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v3.25.2

Summary of significant accounting policies- Long-lived assets (Details) ¥ in Millions, $ in Millions | 12 Months Ended
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Mar. 31, 2025 CNY (¥) | Mar. 31, 2025 USD ($) | Mar. 31, 2024 CNY (¥) | Mar. 31, 2023 CNY (¥)
Summary of significant accounting policies |  |  |  |
Amortization expenses | ¥ 13,199 | $ 1,819 | ¥ 17,864 | ¥ 19,139
Impairment of long-lived assets other than goodwill and licensed copyrights | ¥ 4,611 |  | ¥ 14,847 | ¥ 1,922
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) | 10 years | 10 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 | Hujing Digital Media and Entertainment Group |  |  |  |
Summary of significant accounting policies |  |  |  |
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration] | Finite-Lived Intangible Assets, Net | Finite-Lived Intangible Assets, Net | Finite-Lived Intangible Assets, Net | Finite-Lived Intangible Assets, Net
Impairment charges | ¥ 0 |  | ¥ 0 | ¥ 1,133
Licensed copyrights | Cost of revenue | Hujing Digital Media and Entertainment Group |  |  |  |
Summary of significant accounting policies |  |  |  |
Amortization expenses | ¥ 7,497 |  | ¥ 8,361 | ¥ 8,446
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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