for the period from January 1 to December 31, 2021
  | 
            
  | 
            Notes  | 
            
  | 
            2021  | 
            
  | 
            2020  | 
        ||||
|---|---|---|---|---|---|---|---|---|---|---|
  | 
            
  | 
            
  | 
            
  | 
            
  | 
            
  | 
        |||||
Net income  | 
            
  | 
            
  | 
            
  | 
            144,125  | 
            
  | 
            (219,182)  | 
        ||||
Depreciation/amortization  | 
            
  | 
            
  | 
            339,284  | 
            
  | 
            465,327  | 
        |||||
Unrealized net foreign exchange gain/loss  | 
            
  | 
            
  | 
            
  | 
            2,709  | 
            
  | 
            20,635  | 
        ||||
Other non-cash transactions  | 
            
  | 
            
  | 
            
  | 
            5,525  | 
            
  | 
            (984)  | 
        ||||
Income tax expense/income  | 
            
  | 
            
  | 
            52,749  | 
            
  | 
            (54,054)  | 
        |||||
Interest expenses/income  | 
            
  | 
            
  | 
            20,689  | 
            
  | 
            26,167  | 
        |||||
Change in inventories  | 
            
  | 
            
  | 
            
  | 
            35,273  | 
            
  | 
            (5,410)  | 
        ||||
Change in receivables and other assets  | 
            
  | 
            
  | 
            
  | 
            (73,565)  | 
            
  | 
            64,983  | 
        ||||
Change in trade payables and other liabilities1  | 
            
  | 
            
  | 
            
  | 
            196,580  | 
            
  | 
            (5,814)  | 
        ||||
Result from disposal of non-current assets  | 
            
  | 
            
  | 
            
  | 
            (7,684)  | 
            
  | 
            (1,651)  | 
        ||||
Change in provisions for pensions  | 
            
  | 
            
  | 
            (3,093)  | 
            
  | 
            (7,527)  | 
        |||||
Change in other provisions1  | 
            
  | 
            
  | 
            
  | 
            (3,305)  | 
            
  | 
            (10,965)  | 
        ||||
Income taxes paid  | 
            
  | 
            
  | 
            
  | 
            (51,180)  | 
            
  | 
            (31,613)  | 
        ||||
Cash flow from operating activities  | 
            
  | 
            
  | 
            
  | 
            658,107  | 
            
  | 
            239,912  | 
        ||||
Investments in property, plant and equipment  | 
            
  | 
            
  | 
            (81,280)  | 
            
  | 
            (58,469)  | 
        |||||
Investments in intangible assets  | 
            
  | 
            
  | 
            (20,264)  | 
            
  | 
            (19,611)  | 
        |||||
Acquisition of subsidiaries and other business entities  | 
            
  | 
            
  | 
            
  | 
            (2,963)  | 
            
  | 
            1,961  | 
        ||||
Impact from change in basis of consolidation  | 
            
  | 
            
  | 
            
  | 
            58  | 
            
  | 
            0  | 
        ||||
Cash receipts from sales of property, plant and equipment and intangible assets  | 
            
  | 
            
  | 
            
  | 
            5,437  | 
            
  | 
            370  | 
        ||||
Cash flow from investing activities  | 
            
  | 
            
  | 
            
  | 
            (99,012)  | 
            
  | 
            (75,749)  | 
        ||||
Dividends paid to equity holders of the parent company  | 
            
  | 
            
  | 
            (2,761)  | 
            
  | 
            (2,761)  | 
        |||||
Change in current financial liabilities  | 
            
  | 
            
  | 
            (173,808)  | 
            
  | 
            (56,632)  | 
        |||||
Change in non-current financial liabilities  | 
            
  | 
            
  | 
            0  | 
            
  | 
            104,793  | 
        |||||
Repayment of lease liabilities  | 
            
  | 
            
  | 
            
  | 
            (210,749)  | 
            
  | 
            (187,466)  | 
        ||||
Interest paid  | 
            
  | 
            
  | 
            
  | 
            (21,186)  | 
            
  | 
            (27,512)  | 
        ||||
Interest received  | 
            
  | 
            
  | 
            
  | 
            862  | 
            
  | 
            2,284  | 
        ||||
Cash flow from financing activities  | 
            
  | 
            
  | 
            
  | 
            (407,642)  | 
            
  | 
            (167,294)  | 
        ||||
Exchange-rate related changes in cash and cash equivalents  | 
            
  | 
            
  | 
            
  | 
            7,964  | 
            
  | 
            (4,218)  | 
        ||||
Change in cash and cash equivalents  | 
            
  | 
            
  | 
            
  | 
            159,417  | 
            
  | 
            (7,349)  | 
        ||||
Cash and cash equivalents at the beginning of the period  | 
            
  | 
            
  | 
            
  | 
            125,277  | 
            
  | 
            132,626  | 
        ||||
Cash and cash equivalents at the end of the period  | 
            
  | 
            
  | 
            284,694  | 
            
  | 
            125,277  | 
        |||||
        
  | 
        ||||||||||