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COMMITMENTS AND CONTINGENCIES (Details) € in Millions, ¥ in Millions	1 Months Ended
	Jan. 31, 2021 EUR (€)	Dec. 31, 2020 CNY (¥)	Dec. 31, 2018 EUR (€)
Loss Contingencies [Line Items]
Purchase commitments expected to be incurred within one year related to leasehold improvements and installation of equipment for hotel operations | ¥		¥ 360
Accrued contingencies | ¥		¥ 60
First payment made | €	€ 3
Maximum
Loss Contingencies [Line Items]
Commitment to purchase ordinary shares | €			€ 12

X

- Definition

Amount of cash outflow to acquire ordinary shares.

+ References

No definition available.

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X

- Definition

Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

+ References

No definition available.

+ Details

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X

- 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

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X

- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349

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X

- Definition

Amount of purchase arrangement to be paid in next fiscal year following current fiscal year. Includes, but is not limited to, recorded and unrecorded purchase obligations, long-term purchase commitment, and short-term purchase commitment. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

No definition available.

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X

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