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Financial Assets and Financial Liabilities - Summary of Maturity Profile of Financial Liabilities Based on Contractual Undiscounted Payments (Details) - EUR (€) € in Thousands	Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Financial Liabilities [Line Items]
Lease liabilities	€ 84,158	€ 57,611
Financial liabilities	448,028	€ 105,061
Liquidity Risk
Disclosure Of Financial Liabilities [Line Items]
Interest bearing loans and borrowings	82,546
Trade and other payables	102,288
Lease liabilities	107,588
Contingent consideration	572
Other financial liabilities	74,076
Financial liabilities	367,070
Within One Year | Liquidity Risk
Disclosure Of Financial Liabilities [Line Items]
Interest bearing loans and borrowings	3,173
Trade and other payables	102,288
Lease liabilities	8,525
Other financial liabilities	74,076
Financial liabilities	188,062
1 to 5 Years | Liquidity Risk
Disclosure Of Financial Liabilities [Line Items]
Interest bearing loans and borrowings	12,643
Lease liabilities	27,283
Financial liabilities	39,926
More than 5 years | Liquidity Risk
Disclosure Of Financial Liabilities [Line Items]
Interest bearing loans and borrowings	66,730
Lease liabilities	71,780
Contingent consideration	572
Financial liabilities	€ 139,082

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The amount of contingent liabilities recognised in a business combination. [Refer: Contingent liabilities [member]; Business combinations [member]]

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The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Financial instruments, class [member]; Financial assets; Derivatives [member]]

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