XML 90 R78.htm IDEA: XBRL DOCUMENT v3.20.2
Asset Retirement Obligations and Accrued Environmental Costs (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Environmental Liabilities [Line Items]      
Asset retirement obligations $ 6,206 $ 7,908 $ 7,798
Accrued environmental costs 171 178  
Total asset retirement obligations and accrued environmental costs 6,377 8,086  
Asset retirement obligations and accrued environmental costs due within one year [1] 1,025 398  
Long-term asset retirement obligations and accrued environmental costs 5,352 $ 7,688  
Other accruals      
Environmental Liabilities [Line Items]      
Asset retirement obligations and accrued environmental costs due within one year $ (741)    
[1]
*Classified as a current
 
liability on the balance sheet
 
under “Other accruals.” $
741
 
million relates to assets which
 
are held for sale as
 
of
December 31, 2019. For additional
 
information see Note 5—Asset Acquisitions
 
and Dispositions.