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Revenue- Breakdown by segment (Details) ¥ in Millions, $ in Millions | 12 Months Ended
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Mar. 31, 2017 USD ($) | Mar. 31, 2017 CNY (¥) | Mar. 31, 2016 CNY (¥) | Mar. 31, 2015 CNY (¥)
Revenue breakdown |  |  |  |
Revenue | $ 22,994 | ¥ 158,273 | ¥ 101,143 | ¥ 76,204
Core commerce |  |  |  |
Revenue breakdown |  |  |  |
Revenue |  | 133,880 | 92,335 | 69,536
Cloud computing |  |  |  |
Revenue breakdown |  |  |  |
Revenue |  | 6,663 | 3,019 | 1,271
Digital media and entertainment |  |  |  |
Revenue breakdown |  |  |  |
Revenue |  | 14,733 | 3,972 | 2,191
Innovation initiatives and others |  |  |  |
Revenue breakdown |  |  |  |
Revenue |  | 2,997 | 1,817 | 3,206
Others | Core commerce |  |  |  |
Revenue breakdown |  |  |  |
Revenue |  | 755 | 385 | 113
PRC | Retail | Core commerce |  |  |  |
Revenue breakdown |  |  |  |
Revenue |  | 114,109 | 80,033 | 59,732
PRC | Wholesale | Core commerce |  |  |  |
Revenue breakdown |  |  |  |
Revenue |  | 5,679 | 4,288 | 3,205
International commerce | Retail | Core commerce |  |  |  |
Revenue breakdown |  |  |  |
Revenue |  | 7,336 | 2,204 | 1,768
International commerce | Wholesale | Core commerce |  |  |  |
Revenue breakdown |  |  |  |
Revenue |  | ¥ 6,001 | ¥ 5,425 | ¥ 4,718

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