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Leases (Details 2) - CNY (¥)
¥ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Leases      
Operating lease cost ¥ 7,951 ¥ 6,763 ¥ 4,903
Short-term lease cost 3,181 2,782 1,902
Total 11,132 9,545 6,805
Cash paid for operating leases ¥ 7,915 ¥ 6,715 ¥ 4,801