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Net Sales - Schedule of Disaggregated Revenue (Parenthetical) (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2020 USD ($)
Tire unit sales | Americas |
Revenue Initial Application Period Cumulative Effect Transition [Line Items] |
Gain on one time cash settlement of take-or-pay agreement | $ 34

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- Definition Gain (loss) on one time cash settlement of take-or-pay agreement with customer. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- 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 No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | srt_ProductOrServiceAxis=gt_TireUnitSalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=gt_AmericasSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |