v2.4.0.8

Guarantee of Securities of Subsidiaries (Details) (USD $) In Billions, unless otherwise specified |  |  | 3 Months Ended
--- | --- | --- | ---
Mar. 31, 2014 El Paso Holdco [Member] | Dec. 31, 2013 El Paso Holdco [Member] | Mar. 31, 2014 El Paso Holdco and Finance Corp [Member] Kinder Morgan, Inc. [Member]
Guarantor Obligations [Line Items] |  |  |
Indemnified by parent of subsidiary debt | $ 3.8 | $ 3.8 |
Ownership Percentage of Subsidiary |  |  | 100.00%

X
- Definition Indemnified by parent of subsidiary debt + References No definition available. + Details
Name: | kmi_Indemnifiedbyparentofsubsidiarydebt
Namespace Prefix: | kmi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Subsidiary ownership percentage + References No definition available. + Details
Name: | kmi_SubsidiaryOwnershipPercentage
Namespace Prefix: | kmi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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