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Equity - Summary of Capital Stock (Detail) - shares shares in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Disclosure of classes of share capital [line items] |  |  |
Capital stock (in shares) | 16,806,658 | 16,806,658 | 16,806,658
A |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital stock (in shares) | 7,936,628 | 7,936,628 | 7,936,628
B |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital stock (in shares) | 1,575,624 | 1,575,624 | 1,575,624
D |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital stock (in shares) | 4,668,366 | 4,668,366 | 4,668,366
Series L shares, without par value |  |  |
Disclosure of classes of share capital [line items] |  |  |
Capital stock (in shares) | 2,626,040 | 2,626,040 | 2,626,040

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