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Expense By Nature - Summary of Employee Benefit Expenses (Detail) - CNY (¥)
¥ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Classes of employee benefits expense [abstract]      
Wages, salaries and bonuses ¥ 11,681,753 ¥ 10,764,239 ¥ 8,689,993
Other social security costs, housing benefits and other employee benefits 3,157,771 2,787,803 2,473,673
Pension costs – defined contribution plans 1,430,074 427,917 1,244,100
Share-based payment 133,395 165,248 (55,443)
Employee benefits expense ¥ 16,402,993 ¥ 14,145,207 ¥ 12,352,323