Financing Arrangements and Derivative Financial Instruments (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2011
Debt Instrument [Line Items]
Credit arrangements	$ 8,235
Credit Arrangements, Unused	2,207
Total long term debt excluding capital leases	5,311		4,914
Financing Arrangements (Textuals) [Abstract]
Percentage of debt at variable interest rate	44.00%
Average variable interest rate	4.03%
Outstanding foreign currency cash flow derivatives with notional amounts	184		171
Foreign currency derivatives (gain) loss included in other expense	24	35
Outstanding foreign currency derivative instruments not designated as hedging instruments with notional amounts	1,102		1,056
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months	5
Long-term Debt [Member]
Debt Instrument [Line Items]
Credit arrangements	7,619
Credit Arrangements, Unused	1,882
Ten Point Five Percent Notes Due In Two Thousand Sixteen [Member]
Debt Instrument [Line Items]
Total long term debt excluding capital leases	0		631
Short-term Debt [Member]
Debt Instrument [Line Items]
Credit arrangements	616
Credit Arrangements, Unused	325
Global And North American Tire Headquarters Member
Debt Instrument [Line Items]
Total long term debt excluding capital leases	$ 49