v2.4.0.8
Impairments of Fixed Assets and Other - Narrative (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Significant Acquisitions and Disposals [Line Items]        
Impairments of fixed assets and other $ 40 $ 231 $ 60 $ 258
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down       44
Gathering and Processing Equipment [Member]
       
Significant Acquisitions and Disposals [Line Items]        
Impairments of fixed assets and other 10 0 10 0
Drilling Rigs [Member]
       
Significant Acquisitions and Disposals [Line Items]        
Impairments of fixed assets and other     15  
Leased Equipment Purchased     31  
Payments to Acquire Property, Plant, and Equipment     140  
Gain (Loss) on Contract Termination     8  
Exploration and Production Equipment [Member]
       
Significant Acquisitions and Disposals [Line Items]        
Impairments of fixed assets and other 3 4 23 4
Land and Building [Member]
       
Significant Acquisitions and Disposals [Line Items]        
Impairments of fixed assets and other 5 213 5 239
Land and Building [Member] | In the Oklahoma City Area [Member]
       
Significant Acquisitions and Disposals [Line Items]        
Impairments of fixed assets and other       26
Assets Held-for-sale [Member] | Land and Building [Member]
       
Significant Acquisitions and Disposals [Line Items]        
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down       134
Assets Held-for-sale [Member] | Land and Building [Member] | In the Fort Worth Area [Member]
       
Significant Acquisitions and Disposals [Line Items]        
Impairments of fixed assets and other       29
Net Acreage Shortfall [Member]
       
Significant Acquisitions and Disposals [Line Items]        
Other Cost and Expense, Operating $ 22