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Leases (Details 2) - CNY (¥)
¥ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Leases      
Operating lease cost ¥ 8,917 ¥ 7,951 ¥ 6,763
Short-term lease cost 3,358 3,181 2,782
Total 12,275 11,132 9,545
Cash paid for operating leases ¥ 9,086 ¥ 7,915 ¥ 6,715