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Deferred revenue and customer advances (Details)
¥ in Millions, $ in Millions
Sep. 30, 2020
CNY (¥)
Sep. 30, 2020
USD ($)
Mar. 31, 2020
CNY (¥)
Deferred revenue ¥ 25,939   ¥ 23,195
Customer advances 22,161   17,168
Total 48,100   40,363
Less: current portion (45,905) $ (6,761) (38,338)
Non-current portion ¥ 2,195 $ 323 ¥ 2,025