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Proceeds from Noncontrolling Interests Initial Public Offering

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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Amount of increase in noncontrolling interest from sale of a portion of the parent's controlling interest.

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The cash inflow associated with the amount received from entity's first offering of stock to the public.

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Percentage of subsidiary's or equity investee's stock owned by parent company after stock transaction.

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Divestitures - Sale of Interest in Canadian Business (Details) $ / shares in Units, $ in Millions, $ in Millions			12 Months Ended
	May 30, 2017 USD ($) shares	May 30, 2017 CAD ($) $ / shares shares	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Contributions from noncontrolling interests - net proceeds from KML IPO			$ 0	$ 0	$ 1,245
KML preferred share issuance					1,049
Restricted Voting Shares \| Kinder Morgan Canada Limited
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Shares, Issued \| shares	102,942,000	102,942,000
Additional paid-in capital
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
KML preferred share issuance					314
Non-controlling interests
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
KML preferred share issuance					684
Accumulated other comprehensive loss
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
KML preferred share issuance					51
Kinder Morgan Canada Limited
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership percentage by noncontrolling owners		30.00%
Sale of Equity Interest in Canadian Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Contributions from noncontrolling interests - net proceeds from KML IPO					1,245
Deferred Income Tax Adjustment due to IPO					166
Sale of Equity Interest in Canadian Business \| Restricted Voting Shares \| Kinder Morgan Canada Limited
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Shares, Issued \| shares	102,942,000	102,942,000
Shares Issued, Price Per Share \| $ / shares		$ 17.00
Proceeds from Issuance Initial Public Offering	$ 1,299	$ 1,750
Sale of Equity Interest in Canadian Business \| Additional paid-in capital
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
KML preferred share issuance					314
Sale of Equity Interest in Canadian Business \| Non-controlling interests
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
KML preferred share issuance					$ 684
Sale of Equity Interest in Canadian Business \| Kinder Morgan Canada Limited Partnership
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership percentage by noncontrolling owners		30.00%
Controlling Interest Percentage Retained After Partial Sale	70.00%	70.00%