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Other Commercial Matters (Details) - USD ($) $ in Millions |  |  |  |  |  | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
May 24, 2016 | Feb. 04, 2016 | Apr. 21, 2015 | Oct. 25, 2013 | Jan. 01, 2004 | Sep. 30, 2013 | Jun. 30, 2016 | Sep. 01, 2011
Gulf LNG Holdings Group LLC [Member] |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  | 50.00% |
Union Pacific Railroad Company v. Santa Fe Pacific Pipelines, Inc., SFPP, L.P., Kinder Morgan Operating L.P. “D”, Kinder Morgan G.P., Inc., et al. [Member] | SFPP L.P. [Member] | Pending Litigation [Member] |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Lessee Leasing Arrangements, Operating Leases, Term of Contract |  |  |  | 10 years | 10 years |  |  |
Loss Contingency, Damages Sought, Value |  |  |  | $ 22.3 |  |  |  |
Union Pacific Railroad Company v. Santa Fe Pacific Pipelines, Inc., SFPP, L.P., Kinder Morgan Operating L.P. “D”, Kinder Morgan G.P., Inc., et al. [Member] | SFPP L.P. [Member] | Loss on Long-term Purchase Commitment [Member] | Pending Litigation [Member] |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss Contingency, Initial Award Amount, Annual Rent Payable |  |  |  |  |  |  |  | $ 14.0
Plains Gas Solutions, LLC v. Tennessee Gas Pipeline Company, L.L.C. et al [Member] | Pending Litigation [Member] |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss Contingency, Damages Sought, Value |  |  |  |  |  | $ 100.0 |  |
Brinckerhoff v. El Paso Pipeline GP Company, LLC., et al. [Member] |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Gross |  |  | $ 1,130.0 |  |  |  |  |
Brinckerhoff v. El Paso Pipeline GP Company, LLC., et al. [Member] | Pending Litigation [Member] |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss Contingency, Damages Sought, Value |  |  | $ 171.0 |  |  |  |  |
Brinckerhoff v. El Paso Pipeline GP Company, LLC., et al. [Member] | Tentative Settlement [Member] |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss Contingency, Damages Sought, Value |  | $ 100.2 |  |  |  |  |  |
Brinckerhoff v. El Paso Pipeline GP Company, LLC., et al. [Member] | Elba Liquefaction & SLNG [Member] |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Business Acquisition, Additional Percentage of Interest Acquired |  |  | 49.00% |  |  |  |  |
Brinckerhoff v. El Paso Pipeline GP Company, LLC., et al. [Member] | SNG [Member] |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Business Acquisition, Additional Percentage of Interest Acquired |  |  | 15.00% |  |  |  |  |
Price Reporting Litigation [Member] | Pending Litigation [Member] |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss Contingency, Damages Sought, Value | $ 1,500.0 |  |  |  |  |  |  |
Price Reporting Litigation [Member] | Dismissed [Member] |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss Contingency, Damages Sought, Value | $ 500.0 |  |  |  |  |  |  |
Merger Transactions [Member] | Kinder Morgan Energy Partners, L.P. and El Paso Pipeline Partners, L.P. [Member] |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss Contingency, Pending Claims, Number |  |  |  |  |  |  | 5 |

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