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Significant mergers and acquisitions and investments - Koala (Details) ¥ in Millions, shares in Millions, $ in Millions | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2019 CNY (¥) shares | Sep. 30, 2019 USD ($) shares | Mar. 31, 2022 CNY (¥) | Mar. 31, 2021 CNY (¥) | Mar. 31, 2020 CNY (¥) | Mar. 31, 2022 USD ($) | Sep. 30, 2019 USD ($)
The allocation of the purchase price at the date of acquisition |  |  |  |  |  |  |
Goodwill |  |  | ¥ 269,581 | ¥ 292,771 | ¥ 276,782 | $ 42,525 |
Total purchase price is comprised of: |  |  |  |  |  |  |
- cash consideration |  |  | ¥ 5,282 | ¥ 27,014 | ¥ 16,022 |  |
Trade names, trademarks and domain names | Maximum |  |  |  |  |  |  |
Total purchase price is comprised of: |  |  |  |  |  |  |
Estimated amortization periods |  |  | 20 years |  |  |  |
User base and customer relationships | Maximum |  |  |  |  |  |  |
Total purchase price is comprised of: |  |  |  |  |  |  |
Estimated amortization periods |  |  | 16 years |  |  |  |
Non-compete agreements | Maximum |  |  |  |  |  |  |
Total purchase price is comprised of: |  |  |  |  |  |  |
Estimated amortization periods |  |  | 10 years |  |  |  |
Developed technology and patents | Maximum |  |  |  |  |  |  |
Total purchase price is comprised of: |  |  |  |  |  |  |
Estimated amortization periods |  |  | 7 years |  |  |  |
Koala |  |  |  |  |  |  |
Acquisition |  |  |  |  |  |  |
Percentage of equity interest acquired | 100.00% |  |  |  |  |  | 100.00%
Aggregate purchase price | ¥ 13,326 | $ 1,874 |  |  |  |  |
Newly-issued ordinary shares (in shares) | shares | 14.3 | 14.3 |  |  |  |  |
Newly-issued ordinary shares | ¥ 2,252 |  |  |  |  |  | $ 316
The allocation of the purchase price at the date of acquisition |  |  |  |  |  |  |
Net assets acquired | 1,621 |  |  |  |  |  |
Goodwill | 6,781 |  |  |  |  |  |
Deferred tax liabilities | (338) |  |  |  |  |  |
Total | 13,326 |  |  |  |  |  |
Total purchase price is comprised of: |  |  |  |  |  |  |
- cash consideration | 10,025 |  |  |  |  |  |
- share consideration | 2,252 |  |  |  |  |  | $ 316
- contingent consideration | 1,049 |  |  |  |  |  |
Total | 13,326 |  |  |  |  |  |
Inventories | ¥ 1,943 |  |  |  |  |  |
Weighted average amortization period | 8 years 6 months | 8 years 6 months |  |  |  |  |
Koala | Maximum |  |  |  |  |  |  |
Total purchase price is comprised of: |  |  |  |  |  |  |
- contingent consideration | ¥ 846 |  |  |  |  |  |
Estimated amortization periods | 13 years | 13 years |  |  |  |  |
Koala | Trade names, trademarks and domain names |  |  |  |  |  |  |
The allocation of the purchase price at the date of acquisition |  |  |  |  |  |  |
Amortizable intangible assets | ¥ 2,531 |  |  |  |  |  |
Koala | User base and customer relationships |  |  |  |  |  |  |
The allocation of the purchase price at the date of acquisition |  |  |  |  |  |  |
Amortizable intangible assets | 1,297 |  |  |  |  |  |
Koala | Non-compete agreements |  |  |  |  |  |  |
The allocation of the purchase price at the date of acquisition |  |  |  |  |  |  |
Amortizable intangible assets | 1,040 |  |  |  |  |  |
Koala | Developed technology and patents |  |  |  |  |  |  |
The allocation of the purchase price at the date of acquisition |  |  |  |  |  |  |
Amortizable intangible assets | ¥ 394 |  |  |  |  |  |
Koala | American Depositary Shares ("ADSs") |  |  |  |  |  |  |
Acquisition |  |  |  |  |  |  |
Newly-issued ordinary shares (in shares) | shares | 1.8 | 1.8 |  |  |  |  |

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