Business Segments (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Sales:
Net Sales	$ 5,620	$ 4,528	$ 11,022	$ 8,798
North American Tire [Member]
Sales:
Net Sales	2,411	2,049	4,718	3,828
Europe, Middle East and Africa Tire [Member]
Sales:
Net Sales	1,943	1,455	3,902	2,984
Latin American Tire [Member]
Sales:
Net Sales	640	529	1,225	1,007
Asia Pacific Tire [Member]
Sales:
Net Sales	$ 626	$ 495	$ 1,177	$ 979