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Revenue (Details 2) ¥ in Millions, $ in Millions | 12 Months Ended
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Mar. 31, 2015 USD ($) | Mar. 31, 2015 CNY (¥) | Mar. 31, 2014 CNY (¥) | Mar. 31, 2013 CNY (¥)
Revenue by type of service |  |  |  |
Revenue | $ 12,293 | ¥ 76,204 | ¥ 52,504 | ¥ 34,517
Online marketing services |  |  |  |
Revenue by type of service |  |  |  |
Revenue |  | 40,135 | 30,928 | 20,681
P4P and display marketing |  |  |  |
Revenue by type of service |  |  |  |
Revenue |  | 36,197 | 27,869 | 18,130
Other online marketing services |  |  |  |
Revenue by type of service |  |  |  |
Revenue |  | 3,938 | 3,059 | 2,551
Commission |  |  |  |
Revenue by type of service |  |  |  |
Revenue |  | 22,705 | 12,778 | 6,412
Membership fees and value-added services |  |  |  |
Revenue by type of service |  |  |  |
Revenue |  | 6,431 | 5,135 | 5,086
Others |  |  |  |
Revenue by type of service |  |  |  |
Revenue |  | ¥ 6,933 | ¥ 3,663 | ¥ 2,338

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