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Land use rights, net (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017 CNY (¥)	Dec. 31, 2016 CNY (¥)	Dec. 31, 2015 CNY (¥)	Dec. 31, 2017 USD ($)	Dec. 31, 2017 CNY (¥)
Land use rights, net
Land use rights		¥ 2,567,271			¥ 7,254,974
Less: Accumulated amortization		(119,760)			(204,165)
Net book value		2,447,511		$ 1,083,690	7,050,809
Amortization expenses	¥ 84,405	¥ 48,528	¥ 30,360
Amortization expenses related to the land use rights for future periods
2018					146,238
2019					146,238
2020					146,238
2021					146,238
2022					146,238
2023 and thereafter					¥ 6,319,619

X

- Definition

The aggregate expense charged against earnings to allocate the cost of land use rights in a systematic and rational manner to the periods expected to benefit from such assets.

+ References

No definition available.

+ Details

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

X

- Definition

The net carrying amount as of the balance sheet date of land use right.

+ References

No definition available.

+ Details

Name:	jd_LandUseRights
Namespace Prefix:	jd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Accumulated amount of amortization of land use rights.

+ References

No definition available.

+ Details

Name:	jd_LandUseRightsAccumulatedAmortization
Namespace Prefix:	jd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of amortization expense for land use rights expected to be recognized after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

+ Details

Name:	jd_LandUseRightsAmortizationExpenseAfterYearFive
Namespace Prefix:	jd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of amortization expense for land use rights expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

+ Details

Name:	jd_LandUseRightsAmortizationExpenseNextTwelveMonths
Namespace Prefix:	jd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of amortization expense for land use rights expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

+ Details

Name:	jd_LandUseRightsAmortizationExpenseYearFive
Namespace Prefix:	jd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of amortization expense for land use rights expected to be recognized during the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

+ Details

Name:	jd_LandUseRightsAmortizationExpenseYearFour
Namespace Prefix:	jd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of amortization expense for land use rights expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

+ Details

Name:	jd_LandUseRightsAmortizationExpenseYearThree
Namespace Prefix:	jd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of amortization expense for land use rights expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

+ Details

Name:	jd_LandUseRightsAmortizationExpenseYearTwo
Namespace Prefix:	jd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

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Namespace Prefix:	jd_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount before amortization of land use rights.

+ References

No definition available.

+ Details

Name:	jd_LandUseRightsGross
Namespace Prefix:	jd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	jd_LandUseRightsNetAmortizationExpenseFiscalYearMaturityAbstract
Namespace Prefix:	jd_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration