v2.4.0.6
Document And Entity Information (USD $)
12 Months Ended
Dec. 31, 2011
Jun. 30, 2011
Jan. 31, 2012
Class A [Member]
Jan. 31, 2012
Class B [Member]
Jan. 31, 2012
Class C [Member]
Jan. 31, 2012
Class P [Member]
Entity Information [Line Items]            
Entity Registrant Name Kinder Morgan, Inc.          
Entity Central Index Key 0001506307          
Current Fiscal Year End Date --12-31          
Entity Well-known Seasoned Issuer Yes          
Entity Voluntary Filers No          
Entity Current Reporting Status Yes          
Entity Filer Category Non-accelerated Filer          
Entity Public Float   $ 3,172,704,838        
Entity Common Stock, Shares Outstanding     535,972,387 94,132,596 2,318,258 170,921,691
Document Fiscal Year Focus 2011          
Document Fiscal Period Focus FY          
Document Type 10-K          
Amendment Flag false          
Document Period End Date Dec. 31, 2011