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Litigation, Environmental and Other Contingencies Other Contingencies (Details) (Debt Securities [Member], USD $) In Millions, unless otherwise specified | Mar. 31, 2014
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Kinder Morgan Energy Partners, L.P. [Member] |
Loss Contingencies [Line Items] |
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 5,900
El Paso Pipeline Partners, L.P. [Member] |
Loss Contingencies [Line Items] |
Guarantor Obligations, Maximum Exposure, Undiscounted | 470
KMI Asset Drop Down [Member] | Kinder Morgan Energy Partners, L.P. [Member] |
Loss Contingencies [Line Items] |
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 5,200

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- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 + Details
Name: | us-gaap_GuaranteeObligationsMaximumExposure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration