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Goodwill (Tables) | 12 Months Ended
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Mar. 31, 2015
Goodwill |
Schedule of changes in the carrying amount of goodwill |
|  |  | Amounts |
|  |  | (in millions of RMB) |
| Balance as of April 1, 2012 |  |  | 11,436 |
| Additions |  |  | 152 |
| Deconsolidation of a subsidiary |  |  | (137 | )
| Impairment |  |  | (157 | )
| Foreign currency translation adjustments |  |  | — |
​ | ​ | ​ | ​ | ​
| Balance as of March 31, 2013 |  |  | 11,294 |
| Additions |  |  | 543 |
| Impairment |  |  | (44 | )
| Foreign currency translation adjustments |  |  | — |
​ | ​ | ​ | ​ | ​
| Balance as of March 31, 2014 |  |  | 11,793 |
| Additions |  |  | 30,319 |
| Deconsolidation of a subsidiary |  |  | (4 | )
| Impairment |  |  | (175 | )
| Foreign currency translation adjustments |  |  | — |
​ | ​ | ​ | ​ | ​
| Balance as of March 31, 2015 |  |  | 41,933 |
​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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