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Investments in Associates and Joint Ventures - Summary of Investments in AFPI (Detail) - AF Payments, Inc. [Member] - Smart Communications, Inc. [Member] - shares shares in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Common Stock [Member] |  |
Disclosure of Investments in Associates and Joint Ventures [Line Items] |  |
Number of shares | 625.7 | 625.7
Preferred Stock [Member] |  |
Disclosure of Investments in Associates and Joint Ventures [Line Items] |  |
Number of shares | 314.2 | 254.3

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