Business Segments (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Sales:
Net Sales	$ 22,767	$ 18,832	$ 16,301
North American Tire [Member]
Sales:
Net Sales	9,859	8,205	6,977
Europe, Middle East and Africa Tire [Member]
Sales:
Net Sales	8,040	6,407	5,801
Latin American Tire [Member]
Sales:
Net Sales	2,472	2,158	1,814
Asia Pacific Tire [Member]
Sales:
Net Sales	$ 2,396	$ 2,062	$ 1,709