Business Segments (Details) (USD $) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Sales:
Net Sales	$ 6,062	$ 4,962	$ 17,084	$ 13,760
North American Tire [Member]
Sales:
Net Sales	2,557	2,176	7,275	6,004
Europe, Middle East and Africa Tire [Member]
Sales:
Net Sales	2,226	1,696	6,128	4,680
Latin American Tire [Member]
Sales:
Net Sales	651	569	1,876	1,576
Asia Pacific Tire [Member]
Sales:
Net Sales	$ 628	$ 521	$ 1,805	$ 1,500