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Other operating (expense) / income, net
 12 Months Ended
Dec. 31, 2021
Analysis of income and expense [abstract]  
Other operating (expense) / income, net Other operating (expense) / income, net
 202120202019
Gain from disposal of farmland and other assets (Note 21)— 2,064 1,354 
Loss from the sale of subsidiaries (Note 21)10 (554)— 
Loss from commodity derivative financial instrument(15,990)(8,320)(618)
(Loss) / gain from disposal of other property items(397)2,198 (329)
Net (loss) / gain from fair value adjustment of investment property(4,331)1,077 (325)
Others1,940 5,522 (904)
 (18,768)1,987 (822)