Provision for employee benefits - Sensitivity Analysis (Details) - Discount rate	12 Months Ended
Dec. 31, 2019 EUR (€)
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Decrease in percentage	0.25%
Increase in percentage	0.25%
Defined benefit obligation increase due to increase in discount rate	€ 45,500
Defined benefit obligation decrease due to decrease in discount rate	€ (33,700)
Defined benefit obligation increase (in percentage)	2.54%
Defined benefit obligation decrease (in percentage)	1.88%

Represents the percentage change in defined benefit obligation due to decrease in discount rate.

No definition available.

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- Definition

Represents the percentage change in defined benefit obligation due to increase in discount rate.

+ References

No definition available.

+ Details

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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- Definition

The increase (decrease) in a defined benefit obligation that would have been caused by a decrease in a significant actuarial assumption that was reasonably possible at the end of the reporting period. [Refer: Actuarial assumptions [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 19
-IssueDate 2019-01-01
-Paragraph 145
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2019-en-r&anchor=para_145_a&doctype=Standard
-URIDate 2019-03-27

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- Definition

The increase (decrease) in a defined benefit obligation that would have been caused by an increase in a significant actuarial assumption that was reasonably possible at the end of the reporting period. [Refer: Actuarial assumptions [member]]

+ References

+ Details

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- Definition

The reasonably possible percentage of the decrease in the actuarial assumption used to determine the present value of defined benefit obligation. [Refer: Actuarial assumptions [member]]

+ References

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- Definition

The reasonably possible percentage of the increase in the actuarial assumption used to determine the present value of defined benefit obligation. [Refer: Actuarial assumptions [member]]

+ References

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