SEGMENT REPORTING (Schedule of Total long-lived assets excluding financial instruments, intangible assets, long-term investment and goodwill by country) (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2021 CNY (¥)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 CNY (¥)
Segment reporting [Line Items]
Total long-lived assets other than financial instruments, intangible assets and deferred tax assets	¥ 3,989,426	$ 626,028	¥ 3,474,849
CHINA
Segment reporting [Line Items]
Total long-lived assets other than financial instruments, intangible assets and deferred tax assets	¥ 3,989,426	$ 626,028	¥ 3,474,849

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599

Name:	us-gaap_NoncurrentAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant