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Contract Liabilities (Details) - CNY (¥) ¥ in Billions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Contract Liabilities
Amount of revenues recognized included in the contract liabilities	¥ 13.2	¥ 12.0
Transaction price allocated to unsatisfied performance obligations	16.0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Contract Liabilities
Performance obligation recognized as revenue	¥ 15.3
Expected timing of performance obligation recognized as revenue (in months)	12 months

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- Definition

Amount of revenue recognized arising from contract liability from change in timeframe for performance obligation to be satisfied.

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- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

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Period in which remaining performance obligation is expected to be recognized as revenue, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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