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Capital Stock and Long-term Retention Plan - Reconciliation of shares (Details) - shares shares in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Reconciliation of the number of shares outstanding |  |
Outstanding at beginning of period (in shares) | 330,739.7 | 329,295.9
Forfeited | 652.5 | 728.0
Acquired. | (8,154.9) | (3,357.3)
Acquired | (1,483.0) | (2,798.9)
Released (in shares) | 3,527.2 | 8,328.0
Outstanding at end of period (in shares) | 323,976.5 | 330,739.7
Series D Shares [Member] |  |
Reconciliation of the number of shares outstanding |  |
Outstanding at beginning of period (in shares) | 82,169.9 | 81,873.7
Forfeited | 195.2 | 217.8
Acquired. | (2,439.5) | (1,004.3)
Acquired | (443.6) | (837.3)
Released (in shares) | 1,003.1 | 2,355.6
Outstanding at end of period (in shares) | 80,094.7 | 82,169.9
Series L Shares [Member] |  |
Reconciliation of the number of shares outstanding |  |
Outstanding at beginning of period (in shares) | 82,169.9 | 81,873.7
Forfeited | 195.2 | 217.8
Acquired. | (2,439.5) | (1,004.3)
Acquired | (443.6) | (837.3)
Released (in shares) | 1,003.1 | 2,355.6
Outstanding at end of period (in shares) | 80,094.7 | 82,169.9
Series Shares [Member] |  |
Reconciliation of the number of shares outstanding |  |
Outstanding at beginning of period (in shares) | 114,750.2 | 114,085.0
Forfeited | 139.4 | 155.5
Acquired. | (1,742.5) | (717.4)
Acquired | (316.9) | (598.0)
Released (in shares) | 890.3 | 2,136.1
Outstanding at end of period (in shares) | 113,441.7 | 114,750.2
Series B Shares [Member] |  |
Reconciliation of the number of shares outstanding |  |
Outstanding at beginning of period (in shares) | 51,649.7 | 51,463.5
Forfeited | 122.7 | 136.9
Acquired. | (1,533.4) | (631.3)
Acquired | (278.9) | (526.3)
Released (in shares) | 630.7 | 1,480.7
Outstanding at end of period (in shares) | 50,345.4 | 51,649.7
Ordinary Participation Certificates [Member] |  |
Reconciliation of the number of shares outstanding |  |
Outstanding at beginning of period (in shares) | 2,347.7 | 2,339.2
Forfeited | 5.6 | 6.2
Acquired. | (69.7) | (28.7)
Acquired | (12.7) | (23.9)
Released (in shares) | 28.7 | 67.3
Outstanding at end of period (in shares) | 2,288.4 | 2,347.7

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- Definition The number of shares that have been authorised and issued, reduced by treasury shares held. [Refer: Treasury shares] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 79 -Subparagraph a -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_79_a_iv&doctype=Standard -URIDate 2023-03-23 + Details
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