LOANS AND BORROWINGS - Long-term borrowings secured (Details) - CNY (¥) ¥ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Loans and Borrowings
Assets to secure long-term loans and borrowings	¥ 5,791,388	¥ 4,939,011
Weighted average interest rates of long-term borrowings	5.53%	6.73%
Accounts receivable
Loans and Borrowings
Assets to secure long-term loans and borrowings	¥ 974,536	¥ 743,031
Property and equipment, net
Loans and Borrowings
Assets to secure long-term loans and borrowings	2,629,904	2,918,670
Prepaid land use rights, net
Loans and Borrowings
Assets to secure long-term loans and borrowings	634,953	678,190
Operating lease ROU assets
Loans and Borrowings
Assets to secure long-term loans and borrowings	1,537,304	599,120
Other non-current assets
Loans and Borrowings
Assets to secure long-term loans and borrowings	14,691
VIEs \| Borrowings guaranteed by GDS Holdings Limited
Loans and Borrowings
Secured long-term borrowings	1,060,250	1,348,355
VIEs \| Accounts receivable
Loans and Borrowings
Assets pledged	70,945	66,969
VIEs \| Property and equipment, net
Loans and Borrowings
Assets pledged	46,007	102,248
VIEs \| Other non-current assets
Loans and Borrowings
Assets pledged	¥ 14,691	¥ 0

Amount of assets pledged to secure a long-term debt instrument.

No definition available.

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Data Type:	xbrli:monetaryItemType
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- Definition

Amount of assets pledged to secure a debt instrument.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=123599511&loc=d3e64711-112823

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Weighted average interest rate of long-term debt outstanding calculated at point in time.

+ References

No definition available.

+ Details

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- Definition

Carrying amount of collateralized debt obligations with maturities initially due after one year or beyond the operating cycle, if longer, excluding the current portion. Obligations include, but not limited to, mortgage loans, chattel loans, and other borrowings secured by assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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