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Leases (Details)
¥ in Millions, $ in Millions
Dec. 31, 2021
CNY (¥)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
CNY (¥)
Leases      
Operating lease ROU assets ¥ 19,987 $ 3,136 ¥ 15,484
Operating lease liabilities-current 6,665 1,046 5,513
Operating lease liabilities-non-current 13,721 $ 2,153 10,250
Total operating lease liabilities ¥ 20,386   ¥ 15,763
Weighted average remaining lease term 5 years 7 months 6 days 5 years 7 months 6 days 4 years 9 months 18 days
Weighted average discount rate 5.00% 5.00% 5.00%