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Stockholders Equity Noncontrolling Interests (Details) (USD $)
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3 Months Ended | 3 Months Ended | 3 Months Ended | 3 Months Ended | 3 Months Ended | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Mar. 31, 2013
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Dec. 31, 2012
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Mar. 31, 2013
Kinder Morgan Energy Partners, L.P. [Member]
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Mar. 31, 2012
Kinder Morgan Energy Partners, L.P. [Member]
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Dec. 31, 2012
Kinder Morgan Energy Partners, L.P. [Member]
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Mar. 31, 2013
EPB [Member]
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Mar. 31, 2013
El Paso Pipeline Partners, L.P. [Member]
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Mar. 31, 2012
El Paso Pipeline Partners, L.P. [Member]
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Dec. 31, 2012
El Paso Pipeline Partners, L.P. [Member]
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Mar. 31, 2013
KMR [Member]
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May 15, 2013
KMR [Member]
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Dec. 31, 2012
KMR [Member]
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Mar. 31, 2013
Other [Member]
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Dec. 31, 2012
Other [Member]
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Mar. 31, 2013
General Partner [Member]
El Paso Pipeline Partners, L.P. [Member]
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Mar. 31, 2013
Subsequent Event [Member]
Kinder Morgan Energy Partners, L.P. [Member]
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Mar. 31, 2013
Dividend Declared [Member]
El Paso Pipeline Partners, L.P. [Member]
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Mar. 31, 2013
Noncontrolling Interest [Member]
Kinder Morgan Energy Partners, L.P. [Member]
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Mar. 31, 2012
Noncontrolling Interest [Member]
Kinder Morgan Energy Partners, L.P. [Member]
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Mar. 31, 2013
Noncontrolling Interest [Member]
EPB [Member]
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| Noncontrolling Interest [Line Items] | ||||||||||||||||||||
| Value of units available for sale under equity distribution agreement | $ 500,000,000 | |||||||||||||||||||
| Proceeds from Issuance of Common Limited Partners Units | 385,000,000 | 21,000,000 | 1,000,000 | |||||||||||||||||
| Stockholders' Equity Attributable to Noncontrolling Interest | 10,633,000,000 | 10,234,000,000 | 3,537,000,000 | 3,270,000,000 | 4,131,000,000 | 4,111,000,000 | 2,769,000,000 | 2,716,000,000 | 196,000,000 | 137,000,000 | ||||||||||
| Partners' capital account, sale of units (in shares) | 4,600,000 | 525,900 | ||||||||||||||||||
| Paid dividend (usd per share) | $ 1.29 | $ 1.16 | $ 0.61 | $ 299,000,000 | $ 251,000,000 | $ 76,000,000 | ||||||||||||||
| Increasing noncontrolling interests | 384,000,000 | |||||||||||||||||||
| Increase accumulated deferred income taxes | 8,000,000 | |||||||||||||||||||
| Increase in additional paid in capital | 14,000,000 | |||||||||||||||||||
| Share distribution per share outstanding | 0.014770 | |||||||||||||||||||
| Common stock, shares issued (in shares) | 1,726,952 | |||||||||||||||||||
| Declared dividend (usd per share) | $ 1.30 | $ 1.20 | $ 0.62 | $ 1.30 | $ 0.62 | |||||||||||||||
| Increase in deferred income taxes due to equity issuance | 1,804,596 | 1,464,145 | ||||||||||||||||||
| Distribution Made to Member or Limited Partner, Cash Distributions Declared | $ 1.30 | |||||||||||||||||||