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v3.22.2

Summary of significant accounting policies- Long-lived assets (Details) ¥ in Millions, $ in Millions | 12 Months Ended
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Mar. 31, 2022 CNY (¥) | Mar. 31, 2022 USD ($) | Mar. 31, 2021 CNY (¥) | Mar. 31, 2020 CNY (¥)
Summary of significant accounting policies |  |  |  |
Amortization expenses | ¥ 20,257 | $ 3,195 | ¥ 21,520 | ¥ 21,904
Impairment of long-lived assets other than goodwill and licensed copyrights | 973 |  | 0 | 874
ASU 2019-02 |  |  |  |
Summary of significant accounting policies |  |  |  |
Cash outflows for the acquisition of licensed copyrights | ¥ 10,096 |  | 11,811 |
User base and customer relationships | Minimum |  |  |  |
Summary of significant accounting policies |  |  |  |
Estimated useful lives of intangible assets (in months/years) | 3 years | 3 years |  |
User base and customer relationships | Maximum |  |  |  |
Summary of significant accounting policies |  |  |  |
Estimated useful lives of intangible assets (in months/years) | 16 years | 16 years |  |
Trade names, trademarks and domain names | Minimum |  |  |  |
Summary of significant accounting policies |  |  |  |
Estimated useful lives of intangible assets (in months/years) | 5 years | 5 years |  |
Trade names, trademarks and domain names | Maximum |  |  |  |
Summary of significant accounting policies |  |  |  |
Estimated useful lives of intangible assets (in months/years) | 20 years | 20 years |  |
Developed technology and patents | Minimum |  |  |  |
Summary of significant accounting policies |  |  |  |
Estimated useful lives of intangible assets (in months/years) | 2 years | 2 years |  |
Developed technology and patents | Maximum |  |  |  |
Summary of significant accounting policies |  |  |  |
Estimated useful lives of intangible assets (in months/years) | 7 years | 7 years |  |
Non-compete agreements | Maximum |  |  |  |
Summary of significant accounting policies |  |  |  |
Estimated useful lives of intangible assets (in months/years) | 10 years | 10 years |  |
Licensed copyrights | Cost of revenue | Digital media and entertainment |  |  |  |
Summary of significant accounting policies |  |  |  |
Amortization expenses | ¥ 8,610 |  | 9,093 | 9,390
Impairment charges | ¥ 745 |  | ¥ 1,688 | ¥ 2,654
Licensed copyrights | Minimum |  |  |  |
Summary of significant accounting policies |  |  |  |
Estimated useful lives of intangible assets (in months/years) | 6 months | 6 months |  |
Licensed copyrights | Maximum |  |  |  |
Summary of significant accounting policies |  |  |  |
Estimated useful lives of intangible assets (in months/years) | 10 years | 10 years |  |
Computer equipment and software | Minimum |  |  |  |
Summary of significant accounting policies |  |  |  |
Estimated useful lives of property and equipment (in years) | 3 years | 3 years |  |
Computer equipment and software | Maximum |  |  |  |
Summary of significant accounting policies |  |  |  |
Estimated useful lives of property and equipment (in years) | 5 years | 5 years |  |
Furniture, office and transportation equipment and others | Minimum |  |  |  |
Summary of significant accounting policies |  |  |  |
Estimated useful lives of property and equipment (in years) | 3 years | 3 years |  |
Furniture, office and transportation equipment and others | Maximum |  |  |  |
Summary of significant accounting policies |  |  |  |
Estimated useful lives of property and equipment (in years) | 10 years | 10 years |  |
Building and other property | Minimum |  |  |  |
Summary of significant accounting policies |  |  |  |
Estimated useful lives of property and equipment (in years) | 10 years | 10 years |  |
Building and other property | Maximum |  |  |  |
Summary of significant accounting policies |  |  |  |
Estimated useful lives of property and equipment (in years) | 50 years | 50 years |  |

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