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Summary of significant accounting policies (Tables) | 12 Months Ended
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Mar. 31, 2025
Accounting Policies [Abstract] |
Schedule of financial information of the Consolidated VIEs and their subsidiaries | The following financial information of the consolidated VIEs and their subsidiaries was recorded in the accompanying consolidated financial statements:
|  | As of March 31, |
|  | 2024 |  |  | 2025 |
|  | RMB |  |  | RMB |
|  | (in millions) |
Cash and cash equivalents and short-term investments |  |  | 25,825 |  |  |  | 10,621 |
Investments in equity method investees and equity securities and other investments |  |  | 35,228 |  |  |  | 37,117 |
Accounts receivable and contract assets, net of allowance |  |  | 16,884 |  |  |  | 18,408 |
Amounts due from non-VIE subsidiaries of the Company |  |  | 36,405 |  |  |  | 53,792 |
Property and equipment, net and intangible assets, net |  |  | 11,927 |  |  |  | 19,911 |
Others |  |  | 33,276 |  |  |  | 40,429 |
Total assets |  |  | 159,545 |  |  |  | 180,278 |
Amounts due to non-VIE subsidiaries of the Company |  |  | 99,404 |  |  |  | 113,332 |
Accrued expenses, accounts payable and other liabilities |  |  | 45,634 |  |  |  | 50,521 |
Deferred revenue and customer advances |  |  | 15,586 |  |  |  | 19,126 |
Total liabilities |  |  | 160,624 |  |  |  | 182,979 |
2. Summary of significant accounting policies (Continued) (c) Consolidation (Continued)
|  | Year ended March 31, |
|  | 2023 |  |  | 2024 |  |  | 2025 |
|  | RMB |  |  | RMB |  |  | RMB |
|  | (in millions) |
Revenue (i) |  |  | 112,270 |  |  |  | 117,686 |  |  |  | 137,708 |
Net income (loss) |  |  | 2,442 |  |  |  | (3,193 | ) |  |  | (850 | )
Net cash provided by (used in) operating activities |  |  | 4,378 |  |  |  | 12,053 |  |  |  | (992 | )
Net cash used in investing activities |  |  | (2,044 | ) |  |  | (11,772 | ) |  |  | (33,847 | )
Net cash provided by financing activities |  |  | 1,386 |  |  |  | 5,626 |  |  |  | 25,933 |
(i) Revenue generated by the VIEs are primarily from cloud services, digital media and entertainment services and others.
Schedule of estimated useful lives of property and equipment | Depreciation is computed using the straight-line method with no residual value based on the estimated useful lives of the various classes of assets, which range as follows:
Computer equipment and software |  | 3 – 5 years
Furniture, office and transportation equipment and others |  | 3 – 10 years
Buildings and other property |  | 10 – 50 years
Property improvements |  | shorter of remaining lease period or estimated useful life
Schedule of estimated useful lives of identifiable intangible assets other than licensed copyrights | Separately identifiable intangible assets that have determinable lives continue to be amortized over their estimated useful lives using the straight-line method as follows:
User base and customer relationships |  | 3 – 16 years
Trade names, trademarks and domain names |  | 5 – 20 years
Developed technology and patents |  | 2 – 10 years
Non-compete agreements |  | over the contracted term of up to 10 years

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- Definition Tabular disclosure of the characteristics, including initial carrying value, residual amount, weighted average useful life, of finite-lived intangible assets acquired during the period by major class. A major class is composed of intangible assets that can be grouped together because they are similar, either by nature or by their use in the operations of the company. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-1 + Details
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- Definition Tabular disclosure of the significant judgments and assumptions made in determining whether a variable interest (as defined) held by the entity requires the variable interest entity (VIE) (as defined) to be consolidated and (or) disclose information about its involvement with the VIE, individually or in aggregate (as applicable); the nature of restrictions, if any, on the consolidated VIE's assets and on the settlement of its liabilities reported by an entity in its statement of financial position, including the carrying amounts of such assets and liabilities; the nature of, and changes in, the risks associated with involvement in the VIE; how involvement with the VIE affects the entity's financial position, financial performance, and cash flows; the lack of recourse if creditors (or beneficial interest holders) of the consolidated VIE have no recourse to the general credit of the primary beneficiary (if applicable); the terms of arrangements, giving consideration to both explicit arrangements and implicit variable interests, if any, that could require the entity to provide financial support to the VIE, including events or circumstances that could expose the entity to a loss; the methodology used by the entity for determining whether or not it is the primary beneficiary of the variable interest entity; the significant factors considered and judgments made in determining that the power to direct the activities of a VIE that most significantly impact the VIE's economic performance are shared (as defined); the carrying amounts and classification of assets and liabilities of the VIE included in the statement of financial position; the entity's maximum exposure to loss, if any, as a result of its involvement with the VIE, including how the maximum exposure is determined and significant sources of the entity's exposure to the VIE; a comparison of the carrying amounts of the assets and liabilities and the entity's maximum exposure to loss; information about any liquidity arrangements, guarantees, and (or) other commitments by third parties that may affect the fair value or risk of the entity's variable interest in the VIE; whether or not the entity has provided financial support or other support (explicitly or implicitly) to the VIE that it was not previously contractually required to provide or whether the entity intends to provide that support, including the type and amount of the support and the primary reasons for providing the support; and supplemental information the entity determines necessary to provide. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481203/810-10-50-3 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 5A -Publisher FASB -URI https://asc.fasb.org/1943274/2147481203/810-10-50-5A Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481203/810-10-50-9 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481203/810-10-50-4 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481203/810-10-50-6 + Details
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