PREPAID LAND USE RIGHTS (Details) - CNY (¥) ¥ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Prepaid land use rights	¥ 716,492	¥ 736,695
Less: accumulated amortization	(81,539)	(58,505)
Prepaid land use rights, net	634,953	678,190
Amortization of prepaid land use rights	24,961	26,656	¥ 26,393
Asset pledged as security
Prepaid land use rights, net	¥ 634,953	¥ 678,190

Amount of prepaid land use rights which are expected to be consumed after one year or beyond the normal operating cycle before amortization expense if any.

No definition available.

Name:	gds_PrepaidLandUseRightsNoncurrentGross
Namespace Prefix:	gds_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant