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Investments in equity method investees - Others (Details) ¥ in Millions, $ in Millions	Sep. 30, 2020 CNY (¥)	Sep. 30, 2020 USD ($)	Mar. 31, 2020 CNY (¥)
Investments in equity investees
Carrying value as equity method investment	¥ 209,449	$ 30,848	¥ 189,632
Equity method investments, publicly traded
Investments in equity investees
Carrying value as equity method investment	64,554
Market values of equity method investments	¥ 72,988

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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This item represents the aggregate value of each identified investment accounted for under the equity method of accounting based on the quoted market price for those investments in common stock for which a quoted market price is available.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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