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Loans To Customers - Summary of Movement In Loans To Customers (Parenthetical) (Detail) - CNY (¥)
¥ in Millions
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Loans and receivables, category [member]      
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]      
Customers amounting ¥ 847 ¥ 1,181 ¥ 279