XML 86 R72.htm IDEA: XBRL DOCUMENT
v3.22.1

Leases - Additional Information (Detail) ¥ in Thousands, $ in Thousands | Dec. 31, 2021 CNY (¥) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 CNY (¥)
--- | --- | --- | ---
Operating Lease, Liability | ¥ 2,213,590 | $ 347,361 | ¥ 1,466,472
Operating Lease, Right-of-Use Asset | 2,245,571 | $ 352,379 | ¥ 1,503,222
Regional Processing Centers and Frontline Fulfillment Stations [Member] |  |  |
Operating lease, not yet commenced | 27,800 |  |
Operating Lease, Liability | 22,500 |  |
Operating Lease, Right-of-Use Asset | ¥ 24,200 |  |

X
- Definition Lessee, operating lease, lease not yet commenced,. + References No definition available. + Details
Name: | ddl_LesseeOperatingLeaseLeaseNotYetCommenced
Namespace Prefix: | ddl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
Name: | us-gaap_OperatingLeaseLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
Name: | us-gaap_OperatingLeaseRightOfUseAsset
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | ddl_LeaseContractualAssetAxis=ddl_RegionalProcessingCentersAndFrontlineFulfillmentStationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |