Note 17 Goodwill, breakdown by CGU and changes of the year (Details) - EUR (€) € in Millions	6 Months Ended	12 Months Ended
Jun. 30, 2023	Dec. 31, 2022	Dec. 31, 2021
Disclosure of reconciliation of changes in goodwill [line items]
Additional recognition, goodwill	€ 0	€ 0
Increase (decrease) through net exchange differences, goodwill	85	41
Impairment loss recognised in profit or loss, goodwill	0	0
Increase decrease of companies held for sale	0	0
Increase (decrease) through transfers and other changes, intangible assets and goodwill	0	(152)
Goodwill	793	707	€ 818
MEXICO
Disclosure of reconciliation of changes in goodwill [line items]
Additional recognition, goodwill	0	0
Increase (decrease) through net exchange differences, goodwill	69	55
Impairment loss recognised in profit or loss, goodwill	0	0
Increase decrease of companies held for sale	0	0
Increase (decrease) through transfers and other changes, intangible assets and goodwill	0
Goodwill	628	559	504
TURKEY
Disclosure of reconciliation of changes in goodwill [line items]
Additional recognition, goodwill	0	0
Increase (decrease) through net exchange differences, goodwill	0	0
Impairment loss recognised in profit or loss, goodwill	0	0
Increase decrease of companies held for sale	0	0
Increase (decrease) through transfers and other changes, intangible assets and goodwill	0	(152)
Goodwill	0	0	152
COLOMBIA
Disclosure of reconciliation of changes in goodwill [line items]
Additional recognition, goodwill	0	0
Increase (decrease) through net exchange differences, goodwill	15	(16)
Impairment loss recognised in profit or loss, goodwill	0	0
Increase decrease of companies held for sale	0
Increase (decrease) through transfers and other changes, intangible assets and goodwill	0	0
Goodwill	133	118	134
CHILE
Disclosure of reconciliation of changes in goodwill [line items]
Additional recognition, goodwill	0	0
Increase (decrease) through net exchange differences, goodwill	1	1
Impairment loss recognised in profit or loss, goodwill	0	0
Increase decrease of companies held for sale	0	0
Increase (decrease) through transfers and other changes, intangible assets and goodwill	0	0
Goodwill	27	25	24
Other Countries [Member]
Disclosure of reconciliation of changes in goodwill [line items]
Additional recognition, goodwill	0	0
Increase (decrease) through net exchange differences, goodwill	0	1
Impairment loss recognised in profit or loss, goodwill	0	0
Increase decrease of companies held for sale	0	0
Increase (decrease) through transfers and other changes, intangible assets and goodwill	0	0
Goodwill	€ 5	€ 5	€ 4

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The amount of additional goodwill recognised, except goodwill included in a disposal group that, on acquisition, meets the criteria to be classified as held for sale in accordance with IFRS 5. [Refer: Goodwill; Disposal groups classified as held for sale [member]]

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The increase (decrease) in goodwill resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Goodwill]

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The increase (decrease) in intangible assets and goodwill resulting from transfers and changes that the entity does not separately disclose in the same statement or note. [Refer: Intangible assets and goodwill]

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