XML 64 R53.htm IDEA: XBRL DOCUMENT v3.20.1

SUMMARY OF PRINCIPAL ACCOUNTING POLICIES - Selling and marketing expenses and Others (Details) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Selling and marketing expenses
Advertising expenses	¥ 30,447	¥ 30,221	¥ 62,749
Government grants
Government grants	¥ 358	¥ 2,166	¥ 3,282
Value added taxes
Minimum percentage value added tax	0.00%
Maximum percentage value added tax	17.00%

X

- Definition

Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 720
-SubTopic 35
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848

+ Details

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

X

- References

No definition available.

+ Details

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

X

- Definition

Represents financial award given by the federal, state or local government, which need not required to be repaid.

+ References

No definition available.

+ Details

Name:	yi_GovernmentGrants
Namespace Prefix:	yi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	yi_GovernmentGrantsAbstract
Namespace Prefix:	yi_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Maximum range of surcharges and value added tax ("VAT").

+ References

No definition available.

+ Details

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

X

- Definition

Minimum range of surcharges and value added tax ("VAT").

+ References

No definition available.

+ Details

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

X

- Definition

Value Added Taxes [Abstract]

+ References

No definition available.

+ Details

Name:	yi_ValueAddedTaxesAbstract
Namespace Prefix:	yi_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration