Income from operations - Other business income (expenses) (Detail) - EUR (€) € in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income from operations [Abstract]
Gains on disposals of investments	€ 0	€ 0	€ 69
Losses on disposals of investments	75	0	1
Gains on disposals of non-current assets	24	2	4
Losses on disposals of non-current assets	5	0	0
Gains on disposals of other remaining business	161	120	81
Losses on disposals of other remaining business	43	30	88
Impairment of goodwill	15	144	97
Other gains (losses)	48	(51)	(33)
Other income	186	122	154
Other expense, by function	€ 138	€ 173	€ 186

The gain on the disposal of investments.

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The gain on disposals of non-current assets. [Refer: Non-current assets]

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The losses on the disposal of investments.

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The losses on disposals of non-current assets. [Refer: Non-current assets]

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The amount of expenses that the entity does not separately disclose in the same statement or note when the entity uses the 'function of expense' form for its analysis of expenses.

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The gains (losses) that the entity does not separately disclose in the same statement or note.

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The amount of operating income that the entity does not separately disclose in the same statement or note.

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