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Related Party Transactions Partnership Interests and Distributions (Details) (USD $)
In Millions, except Share data, unless otherwise specified
 3 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended
Jun. 30, 2010
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Limited Partner [Member]
Dec. 31, 2013
General Partner [Member]
Dec. 31, 2013
Operating limited partnerships [Member]
Dec. 31, 2013
Operating limited partnerships [Member]
General Partner [Member]
Dec. 31, 2013
Kinder Morgan Management, LLC [Member]
Dec. 31, 2012
Kinder Morgan Management, LLC [Member]
Dec. 31, 2013
KMI and Consolidated Affiliates [Member]
Dec. 31, 2013
General Partner [Member]
Dec. 31, 2013
Class B Units [Member]
Dec. 31, 2012
Class B Units [Member]
Dec. 31, 2013
Common Unit [Member]
Dec. 31, 2012
Common Unit [Member]
Dec. 31, 2013
i-units [Member]
Dec. 31, 2012
i-units [Member]
Dec. 31, 2013
i-units [Member]
Kinder Morgan Management, LLC [Member]
Dec. 31, 2013
General Partner [Member]
Common Unit [Member]
Dec. 31, 2012
General Partner [Member]
Common Unit [Member]
Dec. 31, 2013
Kinder Morgan, Inc. [Member]
Common Unit [Member]
Dec. 31, 2013
KMI and Consolidated Affiliates [Member]
Class B Units [Member]
Dec. 31, 2013
KMI and Consolidated Affiliates [Member]
Common Unit [Member]
Dec. 31, 2012
KMI and Consolidated Affiliates [Member]
Common Unit [Member]
Dec. 31, 2013
KMI and Consolidated Affiliates [Member]
i-units [Member]
Dec. 31, 2013
KMI's Consolidating Affiliates [Member]
Common Unit [Member]
Dec. 31, 2013
First [Member]
General Partner [Member]
Kinder Morgan Energy Partners, L.P. [Member]
Dec. 31, 2013
First [Member]
Unitholder [Member]
Kinder Morgan Energy Partners, L.P. [Member]
Dec. 31, 2013
Second [Member]
General Partner [Member]
Kinder Morgan Energy Partners, L.P. [Member]
Dec. 31, 2013
Second [Member]
Unitholder [Member]
Kinder Morgan Energy Partners, L.P. [Member]
Dec. 31, 2013
Third [Member]
General Partner [Member]
Kinder Morgan Energy Partners, L.P. [Member]
Dec. 31, 2013
Third [Member]
Unitholder [Member]
Kinder Morgan Energy Partners, L.P. [Member]
Dec. 31, 2013
Thereafter (after third) [Member]
General Partner [Member]
Kinder Morgan Energy Partners, L.P. [Member]
Dec. 31, 2013
Thereafter (after third) [Member]
Unitholder [Member]
Kinder Morgan Energy Partners, L.P. [Member]
Related Party Transaction [Line Items]                                                                    
Marginal percentage interest in distribution                                                     2.00% 98.00% 15.00% 85.00% 25.00% 75.00% 50.00% 50.00%
First incentive distribution waterfall cutoff   151,250                                                                
Percent of available cash that is required to be distributed   100.00%                                                                
Number of days subsequent to quarter end that cash is required to be distributed   45 days                                                                
Distributions from interim capital transactions $ 177                                                                  
Second incentive distribution target waterfall, low   151,250                                                                
Second incentive distribution target waterfall, high   178,750                                                                
Third incentive distribution targe waterfall, low   178,750                                                                
Third incentive distribution target waterfall, high   233,750                                                                
Final incentive distribution waterfall threshold   233,750                                                                
Allocation of distributions from interim capital transactions       98.00% 2.00%                                                          
Interim capital transaction unit value   0                                                                
Partners' Capital, Distributions Policies   3                                                                
Interim capital transaction distribution allocation after interim capital transaction unit value has been recovered       50.00% 50.00%                                                          
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest   1.00%       1.0101%                                                        
Number of limited partnership operations are conducted through   5                                                                
General Partners Effective Interest Percentage   2.00%                                                                
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest           98.9899% 0.9899%                                                      
Limited Partners' Capital Account, Units Outstanding   443,428,695 373,188,163                 5,313,400 5,313,400 312,791,561 252,756,425 125,323,734 115,118,338 125,323,734 1,724,000 1,724,000 18,169,815 5,313,400 20,563,455 19,314,003 15,934,516 4,117,640                
Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest               28.30% 30.80% 9.80% 0.39%