RIGHT-OF-USE ASSETS AND LEASE LIABILITIES - Narratives (Details) - CNY (¥)	Dec. 31, 2021	Dec. 31, 2020
Disclosure of quantitative information about leases for lessee [abstract]
Aggregate carrying value of land use right certificates	¥ 52,884,000	¥ 54,882,000
Aggregate carrying value of land use right certificates not obtained	¥ 1,154,591,000	¥ 1,182,379,000

The aggregate carrying value of ownership certificates of the land use rights that had not been obtained by the Group.

No definition available.

Name:	gsh_AggregateCarryingValueOfLandUseRightCertificatesNotObtained
Namespace Prefix:	gsh_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant