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Risk Management Foreign Currency Risk Management (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2017 USD ($)
Derivative [Line Items] |
Cross-currency Swap Agreements | $ 1,358
KMI 1.50% Senior Notes Due 2022 [Member] |
Derivative [Line Items] |
Debt Instrument, Term | 7 years
KMI 2.25% Senior Notes Due 2027 [Member] |
Derivative [Line Items] |
Debt Instrument, Term | 12 years
Currency Swap [Member] | KMI 1.50% Senior Notes Due 2022 [Member] |
Derivative [Line Items] |
Debt Instrument, Interest Rate, Stated Percentage | 3.79%
Currency Swap [Member] | KMI 2.25% Senior Notes Due 2027 [Member] |
Derivative [Line Items] |
Debt Instrument, Interest Rate, Stated Percentage | 4.67%

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- Definition Cross-currency Swap Agreements + References No definition available. + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Details
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