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Segment reporting (Details 2)
¥ in Millions, $ in Millions
12 Months Ended
Dec. 31, 2022
CNY (¥)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
CNY (¥)
Dec. 31, 2020
CNY (¥)
Share-based compensation ¥ (7,548)   ¥ (9,134) ¥ (4,156)
Total 19,723 $ 2,860 4,141 12,343
Unallocated items        
Share-based compensation (7,548)   (9,134) (4,156)
Amortization of intangible assets resulting from assets and business acquisitions (1,217)   (940) (723)
Effects of business cooperation arrangements (475)   29 236
Total ¥ (9,240)   ¥ (10,045) ¥ (4,643)