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Acquisition Narrative (Details) (USD $)
In Millions, except Share data, unless otherwise specified
 0 Months Ended 3 Months Ended 6 Months Ended 6 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended 0 Months Ended 6 Months Ended 0 Months Ended 0 Months Ended 6 Months Ended 0 Months Ended 4 Months Ended
May 24, 2012
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Dec. 31, 2011
Jun. 30, 2012
Principal Owners and Affiliates [Member]
Dec. 31, 2011
Principal Owners and Affiliates [Member]
Jun. 30, 2012
Energy Segment [Member]
Jun. 30, 2012
Energy Segment [Member]
Dec. 31, 2011
Energy Segment [Member]
May 04, 2012
CVR Energy, Inc. [Member]
cash_contingent_payments
Jun. 30, 2012
CVR Energy, Inc. [Member]
May 04, 2012
CVR Energy, Inc. [Member]
Maximum [Member]
May 04, 2012
CVR Energy, Inc. [Member]
Energy Segment [Member]
May 04, 2012
CVR Energy, Inc. [Member]
Energy Segment [Member]
Petroleum [Member]
May 04, 2012
CVR Energy, Inc. [Member]
Energy Segment [Member]
Nitrogen Fertilizer [Member]
May 04, 2012
CVR Partners, LP [Member]
Energy Segment [Member]
May 07, 2012
IEP Energy [Member]
Principal Owners and Affiliates [Member]
Jun. 30, 2012
IEP Energy [Member]
Principal Owners and Affiliates [Member]
Jun. 30, 2012
IEP Energy [Member]
CVR Energy, Inc. [Member]
May 04, 2012
IEP Energy [Member]
CVR Energy, Inc. [Member]
May 04, 2012
IEP Parties [Member]
CVR Energy, Inc. [Member]
May 03, 2012
CVR Energy, Inc. [Member]
Business Acquisition [Line Items]                                                
Share price, CVR acquisition (in ones)                       $ 30                        
Number of cash contingent payment rights (in ones)                       1                        
Common shares of CVR tendered                       48,112,317                        
Percentage of CVR shares tendered                                           55.00%    
Percentage of equity ownership in subsidiary                                   70.00%     82.00%   70.00%  
Affiliate ownership interest             93.00% 92.60%                     6.40% 6.40%        
Business Combination, Acquisition Related Costs                         $ 1                      
Acquisition-date fair value of equity interest in CVR held by IEP Energy immediately before the acquisition date                       378                        
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Loss                       (1)                        
Solicitation period from third party to acquire 60 days                                              
CCP valuation assumption, expected life of CCP                         3 months 18 days                      
Net gain from investment activities   278 590 336 1,207       0 [1] 0 [1]                           102
Goodwill   2,023   2,023   1,127     894 894 0       894 652 242              
Goodwill recognized, expected to be tax deductible                             $ 0                  
EBITDA multiple used to calculate fair value of non-controlling interest in CVR                           6.5                    
[1] We consolidated CVR effective May 4, 2012.