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Taxation (Details 4) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Taxation
Balance at beginning of the Year	¥ 3,674,442	¥ 2,996,294	¥ 1,480,570
Additions	4,393,499	7,635,196	2,755,222
Reversals	(3,779,077)	(6,957,048)	(1,239,498)
Balance at end of the Year	¥ 4,288,864	¥ 3,674,442	¥ 2,996,294

X

- Definition

Represents the amount of addition in the period in the valuation allowance for a specified deferred tax asset.

+ References

No definition available.

+ Details

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Namespace Prefix:	jd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Represents the amount of valuation allowance of a specified deferred tax asset reversed in the period.

+ References

No definition available.

+ Details

Name:	jd_ValuationAllowanceDeferredTaxAssetCurrentYearReversals
Namespace Prefix:	jd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

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