General Recent Developments (Details) (USD $)	3 Months Ended
	Sep. 30, 2014	Sep. 19, 2014
Bridge Facility Contingent on Merger Transactions[Member] | Kinder Morgan, Inc. [Member]
Business Acquisition [Line Items]
Debt Instrument Incremental Basis Spread For Each 90 Days On Variable Rate	0.25%
Debt to EBITDA Ratio	650.00%
Line of Credit Facility, Maximum Borrowing Capacity		$ 5,000,000,000
Debt Instrument, Term	364 days
KMI Replacement Facility Contingent on Merger Transactions [Member] | Kinder Morgan, Inc. [Member]
Business Acquisition [Line Items]
Debt to EBITDA Ratio	650.00%
Line of Credit Facility, Current Borrowing Capacity		4,000,000,000
Line of Credit Facility, Maximum Borrowing Capacity		5,000,000,000
Debt Instrument, Term	5 years
Debt to EBITDA Ratio in Four Years	625.00%
Debt to EBITDA Ratio in Five Years	600.00%
Federal Funds Effective Swap Rate [Member] | KMI Replacement Facility Contingent on Merger Transactions [Member] | Kinder Morgan, Inc. [Member]
Business Acquisition [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.50%
Eurodollar [Member] | Bridge Facility Contingent on Merger Transactions[Member] | Kinder Morgan, Inc. [Member]
Business Acquisition [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.00%
Eurodollar [Member] | KMI Replacement Facility Contingent on Merger Transactions [Member] | Kinder Morgan, Inc. [Member]
Business Acquisition [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.00%
Minimum [Member] | Federal Funds Effective Swap Rate [Member] | Bridge Facility Contingent on Merger Transactions[Member] | Kinder Morgan, Inc. [Member]
Business Acquisition [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.50%
Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member] | Bridge Facility Contingent on Merger Transactions[Member] | Kinder Morgan, Inc. [Member]
Business Acquisition [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.25%
Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member] | KMI Replacement Facility Contingent on Merger Transactions [Member] | Kinder Morgan, Inc. [Member]
Business Acquisition [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.125%
Minimum [Member] | Eurodollar [Member] | Bridge Facility Contingent on Merger Transactions[Member] | Kinder Morgan, Inc. [Member]
Business Acquisition [Line Items]
Debt Instrument Incremental Basis Spread on Variable Rate based on Credit Rating	0.25%
Minimum [Member] | Eurodollar [Member] | KMI Replacement Facility Contingent on Merger Transactions [Member] | Kinder Morgan, Inc. [Member]
Business Acquisition [Line Items]
Debt Instrument Incremental Basis Spread on Variable Rate based on Credit Rating	0.125%
Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member] | Bridge Facility Contingent on Merger Transactions[Member] | Kinder Morgan, Inc. [Member]
Business Acquisition [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.75%
Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member] | KMI Replacement Facility Contingent on Merger Transactions [Member] | Kinder Morgan, Inc. [Member]
Business Acquisition [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.00%
Maximum [Member] | Eurodollar [Member] | Bridge Facility Contingent on Merger Transactions[Member] | Kinder Morgan, Inc. [Member]
Business Acquisition [Line Items]
Debt Instrument Incremental Basis Spread on Variable Rate based on Credit Rating	0.75%
Maximum [Member] | Eurodollar [Member] | KMI Replacement Facility Contingent on Merger Transactions [Member] | Kinder Morgan, Inc. [Member]
Business Acquisition [Line Items]
Debt Instrument Incremental Basis Spread on Variable Rate based on Credit Rating	1.00%
KMR [Member] | Merger Transactions [Member] | Kinder Morgan, Inc. [Member]
Business Acquisition [Line Items]
Liabilities Subject to Compromise, Early Contract Termination Fees	311,000,000
Kinder Morgan, Inc. [Member] | Merger Transactions [Member] | KMR [Member]
Business Acquisition [Line Items]
Liabilities Subject to Compromise, Early Contract Termination Fees	311,000,000
Kinder Morgan, Inc. [Member] | Merger Transactions [Member] | KMP [Member]
Business Acquisition [Line Items]
Liabilities Subject to Compromise, Early Contract Termination Fees	817,000,000
KMP [Member] | Merger Transactions [Member] | KMGP [Member]
Business Acquisition [Line Items]
Liabilities Subject to Compromise, Early Contract Termination Fees	$ 817,000,000