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Investment in equity investees- General (Details) $ 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 (¥)
Cost method |  |  |  |
Balance at beginning of period |  | ¥ 33,264,000,000 | ¥ 15,673,000,000 |
Additions |  | 8,860,000,000 | 19,764,000,000 |
Less: disposals and transfers |  | (6,275,000,000) | (2,150,000,000) |
Less: impairment loss |  | (2,125,000,000) | (902,000,000) | ¥ (419,000,000)
Foreign currency translation adjustments |  | 1,680,000,000 | 879,000,000 |
Balance at end of period |  | 35,404,000,000 | 33,264,000,000 | 15,673,000,000
Equity method |  |  |  |
Balance at beginning of period |  | 58,197,000,000 | 18,204,000,000 |
Additions |  | 35,154,000,000 | 41,968,000,000 |
Share of results, other comprehensive income and other reserves |  | (2,074,000,000) | (1,296,000,000) |
Less: disposals and transfers |  | (6,215,000,000) | (751,000,000) |
Less: impairment loss |  | (245,000,000) | 0 | (438,000,000)
Foreign currency translation adjustments |  | 147,000,000 | 72,000,000 |
Balance at end of period |  | 84,964,000,000 | 58,197,000,000 | 18,204,000,000
Total, cost and equity methods |  |  |  |
Balance at beginning of period |  | 91,461,000,000 | 33,877,000,000 |
Additions |  | 44,014,000,000 | 61,732,000,000 |
Share of results, other comprehensive income and other reserves |  | (2,074,000,000) | (1,296,000,000) |
Less: disposals and transfers |  | (12,490,000,000) | (2,901,000,000) |
Less: impairment loss |  | (2,370,000,000) | (902,000,000) |
Foreign currency translation adjustments |  | 1,827,000,000 | 951,000,000 |
Balance at end of period | $ 17,487 | ¥ 120,368,000,000 | 91,461,000,000 | ¥ 33,877,000,000
Equity investee partial disposed |  |  |  |
Total, cost and equity methods |  |  |  |
Gain arising from disposal of investment |  |  | ¥ 3,078,000,000 |

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- Definition Other than temporary declines in value recognized against investments accounted for under the cost or equity methods of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down reflected in earnings. + References No definition available. + Details
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- Definition This item represents the entity's proportionate share for the period of the net income (loss) of its investee to which the equity method of accounting is applied. This item also includes share of results, other comprehensive income (loss) and other reserves related to equity method investees. + References No definition available. + Details
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- Definition Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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