XML 41 R28.htm IDEA: XBRL DOCUMENT
v3.20.2

General - Organization and Basis of Presentation (Details) | 6 Months Ended
--- | ---
Jun. 30, 2020 mi Terminals segment
General [Line Items] |
Miles of pipeline | mi | 83,000
Number of pipeline terminals owned interest in and/or operated | Terminals | 147
Number of reporting units | segment | 6

X
- Definition Miles Of Pipeline + References No definition available. + Details
Name: | kmi_MilesOfPipeline
Namespace Prefix: | kmi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number Of Pipeline Terminals Owned Interest In And Or Operated + References No definition available. + Details
Name: | kmi_NumberOfPipelineTerminalsOwnedInterestInAndOrOperated
Namespace Prefix: | kmi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment. + References No definition available. + Details
Name: | us-gaap_NumberOfReportingUnits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesGeneralDisclosuresLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration