Segment Information - Summary of Key Financial Performance Measures of Segments Including Revenue, Cost of Revenue, and Gross Profit (Details) - EUR (€) € in Millions	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure Of Operating Segments [Line Items]
Revenue	€ 5,259	€ 4,090	€ 2,952
Cost of revenue	3,906	3,241	2,551
Gross (loss)/profit	1,353	849	401
Premium
Disclosure Of Operating Segments [Line Items]
Revenue	4,717	3,674	2,657
Cost of revenue	3,461	2,868	2,221
Gross (loss)/profit	1,256	806	436
Ad-Supported
Disclosure Of Operating Segments [Line Items]
Revenue	542	416	295
Cost of revenue	445	373	330
Gross (loss)/profit	€ 97	€ 43	€ (35)

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