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Share-based Compensation and Employee Benefits (Summary of Future Vesting of Outstanding Restricted Stock Awards) (Details) - Kinder Morgan Inc 2015 Amended and Restated Stock Incentive Plan [Member] - Restricted Stock [Member] - Class P - shares	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding	13,154,605	10,518,344	9,038,137	7,645,105
2019 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding	4,048,963
2020 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding	3,537,544
2021 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding	4,814,403
2022 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding	152,104
2023 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding	121,093
Thereafter [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding	480,498

X

- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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+ References

No definition available.

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