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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, 2024 | Dec. 31, 2023
Reconciliation of the number of shares outstanding |  |
Outstanding at beginning of period (in shares) | 323,976.5 | 330,739.7
Forfeited | (6,865.0) | (652.5)
Acquired | (4,569.0) | (8,154.9)
Acquired |  | (1,483.0)
Released (in shares) | 2,909.3 | 3,527.2
Outstanding at end of period (in shares) | 315,451.8 | 323,976.5
Series "D" Shares |  |
Reconciliation of the number of shares outstanding |  |
Outstanding at beginning of period (in shares) | 80,094.7 | 82,169.9
Forfeited | (2,053.6) | (195.2)
Acquired | (1,366.8) | (2,439.5)
Acquired |  | (443.6)
Released (in shares) | 870.3 | 1,003.1
Outstanding at end of period (in shares) | 77,544.6 | 80,094.7
Series "L" Shares |  |
Reconciliation of the number of shares outstanding |  |
Outstanding at beginning of period (in shares) | 80,094.7 | 82,169.9
Forfeited | (2,053.6) | (195.2)
Acquired | (1,366.8) | (2,439.5)
Acquired |  | (443.6)
Released (in shares) | 870.3 | 1,003.1
Outstanding at end of period (in shares) | 77,544.6 | 80,094.7
Series "A" Shares |  |
Reconciliation of the number of shares outstanding |  |
Outstanding at beginning of period (in shares) | 113,441.7 | 114,750.2
Forfeited | (1,466.9) | (139.4)
Acquired | (976.2) | (1,742.5)
Acquired |  | (316.9)
Released (in shares) | 621.7 | 890.3
Outstanding at end of period (in shares) | 111,620.3 | 113,441.7
Series "B" Shares |  |
Reconciliation of the number of shares outstanding |  |
Outstanding at beginning of period (in shares) | 50,345.4 | 51,649.7
Forfeited | (1,290.9) | (122.7)
Acquired | (859.2) | (1,533.4)
Acquired |  | (278.9)
Released (in shares) | 547.0 | 630.7
Outstanding at end of period (in shares) | 48,742.3 | 50,345.4
CPOs |  |
Reconciliation of the number of shares outstanding |  |
Outstanding at beginning of period (in shares) | 2,288.4 | 2,347.7
Forfeited | (58.7) | (5.6)
Acquired | (39.0) | (69.7)
Acquired |  | (12.7)
Released (in shares) | 24.9 | 28.7
Outstanding at end of period (in shares) | 2,215.6 | 2,288.4

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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 2024-01-01 -Paragraph 79 -Subparagraph a -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_79_a_iv&doctype=Standard -URIDate 2024-03-27 + Details
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