Notes to the consolidated statements of income - Net deferred income tax assets and liabilities (Details) - EUR (€)	Jun. 30, 2018	Dec. 31, 2017
Notes to the consolidated statements of income
Deferred taxes assets	€ 334,478,000	€ 315,168,000
Deferred taxes liabilities	€ 518,193,000	€ 467,540,000

The amount of deferred tax liabilities net of deferred tax assets, when the absolute amount of deferred tax liabilities is greater than the absolute amount of deferred tax assets. [Refer: Deferred tax assets; Deferred tax liabilities]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 12
-IssueDate 2017-01-01
-Paragraph 81
-Subparagraph g
-Clause i
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2017-03-01&anchor=para_81_g_i&doctype=Standard
-URIDate 2017-03-09

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant