Earnings Per Share - Basic and Diluted Earnings per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended				6 Months Ended		9 Months Ended	12 Months Ended
	Jun. 30, 2025	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2025	Jun. 30, 2024	Sep. 30, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Earnings per share — basic:
Goodyear Net Income (Loss)	$ 254	$ (37)	$ 79	$ (69)	$ 369	$ 10	$ (27)	$ 46	$ (729)	$ 191
Weighted average shares outstanding (in shares)	287		287		287	286
Earnings per common share — basic (in dollars per share)	$ 0.88	$ (0.13)	$ 0.28	$ (0.24)	$ 1.28	$ 0.04	$ (0.09)	$ 0.16	$ (2.56)	$ 0.67
Earnings per share — diluted:
Goodyear net income	$ 254	$ (37)	$ 79	$ (69)	$ 369	$ 10	$ (27)	$ 46	$ (729)	$ 191
Weighted average shares outstanding (in shares)	287		287		287	286
Dilutive effect of stock options and other dilutive securities (in shares)	3		1		3	2
Weighted average shares outstanding — diluted (in shares)	290		288		290	288
Earnings per common share — diluted (in dollars per share)	$ 0.87	$ (0.13)	$ 0.28	$ (0.24)	$ 1.27	$ 0.04	$ (0.09)	$ 0.16	$ (2.56)	$ 0.67