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Leases (Details 3) - CNY (¥)
¥ in Millions
Dec. 31, 2021
Dec. 31, 2020
Leases    
2022 ¥ 6,778  
2023 4,807  
2024 3,338  
2025 2,292  
2026 1,504  
2027 and thereafter 4,843  
Total lease payments 23,562  
Less: interest (3,176)  
Present value of operating lease liabilities ¥ 20,386 ¥ 15,763