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Debt Current Portion of Debt (Details) - USD ($)
$ in Millions
Mar. 31, 2017
Feb. 28, 2017
TGP [Member] | KMP Senior notes, 7.50%, due April 1, 2017 [Member]    
Short-term Debt [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage 7.50%  
Senior Notes, Current $ 300  
EPNG [Member] | KMP Senior Notes, 5.95%, due April 15, 2017 [Member]    
Short-term Debt [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage 5.95%  
Senior Notes, Current $ 355  
Kinder Morgan, Inc. [Member] | KMI Senior Notes, 7.0%, due June 15, 2017 [Member]    
Short-term Debt [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage 7.00%  
Senior Notes, Current $ 786  
Kinder Morgan, Inc. [Member] | KMI Senior Notes, 2.0%, due December 1, 2017 [Member]    
Short-term Debt [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage 2.00%  
Senior Notes, Current $ 500  
Kinder Morgan, Inc. [Member] | KMI Senior Notes, 7.0%, due June 15, 2017 [Member]    
Short-term Debt [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage 7.00%  
Senior Notes, Current $ 82  
Kinder Morgan Finance Company, LLC [Member] | KMI Senior Notes, 6.0%, due January 15, 2018 [Member]    
Short-term Debt [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage 6.00%  
Senior Notes, Current $ 750  
Kinder Morgan Energy Partners, L.P. [Member] | KMP Senior notes, 5.95%, due February 15, 2018 [Member]    
Short-term Debt [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage 5.95%  
Senior Notes, Current $ 975  
Kinder Morgan Energy Partners, L.P. [Member] | KMP Senior notes, 6.0%, due February 1, 2017 [Member]    
Short-term Debt [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage   6.00%