, senior notes, 6.50% through 8.25%, due 2014 through 2037 | | 3,830 |
| | 3,830 |
| EPC Building, LLC, promissory note, 3.967%, due 2014 through 2035 | | 459 |
| | 461 |
| EP preferred securities, 4.75%, due March 31, 2028 | | 280 |
| | 280 |
| Other miscellaneous subsidiary debt | | 138 |
| | 221 |
| Total debt — KMI | | 10,096 |
| | 9,946 |
| Less: Current portion of debt — KMI | | (1,128 | ) | | (725 | ) | Total long-term debt outstanding — KMI | | 8,968 |
| | 9,221 |
| KMGP, $1,000 Liquidation Value Series A Fixed-to-Floating Rate Term Cumulative Preferred Stock | | 100 |
| | 100 |
| Total long-term debt — KMI(b) | | $ | 9,068 |
| | $ | 9,321 |
| | | | | | KMP and EPB | | | | | KMP | | | | | Senior notes, 2.65% through 9.00%, due 2014 through 2044 | | $ | 17,100 |
| | $ | 15,600 |
| Commercial paper borrowings(c) | | 419 |
| | 979 |
| Credit facility due May 1, 2018 | | — |
| | — |
| KMP subsidiary borrowings (as obligor) | | | | | TGP senior notes, 7.00% through 8.375%, due 2016 through 2037 | | 1,790 |
| | 1,790 |
| EPNG senior notes, 5.95% through 8.625%, due 2017 through 2032 | | 1,115 |
| | 1,115 |
| Copano senior notes, 7.125%, due April 1, 2021 | | 332 |
| | 332 |
| Other miscellaneous subsidiary debt | | 97 |
| | 98 |
| Total debt — KMP | | 20,853 |
| | 19,914 |
| Less: Current portion of debt — KMP(d) | | (1,243 | ) | | (1,504 | ) | Total long-term debt — KMP(b) | | 19,610 |
| | 18,410 |
| EPB | | | | | EPPOC | | | | | Senior notes, 4.10% through 7.50%, due 2015 through 2042 | | 2,260 |
| | 2,260 |
| Credit facility due May 27, 2016(e) | | — |
| | — |
| EPB subsidiary borrowings (as obligor) | | | | | Colorado Interstate Gas Company, L.L.C. (CIG), senior notes, 5.95% through 6.85%, due 2015 through 2037 | | 475 |
| | 475 |
| SLNG senior notes, 9.50% through 9.75%, due 2014 through 2016 | | 64 |
| | 135 |
| SNG notes, 4.40% through 8.00%, due 2017 through 2032 | | 1,211 |
| | 1,211 |
| Other financing obligations | | 183 |
| | 175 |
| Total debt — EPB | | 4,193 |
| | 4,256 |
| Less: Current portion of debt — EPB | | (41 | ) | | (77 | ) | Total long-term debt — EPB(b) | | 4,152 |
| | 4,179 |
| Total long-term debt outstanding — KMP and EPB | | $ | 23,762 |
| | $ | 22,589 |
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_______ | | (a) | As of March 31, 2014 and December 31, 2013, the weighted average interest rates on KMI’s credit facility borrowings were 2.66% and 2.67%, respectively. |
| | (b) | Excludes debt fair value adjustments. As of March 31, 2014 and December 31, 2013, our “Debt fair value adjustments” increased our combined debt balances by $1,969 million and $1,977 million, respectively. In addition to all unamortized debt discount/premium amounts and purchase accounting on our debt balances, our debt fair value adjustments also include (i) amounts associated with the offsetting entry for hedged debt; and (ii) any unamortized portion of proceeds received from the early termination of interest rate swap agreements. For further information about our debt fair value adjustments, see Note 5 “Risk Management—Debt Fair Value Adjustments.” |
| | (c) | As of March 31, 2014 and December 31, 2013, the average interest rates on KMP’s outstanding commercial paper borrowings were 0.26% and 0.28%, respectively. The borrowings under KMP’s commercial paper program were used principally to finance the acquisitions and capital expansions made during the first three months of 2014, and in the near term, KMP expects that its short-term liquidity and financing needs will be met primarily through borrowings made under its commercial paper program. |
| | (d) | Amounts include outstanding commercial paper borrowings discussed above in footnote (c). |
The estimated fair value of our outstanding debt balances (both short-term and long-term and including debt fair value adjustments), is disclosed below (in millions): | | | | | | | | | | | | | | | | | | March 31, 2014 | | December 31, 2013 | | Carrying Value | | Estimated Fair Value | | Carrying Value | | Estimated Fair Value | Total debt | $ | 37,211 |
| | $ | 37,917 |
| | $ | 36,193 |
| | $ | 36,248 |
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