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Income Taxes (Details) € in Millions, $ in Millions	3 Months Ended				6 Months Ended		9 Months Ended	12 Months Ended
	Jun. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2024 EUR (€)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Income Taxes [Line Items]
Income tax expense	$ 24		$ 60		$ 37	$ 66
Income before income taxes	305		$ 133		436	69
Net discrete tax benefit	$ 4				$ 5	$ 1
U.S. statutory rate	21.00%		21.00%		21.00%	21.00%
Corporate alternative minimum tax								15.00%	15.00%
Corporate average revenue excess amount | €									€ 750
Unrecognized tax benefits	$ 0				$ 0
Goodyear net income	254	$ (37)	$ 79	$ (69)	369	$ 10	$ (27)	$ 46		$ (729)	$ 191
Deferred tax asset												$ 315
Revision
Income Taxes [Line Items]
Goodyear net income		$ (3)	$ (6)	$ (12)		$ (18)	$ (21)	(24)		$ (40)	$ (11)	$ 1,500
United States
Income Taxes [Line Items]
Net deferred tax assets, unlimited lives	1,200				1,200			1,100
Net deferred tax assets, limited lives	200				200			200
Deferred tax asset, tax credit carryforwards, foreign								24
State And Local Authority
Income Taxes [Line Items]
Net deferred tax assets	1,400				1,400			1,300
Valuation allowance	36				36			26
Foreign Country
Income Taxes [Line Items]
Net deferred tax assets	1,500				1,500			1,500
Valuation allowance	1,300				1,300			$ 1,200
Foreign Country | Luxembourg
Income Taxes [Line Items]
Valuation allowance	$ 1,000				$ 1,000

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