Earnings per Share - Basic and Diluted Earnings per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Earnings (loss) per share — basic:
Goodyear net income (loss)	$ (1,721)	$ 46	$ (729)
Weighted average shares outstanding (in shares)	288	287	285
Earnings (loss) per common share — basic (in dollars per share)	$ (5.99)	$ 0.16	$ (2.56)
Earnings (loss) per share — diluted:
Goodyear net income (loss)	$ (1,721)	$ 46	$ (729)
Weighted average shares outstanding (in shares)	288	287	285
Dilutive effect of stock options and other dilutive securities (in shares)	0	1	0
Weighted average shares outstanding — diluted (in dollars per share)	288	288	285
Earnings (loss) per common share — diluted (in dollars per share)	$ (5.99)	$ 0.16	$ (2.56)