Provisions - Contingent consideration provisions (Detail) - EUR (€) € in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Provisions - Text Details (Detail) [Line Items]
Acquisitions	€ 75	€ 45
Provisions for contingent considerations [Member]
Provisions - Text Details (Detail) [Line Items]
Other provisions at beginning of period	409	66	€ 11
Additional provisions, other provisions	32	6	0
Provision used, other provisions	44	48	(0)
Unused provision reversed, other provisions	68	1	2
Increase through adjustments arising from passage of time, other provisions	14	12	2
Acquisitions	6	366	62
Increase (decrease) through net exchange differences, other provisions	4	9	(8)
Other provisions at end of period	€ 354	€ 409	€ 66

The amount of additional other provisions made. [Refer: Other provisions]

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- Definition

The increase (decrease) in other provisions resulting from foreign currency exchange rate changes on provisions measured in a currency different from the entity's presentation currency. [Refer: Other provisions]

+ References

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The increase in other provisions through adjustments arising from the passage of time. [Refer: Other provisions]

+ References

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- Definition

The amount of provisions other than provisions for employee benefits. [Refer: Provisions]

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The amount used (ie incurred and charged against the provision) for other provisions. [Refer: Other provisions]

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- Definition

The amount reversed for unused other provisions. [Refer: Other provisions]

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