Summary of Significant Accounting Policies - Summary of Applicable Exchange Rates Used to Translate Financial Statements (Details)	12 Months Ended
Dec. 31, 2021 $ / shares EUR (€)	Dec. 31, 2021 EUR (€)	Dec. 31, 2021 EUR (€) € / shares	Dec. 31, 2021 EUR (€) USD ($)	Dec. 31, 2020 EUR (€) $ / shares	Dec. 31, 2020 EUR (€)	Dec. 31, 2020 EUR (€) € / shares	Dec. 31, 2020 EUR (€) USD ($)	Dec. 31, 2019 EUR (€) $ / shares	Dec. 31, 2019 EUR (€)	Dec. 31, 2019 EUR (€) € / shares	Dec. 31, 2019 EUR (€) USD ($)
Disclosure of voluntary change in accounting policy [abstract]
Exchange rate at period end	0.88292	0.88292	0.88292	0.88292	0.81493	0.81493	0.81493	0.81493	0.89015	0.89015	0.89015	0.89015
Average exchange rate for the period	0.8829	1	0.84542	1.13261	0.8149	1	0.87755	1.2271	0.8902	1	0.89341	1.1234

The spot exchange rate at the end of the reporting period. Exchange rate is the ratio of exchange for two currencies. Spot exchange rate is the exchange rate for immediate delivery.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2021-03-24

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