Debt Instrument, Notes Sold, Percentage of Principle Amount

No definition available.

Name:	gt_DebtInstrumentNotesSoldPercentageofPrincipleAmount
Namespace Prefix:	gt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt instrument redemption price percentage with equity offerings.

+ References

No definition available.

+ Details

Name:	gt_DebtInstrumentRedemptionPricePercentageWithEquityOfferings
Namespace Prefix:	gt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt instrument, redemption price, potential redemption percentage of principal amount with equity offerings.

+ References

No definition available.

+ Details

Name:	gt_DebtInstrumentRedemptionPricePotentialRedemptionPercentageOfPrincipalAmountWithEquityOfferings
Namespace Prefix:	gt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

+ Details

Name:	us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6036836-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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

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

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

+ Details

Name:	us-gaap_DebtInstrumentMaturityDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph e
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

+ Details

Name:	us-gaap_DebtInstrumentRedemptionPricePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585

+ Details

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

- Details

Name:	us-gaap_DebtInstrumentAxis=gt_EightPointSevenFivePercentNotesDueInTwoThousandTwentyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=gt_FivePointOneTwoFivePercentNotesDueInTwoThousandTwentyThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=gt_ThreePointSevenFivePercentEuroNotesDueInTwoThousandTwentyThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=gt_NinePointFivePercentNotesDueInTwoThousandTwentyFiveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=gt_DebtInstrumentRedemptionPeriodCommencingMay312022Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=gt_DebtInstrumentRedemptionPeriodCommencingMay312023Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=gt_DebtInstrumentRedemptionPeriodCommencingMay312024Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=gt_DebtInstrumentRedemptionPriorToMayThirtyOneTwoThousandTwentyTwoPlusMakeWholePremiumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=gt_FivePercentNotesDueInTwoThousandTwentySixMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=gt_DebtInstrumentRedemptionPeriodCommencingMayThirtyOneTwoThousandTwentyOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=gt_DebtInstrumentRedemptionPriorToMayThirtyOneTwoThousandTwentyOnePlusMakeWholePremiumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=gt_FourPointEightSevenFivePercentNotesDueInTwoThousandTwentySevenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=gt_DebtInstrumentRedemptionPriorToDecemberFifteenTwoThousandTwentySixMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=gt_DebtInstrumentRedemptionAfterDecemberFifteenTwoThousandTwentySixMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=gt_SevenPercentNotesDueInTwoThousandTwentyEightMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=gt_DebtInstrumentRedemptionAtanytimeplusMakeWholePremiumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Financing Arrangements and Derivative Financial Instruments - Notes Narrative (Details)			12 Months Ended
	Aug. 17, 2020 USD ($)	May 18, 2020 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2020 EUR (€)	Aug. 16, 2020 USD ($)	May 22, 2020 USD ($)
Debt Instrument [Line Items]
Long-term debt, before deferred financing fees			$ 5,366,000,000	$ 5,094,000,000
Repayments of long-term debt			6,059,000,000	6,008,000,000	$ 6,469,000,000
8.75% Due 2020 \| Senior Notes
Debt Instrument [Line Items]
Long-term debt, before deferred financing fees			$ 0	$ 280,000,000			$ 282,000,000
Interest rate, stated percentage			8.75%	8.75%		8.75%	8.75%
Repayments of long-term debt	$ 282,000,000
