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Breakdown of Contractual Assets and Liabilities, and Capitalized Costs - Movement in Contract Assets (Details) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Contract assets [abstract]
Contract assets, beginning balance	€ 342	€ 249
Additions	555	293
Disposals	(349)	(198)
Transfers	0	(1)
Translation differences and hyperinflation adjustments	6	(1)
Contract assets, ending balance	554	342
Long-term contracts
Contract assets [abstract]
Contract assets, beginning balance	209	145
Additions	261	113
Disposals	(12)	0
Transfers	(100)	(49)
Translation differences and hyperinflation adjustments	1	0
Contract assets, ending balance	359	209
Long-term contracts | Gross cost
Contract assets [abstract]
Contract assets, beginning balance	210	146
Additions	261	113
Disposals	(12)	0
Transfers	(100)	(49)
Translation differences and hyperinflation adjustments	1	0
Contract assets, ending balance	360	210
Long-term contracts | Impairment losses
Contract assets [abstract]
Contract assets, beginning balance	(1)	(1)
Additions	0	0
Disposals	0	0
Transfers	0	0
Translation differences and hyperinflation adjustments	0	0
Contract assets, ending balance	(1)	(1)
Short-term contracts
Contract assets [abstract]
Contract assets, beginning balance	133	104
Additions	294	180
Disposals	(337)	(198)
Transfers	100	48
Translation differences and hyperinflation adjustments	5	(1)
Contract assets, ending balance	195	133
Short-term contracts | Gross cost
Contract assets [abstract]
Contract assets, beginning balance	141	113
Additions	295	182
Disposals	(340)	(201)
Transfers	100	48
Translation differences and hyperinflation adjustments	6	(1)
Contract assets, ending balance	202	141
Short-term contracts | Impairment losses
Contract assets [abstract]
Contract assets, beginning balance	(8)	(9)
Additions	(1)	(2)
Disposals	3	3
Transfers	0	0
Translation differences and hyperinflation adjustments	(1)	0
Contract assets, ending balance	€ (7)	€ (8)

X

- Definition

The amount of an entity’s right to consideration in exchange for goods or services that the entity has transferred to a customer, when that right is conditioned on something other than the passage of time (for example, the entity’s future performance).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2022-03-24
-Paragraph 105
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2022-en-r&anchor=para_105&doctype=Standard
-URIDate 2022-03-24

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2022-03-24
-Paragraph 116
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2022-en-r&anchor=para_116_a&doctype=Standard
-URIDate 2022-03-24

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

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X

- Definition

The increase in contract assets resulting from business combinations. [Refer: Business combinations [member]; Contract assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 15
-IssueDate 2022-03-24
-Paragraph 118
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2022-en-r&anchor=para_118_a&doctype=Standard
-URIDate 2022-03-24

+ Details

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X

- Definition

Decrease Through Disposals, Contract Assets

+ References

No definition available.

+ Details

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X

- Definition

Increase (Decrease) Through Transfers, Contract Assets

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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X

- Definition

Increase (Decrease) Through Translation Differences And Hyperinflation Adjustments, Contract Assets

+ References

No definition available.

+ Details

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- Details

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