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Changes in Significant Accounting Policies - Summary of Reconciliation of operating lease to lease liabilities (Detail) - EUR (€) € in Thousands | Dec. 31, 2019 | Jan. 01, 2019 | Dec. 31, 2018
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Disclosure Of Quantitative Information About Operating Lease Liabilities [Line Items] |  |  |
Operating lease commitments as at December 31, 2018 as disclosed under IAS 17 in the Group's consolidated financial statements |  | € 80,740 |
Effect due to discounted using the incremental borrowing rate as at January 1, 2019 |  | 63,320 |
Effect due to recognition exemption for leases of low-value assets |  | (33) |
Effect due to recognition exemption for leases with less than 12 months of lease term at transition |  | (1,744) |
Effect due to extension options and other |  | (4,785) |
Lease liabilities recognised as at January 1, 2019 | € 57,367 |  | € 56,758

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- Definition The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2019-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2019-en-r&anchor=para_47_b&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition Schedule disclosing information related to operating lease liabilities. + References No definition available. + Details
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- Definition Effect due to discounted using the incremental borrowing rate + References No definition available. + Details
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- Definition Effect due to extension options and other. + References No definition available. + Details
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- Definition Effect due to recognition exemption for leases + References No definition available. + Details
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- Definition Effect due to recognition exemption for leases of low-value assets. + References No definition available. + Details
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- Definition Minimum lease payments payable under operating lease. + References No definition available. + Details
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