Sale of Farm Tire and Wire Business (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended				3 Months Ended	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011 Farm LAT Member	Dec. 31, 2010 Farm LAT Member	Sep. 30, 2011 Wire [Member]	Dec. 31, 2011 Wire [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale			$ 99			$ 50
Pre-tax gain on sale			6		1
Income tax withheld from sales proceeds			5
Assets Held For Sale, Net				33
Property, plant and equipment				44
Inventories				16
Date of the transaction completed			April 1, 2011			July 1, 2011
Deferred income				14
Compensation and benefits				10
Deferred income taxes		5
Impairment of Long-Lived Assets Held-for-use	$ 0	$ 0