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Inventories (Tables)
12 Months Ended
Dec. 31, 2019
Classes of current inventories [abstract]  
Disclosure Of Detailed Information About Inventories Explanatory [Table Text Block]
At 31 December
(in USD million)20192018
Crude oil2,1371,173
Petroleum products572345
Natural gas277274
Other377351
Inventories3,3632,144