Finance Costs - Summary of Finance Costs (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Analysis of income and expense [abstract]
Interest for lease liabilities	¥ 2,806	¥ 3,052
Interest paid for short-term deposits received (note 37(a))	170	187	¥ 142
Others	20	7	2
Finance costs	¥ 2,996	¥ 3,246	¥ 144

Interest on short-term bank deposits received.

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The amount of costs associated with financing activities of the entity.

+ References

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The amount of interest expense on lease liabilities. [Refer: Lease liabilities]

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The amount of finance costs that the entity does not separately disclose in the same statement or note. [Refer: Finance costs]

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