Segment and Corporate Information - Segment Activities Calc2 (Details) - EUR (€)	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenue Table
Revenue	€ 4,213,705,000	€ 4,471,021,000	€ 8,189,334,000	€ 9,019,141,000
Inter-segment revenue	77,733,000	0	0	0
Revenue external customers	€ 4,135,972,000	€ 4,471,021,000	€ 8,189,334,000	€ 9,019,141,000

The income arising in the course of an entity's ordinary activities. Income is increases in economic benefits during the accounting period in the form of inflows or enhancements of assets or decreases of liabilities that result in an increase in equity, other than those relating to contributions from equity participants.

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+ Details