XML 39 R32.htm IDEA: XBRL DOCUMENT v3.21.2
Property, plant and equipment -Impairments (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Disclosure of impairment loss and reversal of impairment loss [line items]        
Total net impairment losses (reversals) recognised $ (276) $ 374 $ 152 $ 2,827
Goodwill [member]        
Disclosure of impairment loss and reversal of impairment loss [line items]        
Total net impairment losses (reversals) recognised 0 0 1 1
Other intangible assets [member]        
Disclosure of impairment loss and reversal of impairment loss [line items]        
Total net impairment losses (reversals) recognised 1 0 1 0
Acquisition costs related to oil and gas prospects [member]        
Disclosure of impairment loss and reversal of impairment loss [line items]        
Total net impairment losses (reversals) recognised 113 111 117 170
Producing and development assets [Member]        
Disclosure of impairment loss and reversal of impairment loss [line items]        
Total net impairment losses (reversals) recognised (390) 263 33 2,656
Property Plant And Equipment [member]        
Disclosure of impairment loss and reversal of impairment loss [line items]        
Total net impairment losses (reversals) recognised (390) 263 21 2,379
Property Plant And Equipment [member] | Goodwill [member]        
Disclosure of impairment loss and reversal of impairment loss [line items]        
Total net impairment losses (reversals) recognised 0 0 0 0
Property Plant And Equipment [member] | Other intangible assets [member]        
Disclosure of impairment loss and reversal of impairment loss [line items]        
Total net impairment losses (reversals) recognised 0 0 0 0
Property Plant And Equipment [member] | Acquisition costs related to oil and gas prospects [member]        
Disclosure of impairment loss and reversal of impairment loss [line items]        
Total net impairment losses (reversals) recognised 0 0 0 0
Property Plant And Equipment [member] | Producing and development assets [Member]        
Disclosure of impairment loss and reversal of impairment loss [line items]        
Total net impairment losses (reversals) recognised (390) 263 21 2,379
Intangible assets [member]        
Disclosure of impairment loss and reversal of impairment loss [line items]        
Total net impairment losses (reversals) recognised 114 111 131 448
Intangible assets [member] | Goodwill [member]        
Disclosure of impairment loss and reversal of impairment loss [line items]        
Total net impairment losses (reversals) recognised 0 0 1 1
Intangible assets [member] | Other intangible assets [member]        
Disclosure of impairment loss and reversal of impairment loss [line items]        
Total net impairment losses (reversals) recognised 1 0 1 0
Intangible assets [member] | Acquisition costs related to oil and gas prospects [member]        
Disclosure of impairment loss and reversal of impairment loss [line items]        
Total net impairment losses (reversals) recognised 113 111 117 170
Intangible assets [member] | Producing and development assets [Member]        
Disclosure of impairment loss and reversal of impairment loss [line items]        
Total net impairment losses (reversals) recognised $ 0 $ 0 $ 12 $ 277