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Leases (Details 2) - CNY (¥)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Leases
Operating lease cost	¥ 4,902,615,000	¥ 3,377,389,000
Short-term lease cost	1,902,078,000	1,212,899,000
Total	6,804,693,000	4,590,288,000
Cash paid for operating leases	¥ 4,800,707,000	¥ 3,460,898,000
Lease expense			¥ 4,571,036,000

X

- Definition

Amount of lease cost recognized by lessee for lease contract.

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No definition available.

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- Definition

Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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- Definition

Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

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Amount of short-term lease cost, excluding expense for lease with term of one month or less.

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