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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
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

X

- 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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X

- 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.

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- Definition

Effect due to extension options and other.

+ References

No definition available.

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X

- 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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X

- Definition

Minimum lease payments payable under operating lease.

+ References

No definition available.

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