Business Segments (Details 1) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Rationalizations:
Rationalizations (Note 2)	$ 26	$ 46	$ 41	$ 55
Net (Gains) Losses on Asset Sales:
Net gains on asset sales	(13)	(11)	(17)	(13)
Operating Segments [Member]
Rationalizations:
Rationalizations (Note 2)	26	46	41	55
Corporate [Member]
Net (Gains) Losses on Asset Sales:
Net gains on asset sales	(1)	(2)	(2)	(2)
Segment Asset Sales [Member]
Net (Gains) Losses on Asset Sales:
Net gains on asset sales	(12)	(9)	(15)	(11)
North American Tire [Member]
Rationalizations:
Rationalizations (Note 2)	13	34	19	40
Net (Gains) Losses on Asset Sales:
Net gains on asset sales	(2)	(5)	(4)	(5)
Europe, Middle East and Africa Tire [Member]
Rationalizations:
Rationalizations (Note 2)	5	6	10	7
Net (Gains) Losses on Asset Sales:
Net gains on asset sales	(7)	(1)	(8)	(2)
Latin American Tire [Member]
Rationalizations:
Rationalizations (Note 2)	0	0	2	0
Net (Gains) Losses on Asset Sales:
Net gains on asset sales	(3)	(3)	(3)	(4)
Asia Pacific Tire [Member]
Rationalizations:
Rationalizations (Note 2)	$ 8	$ 6	$ 10	$ 8