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Other (Income) Expense - Narrative (Details) $ in Millions | 3 Months Ended
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Mar. 31, 2021 USD ($)
Other Income And Expenses [Abstract] |
Net foreign currency exchange (gains) losses include expense related to out of period adjustment | $ 7

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- Definition Net foreign currency exchange (gains) losses include expense related to out of period adjustments. + References No definition available. + Details
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Namespace Prefix: | gt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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