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Acquisitions and Divestitures Pro Forma Information (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified |
3 Months Ended |
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Mar. 31, 2013
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APT and SCT, Copano and the Goldsmith Landreth Unit acquisitions occurred as of beginning of reporting period [Member]
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| Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items] | |
| Revenues | $ 3,610 |
| Income from Continuing Operations, Net of Tax | 630 |
| Loss from Discontinued Operations, Net of Tax | (2) |
| Net Income Attributable to Noncontrolling Interests | (356) |
| Net Income Attributable to Kinder Morgan, Inc. | 272 |
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APT and SCT, Copano and the Goldsmith Landreth Unit acquisitions occurred as of beginning of reporting period [Member] | Class P [Member]
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| Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items] | |
| Diluted Earnings Per Class P Share | $ 0.26 |
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KMP's Copano and Goldsmith acquisitions [Member]
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| Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items] | |
| Net Income | $ 628 |