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Assets held for sale (Tables)
 12 Months Ended
Dec. 31, 2021
Assets Held For Sale [Abstract]  
Schedule of Assets and Liabilities Held For Sale
The following table summarizes the carrying value of the assets and liabilities that are classified as held for sale at December 31, 2021.
2021
Trade and other receivables 29 
Contract costs 4 
Prepaid expenses 1 
Property, plant and equipment 2 
Intangible assets 1 
Other non-current assets 7 
Goodwill 6 
Total assets held for sale 50 
Trade payables and other liabilities 18 
Contract liabilities 7 
Deferred tax liabilities 5 
Other non-current liabilities 5 
Total liabilities held for sale 35 
Net assets held for sale 15