5.125% due 2023 \| Senior Notes
Debt Instrument [Line Items]
Long-term debt, before deferred financing fees			$ 1,000,000,000	$ 1,000,000,000
Interest rate, stated percentage			5.125%	5.125%		5.125%
Debt instrument, principal amount			$ 1,000,000,000.0
Notes sold, percentage of principle amount			100.00%			100.00%
Debt instrument, maturity date			Nov. 15, 2023
Debt instrument, redemption price			100.00%
3.75% Euro Notes due 2023 \| Senior Notes
Debt Instrument [Line Items]
Interest rate, stated percentage			3.75%			3.75%
Debt instrument, principal amount \| €						€ 250,000,000
Notes sold, percentage of principle amount			100.00%			100.00%
Debt instrument, maturity date			Dec. 15, 2023
Debt instrument, redemption price			100.00%
9.5% due 2025 \| Senior Notes
Debt Instrument [Line Items]
Long-term debt, before deferred financing fees			$ 803,000,000	$ 0
Interest rate, stated percentage		9.50%	9.50%	9.50%		9.50%
Debt instrument, principal amount		$ 600,000,000	$ 800,000,000					$ 200,000,000
Notes sold, percentage of principle amount		100.00%						101.75%
Debt instrument, maturity date		May 31, 2025
Effective yield								9.056%
Debt redemption, potential percentage of principal amount from equity offerings			35.00%
Debt redemption, redemption price from equity offerings			109.50%
9.5% due 2025 \| Senior Notes \| Period Commencing May 31, 2022
Debt Instrument [Line Items]
Debt instrument, redemption price			104.75%
9.5% due 2025 \| Senior Notes \| Period Commencing May 31, 2023
Debt Instrument [Line Items]
Debt instrument, redemption price			102.375%
9.5% due 2025 \| Senior Notes \| Period Commencing May 31, 2024
Debt Instrument [Line Items]
Debt instrument, redemption price			100.00%
9.5% due 2025 \| Senior Notes \| Period Prior to May 31, 2022
Debt Instrument [Line Items]
Debt instrument, redemption price			100.00%
5% due 2026 \| Period Commencing May 31, 2022
Debt Instrument [Line Items]
Debt instrument, redemption price			101.667%
5% due 2026 \| Senior Notes
Debt Instrument [Line Items]
Long-term debt, before deferred financing fees			$ 900,000,000	$ 900,000,000
Interest rate, stated percentage			5.00%	5.00%		5.00%
Debt instrument, principal amount			$ 900,000,000
Notes sold, percentage of principle amount			100.00%			100.00%
Debt instrument, maturity date			May 31, 2026
5% due 2026 \| Senior Notes \| Period Commencing May 31, 2023
Debt Instrument [Line Items]
Debt instrument, redemption price			100.833%
5% due 2026 \| Senior Notes \| Period Commencing May 31, 2024
Debt Instrument [Line Items]
Debt instrument, redemption price			100.00%
5% due 2026 \| Senior Notes \| Period Commencing May 31, 2021
Debt Instrument [Line Items]
Debt instrument, redemption price			102.50%
5% due 2026 \| Senior Notes \| Period Prior to May 31, 2021
Debt Instrument [Line Items]
Debt instrument, redemption price			100.00%
4.875% due 2027 \| Senior Notes
Debt Instrument [Line Items]
Long-term debt, before deferred financing fees			$ 700,000,000	$ 700,000,000
Interest rate, stated percentage			4.875%	4.875%		4.875%
Debt instrument, principal amount			$ 700,000,000
Notes sold, percentage of principle amount			100.00%			100.00%
Debt instrument, maturity date			Mar. 15, 2027
Basis spread			0.50%
4.875% due 2027 \| Senior Notes \| Debt Instrument, Redemption, Prior to December 15, 2026
Debt Instrument [Line Items]
Debt instrument, redemption price			100.00%
4.875% due 2027 \| Senior Notes \| Debt Instrument, Redemption, After December 15, 2026
Debt Instrument [Line Items]
Debt instrument, redemption price			100.00%
7% due 2028 \| Senior Notes
Debt Instrument [Line Items]
Long-term debt, before deferred financing fees			$ 150,000,000	$ 150,000,000
Interest rate, stated percentage			7.00%	7.00%		7.00%
Debt instrument, principal amount			$ 150,000,000
Debt instrument, maturity date			Mar. 15, 2028
Basis spread			0.15%
7% due 2028 \| Senior Notes \| Debt Instrument, Redemption, Prior to December 15, 2026
Debt Instrument [Line Items]
Debt instrument, redemption price			100.00%