CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) ¥ in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2025 CNY (¥)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 CNY (¥)	Dec. 31, 2023 CNY (¥)
Supplemental disclosure of cash flow information
Income taxes paid	¥ 2,641,706	$ 377,759	¥ 2,397,186	¥ 1,671,712
Interest expense paid	260,920	37,311	295,623	249,060
Supplemental disclosure on non-cash information
Cash dividends declared in payables	6,118	875	12,543	7
Purchase of property and equipment included in payables	1,383,111	259,743	1,197,863	1,397,015
Purchase of property and equipment using prepayments recorded in other non-current assets	58,205	8,323	4,571	20,930
Purchase of land use rights using prepayments recorded in other non-current assets	¥ 37,830	$ 5,410	99,988	¥ 254,335
Reclassification of loan from non-controlling interest shareholders to non-controlling interest			¥ 45,216

No definition available.

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

- Definition

Amount, before refund, of cash paid to foreign, federal, state, and local jurisdictions as income tax.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-2A

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 23
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-23

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-22

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 25
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-25

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-2

+ Details

Name:	us-gaap_IncomeTaxesPaid
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 17
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-17

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 25
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-25

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-2

+ Details

Name:	us-gaap_InterestPaidNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- References

No definition available.

+ Details

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

- Definition

The amount of cash dividends declared in payables in noncash investing or financing activities.

+ References

No definition available.

+ Details

Name:	zto_CashDividendsDeclaredInPayables
Namespace Prefix:	zto_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of purchase of land use rights from other non-current assets in noncash investing or financing activities.

+ References

No definition available.

+ Details

Name:	zto_PurchaseOfLandUseRightsFromOtherNonCurrentAssets
Namespace Prefix:	zto_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of purchase of property and equipment from other non-current assets in noncash investing or financing activities.

+ References

No definition available.

+ Details

Name:	zto_PurchaseOfPropertyAndEquipmentFromOtherNonCurrentAssets
Namespace Prefix:	zto_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of purchase of property and equipment included in payables in noncash investing or financing activities.

+ References

No definition available.

+ Details

Name:	zto_PurchaseOfPropertyAndEquipmentIncludedInPayables
Namespace Prefix:	zto_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of reclassification of loan from non-controlling interest shareholders to non-controlling interest.

+ References

No definition available.

+ Details

Name:	zto_ReclassificationOfLoanFromNonControllingInterestShareholdersToNonControllingInterest
Namespace Prefix:	zto_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration