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Significant equity transactions, restructuring transactions, mergers and acquisitions and equity investments- Alibaba Health (Details) HKD in Millions, $ in Millions, shares in Billions | 1 Months Ended | 12 Months Ended |  |  |
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May 31, 2017 HKD shares | Apr. 30, 2016 CNY (¥) | Jul. 31, 2015 CNY (¥) | Apr. 30, 2014 HKD | Apr. 30, 2014 CNY (¥) | Mar. 31, 2017 CNY (¥) | Mar. 31, 2016 CNY (¥) | Mar. 31, 2017 USD ($) | Mar. 31, 2017 CNY (¥) | Jul. 31, 2015 HKD | Jul. 31, 2015 CNY (¥) | Mar. 31, 2015 CNY (¥)
Acquisition |  |  |  |  |  |  |  |  |  |  |  |
Issuance of ordinary shares |  |  |  |  |  | ¥ 11,189,000,000 |  |  |  |  |  |
The allocation of the equity value at the date of the deemed acquisition |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | ¥ 81,645,000,000 | $ 18,221 | ¥ 125,420,000,000 |  |  | ¥ 41,933,000,000
The equity value comprised of: |  |  |  |  |  |  |  |  |  |  |  |
- fair value of previously held equity interests |  | ¥ 6,376,000,000 |  |  |  |  |  |  |  |  |  |
Developed technology and patents | Maximum |  |  |  |  |  |  |  |  |  |  |  |
The equity value comprised of: |  |  |  |  |  |  |  |  |  |  |  |
Estimated amortization periods |  |  |  |  |  | 5 years |  |  |  |  |  |
Trade names, trademarks and domain names | Maximum |  |  |  |  |  |  |  |  |  |  |  |
The equity value comprised of: |  |  |  |  |  |  |  |  |  |  |  |
Estimated amortization periods |  |  |  |  |  | 20 years |  |  |  |  |  |
User base and customer relationships | Maximum |  |  |  |  |  |  |  |  |  |  |  |
The equity value comprised of: |  |  |  |  |  |  |  |  |  |  |  |
Estimated amortization periods |  |  |  |  |  | 6 years |  |  |  |  |  |
Alibaba Health |  |  |  |  |  |  |  |  |  |  |  |
Acquisition |  |  |  |  |  |  |  |  |  |  |  |
Equity interest held (as a percentage) |  |  |  |  |  |  |  |  |  | 54.00% | 54.00% |
Equity interest held in subsidiary (as a percentage) |  |  |  |  |  |  |  |  |  | 38.00% | 38.00% |
Equity value |  |  |  |  |  |  |  |  |  | HKD 64,319 | ¥ 50,723,000,000 |
Gain recognized in relation to the revaluation of previously held equity interest relating to obtaining control |  |  |  |  |  |  | ¥ 18,603,000,000 |  |  |  |  |
The allocation of the equity value at the date of the deemed acquisition |  |  |  |  |  |  |  |  |  |  |  |
Net assets acquired |  |  |  |  |  |  |  |  |  |  | 1,290,000,000 |
Goodwill |  |  |  |  |  |  |  |  |  |  | 49,320,000,000 |
Deferred tax assets |  |  |  |  |  |  |  |  |  |  | 19,000,000 |
Deferred tax liabilities |  |  |  |  |  |  |  |  |  |  | (19,000,000) |
Total |  |  |  |  |  |  |  |  |  | HKD 64,319 | 50,723,000,000 |
The equity value comprised of: |  |  |  |  |  |  |  |  |  |  |  |
- fair value of previously held equity interests |  |  | ¥ 19,264,000,000 |  |  |  |  |  |  |  |  |
- fair value of noncontrolling interests |  |  | 31,459,000,000 |  |  |  |  |  |  |  |  |
Total |  |  | ¥ 50,723,000,000 |  |  |  |  |  |  |  |  |
Weighted average amortization period |  |  | 2 years 7 months 6 days |  |  |  |  |  |  |  |  |
Alibaba Health | Future |  |  |  |  |  |  |  |  |  |  |  |
Acquisition |  |  |  |  |  |  |  |  |  |  |  |
Issuance of ordinary shares | HKD | HKD 3,800 |  |  |  |  |  |  |  |  |  |  |
Issuance of ordinary shares (in shares) | shares | 1.2 |  |  |  |  |  |  |  |  |  |  |
Equity interest held in subsidiary (as a percentage) | 46.00% |  |  |  |  |  |  |  |  |  |  |
Alibaba Health | Maximum |  |  |  |  |  |  |  |  |  |  |  |
The equity value comprised of: |  |  |  |  |  |  |  |  |  |  |  |
Estimated amortization periods |  |  | 3 years |  |  |  |  |  |  |  |  |
Alibaba Health | Developed technology and patents |  |  |  |  |  |  |  |  |  |  |  |
The allocation of the equity value at the date of the deemed acquisition |  |  |  |  |  |  |  |  |  |  |  |
Amortizable intangible assets |  |  |  |  |  |  |  |  |  |  | 70,000,000 |
Alibaba Health | Trade names, trademarks and domain names |  |  |  |  |  |  |  |  |  |  |  |
The allocation of the equity value at the date of the deemed acquisition |  |  |  |  |  |  |  |  |  |  |  |
Amortizable intangible assets |  |  |  |  |  |  |  |  |  |  | 35,000,000 |
Alibaba Health | User base and customer relationships |  |  |  |  |  |  |  |  |  |  |  |
The allocation of the equity value at the date of the deemed acquisition |  |  |  |  |  |  |  |  |  |  |  |
Amortizable intangible assets |  |  |  |  |  |  |  |  |  |  | ¥ 8,000,000 |
Special purpose entity | Ordinary Shares |  |  |  |  |  |  |  |  |  |  |  |
Acquisition |  |  |  |  |  |  |  |  |  |  |  |
Equity interest (as a percent) |  |  |  | 70.00% | 70.00% |  |  |  |  |  |  |
Alibaba Health | Yunfeng |  |  |  |  |  |  |  |  |  |  |  |
Acquisition |  |  |  |  |  |  |  |  |  |  |  |
Consideration paid to related party for giving up its voting rights with respect to its indirect interest in investee |  |  | ¥ 0 |  |  |  |  |  |  |  |  |
Alibaba Health | Ordinary Shares |  |  |  |  |  |  |  |  |  |  |  |
Acquisition |  |  |  |  |  |  |  |  |  |  |  |
Equity interest (as a percent) |  |  |  | 38.00% | 38.00% |  |  |  |  |  |  |
Purchase consideration, equity method |  |  |  | HKD 932 | ¥ 741,000,000 |  |  |  |  |  |  |
Company and Yunfeng | Alibaba Health | Ordinary Shares |  |  |  |  |  |  |  |  |  |  |  |
Acquisition |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity interest acquired |  |  |  | 54.00% | 54.00% |  |  |  |  |  |  |
Yunfeng | Special purpose entity | Ordinary Shares |  |  |  |  |  |  |  |  |  |  |  |
Acquisition |  |  |  |  |  |  |  |  |  |  |  |
Equity interest (as a percent) |  |  |  | 30.00% | 30.00% |  |  |  |  |  |  |

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