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Commitments and contingencies (Details 1)
¥ in Millions
12 Months Ended
Dec. 31, 2021
CNY (¥)
Investment Commitment  
Capital commitments and Long-Term Debt Obligations  
Investment commitments primarily related to capital contribution obligation ¥ 14,915
Capital commitments  
Capital commitments and Long-Term Debt Obligations  
Total commitments contracted but not yet reflected ¥ 10,207
Purchase Commitment | Total net revenues | Customer | Customer Concentration Risk  
Capital commitments and Long-Term Debt Obligations  
Concentration risk (as a percentage) 1.00%