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Unsecured senior notes (Detail 2)
¥ in Millions
Dec. 31, 2021
CNY (¥)
Long-term Debt, Fiscal Year Maturity [Abstract]  
Within 1 year ¥ 0
Between 1 to 2 years 0
Between 2 to 3 years 0
Between 3 to 4 years 0
Between 4 to 5 years 3,188
Beyond 5 years 6,299
Total ¥ 9,487