XML 141 R134.htm IDEA: XBRL DOCUMENT v3.20.2
27. Lease liabilities (Details Narrative) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Disclosure of detailed information about property, plant and equipment [line items]      
Variable lease expense $ 368 $ 455  
Variable lease to fixed payments percentage 13.00% 20.00%  
Short term $ 82 $ 437  
Construction in progress [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Assets not yet available for use $ 51,001   $ 50,130