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Gain on sale of development properties (Details) $ in Thousands		12 Months Ended
	Feb. 27, 2019 CNY (¥)	Dec. 31, 2020 USD ($)	Dec. 31, 2020 CNY (¥)	Dec. 31, 2019 CNY (¥)	Dec. 31, 2020 CNY (¥)	Feb. 28, 2019 CNY (¥)
Gain on sale of development properties [Line Items]
Total gross asset value to be disposed to Core Fund	¥ 11,000,000,000
Gain on sale of development properties		$ 252,682	¥ 1,648,747,000	¥ 3,884,709,000
The initial annual rent under the lease agreements	¥ 700,000,000
Percentage of lease and rent expense increase annually	3.00%
Rental rate adjusted with growth rate of fair market rent	5 years
Disposal group discontinued operations cash and cash equivalents		$ 17,765			¥ 115,918,000
Core Fund And Core Fund Two
Gain on sale of development properties [Line Items]
Disposal group discontinued operations cash and cash equivalents					¥ 115,918,000
Modern Logistics Facilities | Core Fund And Core Fund Two
Gain on sale of development properties [Line Items]
Gain on sale of development properties			985,890,000
Core Fund II
Gain on sale of development properties [Line Items]
Committed percentage of the total capital (as a percent)		10.00%			10.00%
Core Fund II | Modern Logistics Facilities
Gain on sale of development properties [Line Items]
Total gross asset value to be disposed to Core Fund					¥ 5,000,000,000
Logistics Investment Development Fund One
Gain on sale of development properties [Line Items]
Gain on sale of development properties			468,002,000
Committed percentage of the total capital (as a percent)		40.00%			40.00%
Minimum
Gain on sale of development properties [Line Items]
Lease term	5 years
Maximum
Gain on sale of development properties [Line Items]
Lease term	6 years
Core Fund
Gain on sale of development properties [Line Items]
Gain on sale of development properties			¥ 194,855,000	¥ 3,801,492,000
Total committed capital						¥ 4,800,000,000
Core Fund | General partner
Gain on sale of development properties [Line Items]
Committed percentage of the total capital (as a percent)						20.00%
Core Fund | GIC
Gain on sale of development properties [Line Items]
Committed percentage of the total capital (as a percent)						80.00%
GIC | Core Fund II
Gain on sale of development properties [Line Items]
Committed percentage of the total capital (as a percent)		90.00%			90.00%
GIC And Mubdala Investment Company | Logistics Investment Development Fund One
Gain on sale of development properties [Line Items]
Committed percentage of the total capital (as a percent)		60.00%			60.00%

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Amount of assets held-for-sale that are not part of a disposal group.

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The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

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Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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