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Bank borrowings- Maturity schedule (Details) ¥ in Millions, $ in Millions | Sep. 30, 2020 CNY (¥) | Sep. 30, 2020 USD ($) | Mar. 31, 2020 CNY (¥)
--- | --- | --- | ---
Long-term Debt, Fiscal Year Maturity [Abstract] |  |  |
Within 1 year | ¥ 4,903 | $ 722 | ¥ 5,154
Bank borrowings |  |  |
Long-term Debt, Fiscal Year Maturity [Abstract] |  |  |
Within 1 year | 4,903 |  |
Between 1 to 2 years | 1,856 |  |
Between 2 to 3 years | 705 |  |
Between 3 to 4 years | 29,027 |  |
Between 4 to 5 years | 2,773 |  |
Beyond 5 years | 5,160 |  |
Total borrowings | ¥ 44,424 |  |

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- Definition Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04.(a)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
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