Consolidated balance sheets (Parenthetical) - EUR (€)	Jun. 30, 2019	Dec. 31, 2018
Consolidated balance sheets
Allowance for doubtful accounts	€ 130,649,963.81	€ 118,015,000

The amount of an allowance account used to record uncollectible trade receivables.

No definition available.

Name:	fms_AllowanceAccountForTradeReceivables
Namespace Prefix:	fms_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant