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Others, net (Details)
¥ in Millions, $ in Millions
12 Months Ended
Dec. 31, 2021
CNY (¥)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
CNY (¥)
Dec. 31, 2019
CNY (¥)
Others, net        
Gains/(losses) from fair value change of long-term investments ¥ (7,252)   ¥ 29,483 ¥ 3,496
Government financial incentives 2,482   2,545 2,222
Interest income 4,213   2,753 1,786
Gain from business and investment disposals 140 $ 22 279 1,199
Impairment of investments (574) (90) (208) (1,954)
Foreign exchange gains/(losses), net 42 7 (90) 124
Others 359   548 288
Total ¥ (590) $ (93) ¥ 35,310 ¥ 7,161