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Related party transactions - Service agreements and products - General (Details) - EUR (€)
€ in Thousands
9 Months Ended
Sep. 30, 2019
Sep. 30, 2019
Sep. 30, 2018
VFMCRP      
Disclosure of transactions between related parties [line items]      
Ownership in joint venture (as a percent) 45.00%    
Fresenius SE      
Disclosure of transactions between related parties [line items]      
Proportion of ownership interest in reporting entity (as a percent) 31.42% 31.42%  
Fresenius SE | Manufacturing of infusion bags      
Disclosure of transactions between related parties [line items]      
Term of related party agreement   10 years  
Purchase of machinery   € 3,853 € 3,429
Fresenius SE Companies | Minimum      
Disclosure of transactions between related parties [line items]      
Term of related party agreement   1 year  
Fresenius SE Companies | Maximum      
Disclosure of transactions between related parties [line items]      
Term of related party agreement   5 years