Entity Tax Identification Number Entity Tax Identification Number Rollovers EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Rollover Maximum Maximum [Member] Legal Entity [Axis] Legal Entity [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] EBP, Description of Plan [Table] EBP, Description of Plan [Table] Registered investment companies (mutual funds) Mutual Fund [Member] Document Fiscal Year Focus Document Fiscal Year Focus EBP 002 EBP 002 [Member] EBP 002 EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Related Party and Party-in-Interest Transactions [Table] Participant Contribution, Pretax, Maximum Annual Compensation to Total Compensation, Percentage EBP, Participant Contribution, Pretax, Maximum Annual Compensation to Total Compensation, Percentage EBP, Fully Benefit-Responsive Investment Contract [Table] EBP, Fully Benefit-Responsive Investment Contract [Table] Participant Contribution, Automatic Annual Increase Rate EBP, Participant Contribution, Automatic Annual Increase Rate EBP, Participant Contribution, Automatic Annual Increase Rate Total Wrapped Holdings EBP, Asset Held for Investment, Investment, Wrapped Holdings, Excluding Plan Interest in Master Trust, Current Value EBP, Asset Held for Investment, Investment, Wrapped Holdings, Excluding Plan Interest in Master Trust, Current Value Self-directed brokerage accounts EBP, Self-Directed Brokerage Account [Member] Total deductions EBP, Change in Net Asset Available for Benefit, Decrease Maximum borrowing amount EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount Fair Value Measurements EBP, Investment, Fair Value and NAV [Text Block] Minimum borrowing amount EBP, Note Receivable from Participant, Account, Minimum Borrowing, Amount Administrative expenses payable EBP, Accrued Expense EBP, Fully Benefit-Responsive Investment Contract [Abstract] Investments, at fair value (Notes 2, 3 and 4) Investments at fair value EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value Maximum Participant Account Balance, Involuntary Lump-Sum Distribution EBP, Maximum Participant Account Balance, Involuntary Lump-Sum Distribution EBP, Maximum Participant Account Balance, Involuntary Lump-Sum Distribution Level 1 Fair Value, Inputs, Level 1 [Member] Schedule of Reconciliation of the Plan Financial Statements to Form 5500 EBP, Reconciliation of Financial Statement to Form 5500 [Table Text Block] Investment Contracts EBP, Fully Benefit-Responsive Investment Contract [Text Block] EBP, Investment, Fair Value and NAV [Abstract] Total assets EBP, Asset Assets EBP, Asset [Abstract] Statistical Measurement [Axis] Statistical Measurement [Axis] Additions to net assets attributable to: EBP, Change in Net Asset Available for Benefit, Increase [Abstract] EBP, Statement of Change in Net Asset Available for Benefit [Table] EBP, Statement of Change in Net Asset Available for Benefit [Table] Payment of Benefits EBP, Payment to Participant [Policy Text Block] Unfunded commitments EBP, Fair Value, Investment, NAV, Unfunded Commitment Total liabilities EBP, Liability Participant Contribution, Pretax, Minimum Annual Compensation to Total Compensation, Percentage EBP, Participant Contribution, Pretax, Minimum Annual Compensation to Total Compensation, Percentage EBP, Participant Contribution, Pretax, Minimum Annual Compensation to Total Compensation, Percentage Amendment Flag Amendment Flag Basis of Presentation EBP, Basis of Accounting [Policy Text Block] EBP, Schedule of Asset Held for Investment [Table] EBP, Schedule of Asset Held for Investment [Table] Notes Receivable from Participants EBP, Receivable [Abstract] EBP, Description of Plan and Accounting Change [Abstract] Maximum Participant Account Balance, Eligible for Voluntary Distribution Options EBP, Maximum Participant Account Balance, Eligible for Voluntary Distribution Options EBP, Maximum Participant Account Balance, Eligible for Voluntary Distribution Options Schedule of Fair Value Measurements EBP, Investment, Fair Value and NAV [Table Text Block] Contributions EBP, Contribution [Abstract] Self-Directed Brokerage Account EBP, Participant-Directed [Member] Investments [Domain] Investments [Domain] Company contribution vesting period EBP, Employer Contribution Vesting Period EBP, Employer Contribution Vesting Period Use of Estimates EBP, Use of Estimate [Policy Text Block] Schedule of Assets EBP, Schedule of Asset Held for Investment [Text Block] Cover [Abstract] Change in difference between fair value and contract value for interest in the Fund relating to fully benefit-responsive investment contracts EBP, Reconciliation to Form 5500, Change in Net Asset Available for Benefit, Increase (Decrease) from Contract Value to Current Value Company contributions EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash Total Stable Value Fund EBP, Synthetic Investment Contract [Member] Minimum Minimum [Member] Investment Type [Axis] Investment Type [Axis] Interest income on notes receivable from Participants EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant Total contributions EBP, Change in Net Asset Available for Benefit, Increase from Contribution Participant contributions EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Excluding Rollover Net appreciation in fair value of investments EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment EBP, Description of Plan [Line Items] EBP, Description of Plan [Line Items] EBP, Plan Number EBP, Plan Number Net Income EBP, Form 5500 Caption, Net Income (Loss) [Abstract] EBP, Investment, Fair Value and NAV [Line Items] EBP, Investment, Fair Value and NAV [Line Items] Description of the Plan EBP, Description of Plan [Text Block] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Table] EBP, Statement of Net Asset Available for Benefit [Table] Difference between fair value and contract value for interest in the Fund relating to fully benefit-responsive investment contracts EBP, Reconciliation to Form 5500, Net Asset Available for Benefit, Contract Value to Current Value Adjustment EBP, Schedule of Asset Held for Investment [Line Items] EBP, Schedule of Asset Held for Investment [Line Items] Interest income EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Investment Tax Determination Letter, Date EBP, Tax Determination Letter, Date Kinder Morgan, Inc. Common Stock EBP, Employer, Common Stock [Member] EBP, Schedule of Asset Held for Investment [Abstract] Net Assets EBP, Form 5500 Caption, Net Assets [Abstract] EBP, Accounting Policy [Table] EBP, Accounting Policy [Table] Total additions EBP, Change in Net Asset Available for Benefit, Increase Allowance for credit losses EBP, Note Receivable from Participant, Allowance for Credit Loss Investment income: EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment [Abstract] Investment, Identifier [Axis] Investment, Identifier [Axis] Redemption period EBP, Fair Value, Investment, NAV, Redemption Restriction, Period in Effect Administrative fees EBP, Change in Net Asset Available for Benefit, Decrease from Administrative Expense Total Assets (Held at End of Year) EBP, Asset Held for Investment Risks and Uncertainties EBP, Risk and Uncertainty [Policy Text Block] Document Information [Line Items] Document Information [Line Items] EBP, Statement of Change in Net Asset Available for Benefit [Abstract] Level 2 Fair Value, Inputs, Level 2 [Member] Favorable tax determination letter, obtained EBP, Tax Determination Letter, Obtained [true false] Net income per Form 5500 EBP, Form 5500 Caption, Net Income (Loss) EBP, Fully Benefit-Responsive Investment Contract [Line Items] EBP, Fully Benefit-Responsive Investment Contract [Line Items] EBP, Tax Status [Table] EBP, Tax Status [Table] Net increase in net assets available for benefits Net increase in net assets available for benefits per the financial statements EBP, Change in Net Asset Available for Benefit, Increase (Decrease) Party-in-Interest Transactions EBP, Related Party and Party-in-Interest Transactions [Text Block] EBP, Related Party and Party-in-Interest Transactions [Abstract] EBP, Accounting Policy, Accounting Standard Update, and Change in Accounting Principle [Abstract] Automatic contribution rate EBP, Participant Contribution, Automatic, Deferral Rate Basis spread on interest rate EBP, Participant Loan, Basis Spread On Interest Rate EBP, Participant Loan, Basis Spread On Interest Rate Benefits paid to Participants EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant Dividend income EBP, Change in Net Asset Available for Benefit, Increase from Dividend Income on Investment Assets held at end of year, current value EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] EBP, Statement of Net Asset Available for Benefit [Abstract] Employer contribution rate EBP, Employer Contribution, Percentage EBP, Employer Contribution, Percentage EBP, Accounting Policy [Line Items] EBP, Accounting Policy [Line Items] EBP, Tax Status [Abstract] Document Period End Date Document Period End Date EBP, Reconciliation of Financial Statement to Form 5500 [Table] EBP, Reconciliation of Financial Statement to Form 5500 [Table] Other payable EBP, Other Liability EBP, Reconciliation of Financial Statement to Form 5500 [Line Items] EBP, Reconciliation of Financial Statement to Form 5500 [Line Items] Administrative and Investment Expenses EBP, Expense [Policy Text Block] Reconciliation of the Plan Financial Statements to Form 5500 EBP, Reconciliation of Financial Statement to Form 5500 [Text Block] Participant loans EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution Maximum Participant Account Balance, Automatic Rollover Designated By Committee EBP, Maximum Participant Account Balance, Automatic Rollover Designated By Committee EBP, Maximum Participant Account Balance, Automatic Rollover Designated By Committee Investment Valuation and Income Recognition EBP, Investment [Policy Text Block] Total Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] Document Type Document Type Net investment income EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Investment Income (Loss), before Investment Expense Entity Central Index Key Entity Central Index Key Borrowing term - Participant loans EBP, Asset Held for Investment, Participant Loan, Borrowing Term EBP, Asset Held for Investment, Participant Loan, Borrowing Term Interest rate- Participant loans EBP, Asset Held for Investment, Participant Loan, Interest Rate EBP, Reconciliation of Financial Statement to Form 5500 [Abstract] Common collective trusts Common Collective Trust [Member] EBP, Tax Status [Line Items] EBP, Tax Status [Line Items] Deductions from net assets attributable to: EBP, Change in Net Asset Available for Benefit, Decrease [Abstract] Forfeited balances used to reduce Company contributions EBP, Forfeited Nonvested Account, Decrease from Employer Contribution Notes receivable from Participants EBP, Note Receivable from Participant Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Summary of Significant Accounting Policies EBP, Summary of Accounting Policy [Text Block] Entity Registrant Name Entity Registrant Name Document Fiscal Period Focus Document Fiscal Period Focus Liabilities EBP, Liability [Abstract] Subsequent Events EBP, Subsequent Event [Policy Text Block] Tax Status EBP, Tax Status [Text Block] Maximum percent of vested balance EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage Forfeitures EBP, Forfeited Nonvested Account [Abstract] EBP, Participant-Directed and Nonparticipant-Directed Status [Domain] EBP, Participant-Directed and Nonparticipant-Directed Status [Domain] EBP, Participant-Directed and Nonparticipant-Directed Status [Axis] EBP, Participant-Directed and Nonparticipant-Directed Status [Axis] Document Information [Table] Document Information [Table] Notes Receivable from Participants EBP, Note Receivable from Participant [Policy Text Block] EBP, Related Party and Party-in-Interest Transactions [Line Items] EBP, Related Party and Party-in-Interest Transactions [Line Items] Other receivable EBP, Other Receivable Net assets available for benefits Net assets available for benefits, Beginning of year Net assets available for benefits, End of year Net asset available for benefits per the financial statements EBP, Net Asset Available for Benefit Entity [Domain] Entity [Domain] Contributions: EBP, Change in Net Asset Available for Benefit, Increase from Contribution [Abstract] Fully benefit-responsive investment contracts at contract value EBP, Investment, Excluding Plan Interest in Master Trust, Contract Value Terminated participants forfeited of Company contribution EBP, Forfeited Nonvested Account Net assets per Form 5500 EBP, Form 5500 Caption, Net Assets Measured at NAV Fair Value Measured at Net Asset Value Per Share [Member] EBP, Investment, Fair Value and NAV [Table] EBP, Investment, Fair Value and NAV [Table] EBP, Statement of Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Line Items]