RECONCILIATION OF FINANCIAL STATEMENTS TO FORM 5500 - Reconciliation of Net Investment Gain (Details) - EBP 004 - Plan's Interest in Commingled Trust $ in Thousands	12 Months Ended
Dec. 31, 2025 USD ($)
EBP, Reconciliation of Financial Statement to Form 5500 [Line Items]
Net Investment Gain from Plan’s Interest in Commingled Trust per the Financial Statements	$ 368,902
Impact of Reflecting Fully Benefit-Responsive Investment Contracts at Fair Value	8,701
Net Investment Gain from Plan’s Interest in Commingled Trust per the Form 5500	$ 377,603

EBP, Form 5500 Caption, Increase (Decrease) from Gain (Loss) on Investment

No definition available.

Name:	gt_EBPForm5500CaptionIncreaseDecreaseFromGainLossOnInvestment
Namespace Prefix:	gt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

EBP, Reconciliation to Form 5500, Contract Value to Current Value Adjustment, Investment

+ References

No definition available.

+ Details

Name:	gt_EBPReconciliationToForm5500ContractValueToCurrentValueAdjustmentInvestment
Namespace Prefix:	gt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of increase (decrease) in net asset available for benefit from realized and unrealized gain (loss) on investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 962
-SubTopic 325
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478873/962-325-55-17

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4A
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 325
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477783/962-325-50-7

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section 45
-Paragraph 7
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477063/962-205-45-7

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecreaseForGainLossOnInvestment
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478416/962-205-50-1

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500LineItems
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	dei_LegalEntityAxis=gt_EBP004Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_InvestmentTypeAxis=gt_PlansInterestInCommingledTrustMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: