XML 80 R67.htm IDEA: XBRL DOCUMENT v3.20.1

LONG-TERM INVESTMENTS (Details) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2015
Long-term investments
Equity securities without a readily determinable fair value	¥ 140	¥ 11,140
Impairment on long-term investments	11,000	0	¥ 0
Xixi
Long-term investments
Equity securities without a readily determinable fair value		11,000
Percentage of equity interest					5.21%
Cash consideration					¥ 11,000
Longyan Huiyuan
Long-term investments
Equity securities without a readily determinable fair value	¥ 140	¥ 140
Percentage of equity interest				1.00%
Cash consideration				¥ 140

X

- Definition

Amount of investment in equity security without readily determinable fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=116654751&loc=SL75117539-209714

+ Details

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

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

No definition available.

+ Details

Name:	us-gaap_EquitySecuritiesWithoutReadilyDeterminableFairValueLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 8A
-URI http://asc.fasb.org/extlink&oid=118954083&loc=SL6284422-111562

+ Details

Name:	us-gaap_ImpairmentOfInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

This element represents the aggregate cost of investments accounted under investment in equity security without readily determinable fair value.

+ References

No definition available.

+ Details

Name:	yi_EquitySecuritiesWithoutReadilyDeterminableFairValueAggregateCost
Namespace Prefix:	yi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under investment in equity security without readily determinable fair value.

+ References

No definition available.

+ Details

Name:	yi_EquitySecuritiesWithoutReadilyDeterminableFairValueOwnershipPercentage
Namespace Prefix:	yi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=yi_XixiMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=yi_LongyanHuiyuanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: