Business Segments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Sales:
Net Sales	$ 5,533	$ 5,402
North American Tire [Member]
Sales:
Net Sales	2,497	2,307
Europe, Middle East and Africa Tire [Member]
Sales:
Net Sales	1,938	1,959
Latin American Tire [Member]
Sales:
Net Sales	521	585
Asia Pacific Tire [Member]
Sales:
Net Sales	$ 577	$ 551