Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

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-Section 45

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- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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-Section 25

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- Definition

In a business combination achieved in stages, this element represents the amount of loss recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination.

+ References

No definition available.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

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-Section 50

-Paragraph 3

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- Definition

The net realized gain (loss) on investments sold during the period, not including gains (losses) on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, which, for cash flow reporting, is a component of proceeds from investing activities.

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- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 20

-Section 50

-Paragraph 1

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-Name Accounting Standards Codification

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-Section S99

-Paragraph 1

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

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-Article 9

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

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-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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Reportable Segments Other (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Mar. 14, 2013
Segment Reporting Information [Line Items]
Revenues	$ 16,226us-gaap_Revenues	$ 14,070us-gaap_Revenues	$ 9,973us-gaap_Revenues
Asset Impairment Charges	272us-gaap_AssetImpairmentCharges	0us-gaap_AssetImpairmentCharges	0us-gaap_AssetImpairmentCharges
Write off of Deferred Debt Issuance Cost			108
Interest Expense	1,807us-gaap_InterestExpense	1,690us-gaap_InterestExpense	1,427us-gaap_InterestExpense
Revenues from External Customers [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	10.00%	10.00%	10.00%
Express Pipeline System [Member] \| Kinder Morgan Energy Partners, L.P. [Member]
Segment Reporting Information [Line Items]
Equity Method Investment, Ownership Percentage		33.33%		33.33%
Natural Gas Pipelines [Member]
Segment Reporting Information [Line Items]
Revenues	10,153	8,613	5,230
Natural Gas Pipelines [Member] \| NGPL Holdco LLC [Member]
Segment Reporting Information [Line Items]
Asset Impairment Charges		65	200
Natural Gas Pipelines [Member] \| Eagle Ford Gathering LLC [Member]
Segment Reporting Information [Line Items]
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Loss		558
Equity Method Investment, Ownership Percentage		50.00%
CO2 [Member]
Segment Reporting Information [Line Items]
Revenues	1,960	1,857	1,677
CO2 [Member] \| Katz Strawn [Member]
Segment Reporting Information [Line Items]
Asset Impairment Charges	235
Kinder Morgan Canada [Member]
Segment Reporting Information [Line Items]
Revenues	291	302	311
Kinder Morgan Canada [Member] \| Express Pipeline System [Member]
Segment Reporting Information [Line Items]
Gain (Loss) on Sale of Investments		224
Unallocated [Member]
Segment Reporting Information [Line Items]
Revenues	36	36	35
Unallocated [Member] \| Certain items [Member]
Segment Reporting Information [Line Items]
Business Combination, Acquisition Related Costs			366
Single customer exceeding 10% of total [Member]
Segment Reporting Information [Line Items]
Revenues	$ 0	$ 0	$ 0