Income Taxes (Deferred Income Tax Assets (Liabilities)) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Income Tax Expense (Benefit) [Abstract]
Accrued expenses	$ 109	$ 103
Pension and other postretirement benefits	87	82
Other	(9)	2
Net current deferred income tax asset	187	187
Net current deferred income tax liability included in accrued expenses	(26)	(28)
Tax credits and loss carryforwards	414	447
Pension, postretiremet and other emplyee benefits	69	153
Other	10	(55)
Valuation allowances	(195)	(233)
Net noncurrent deferred income tax asset included in other assets	298	312
Property, plant and equipment, net	(1,176)	(1,081)
Deferred Tax Liability Noncurrent Pension Postretirement And Other Employee Benefits	514	550
Pension, postretirement and other employee benefits	(514)	(550)
Foreign tax credits and loss carryforwards	(343)	(447)
Installment sales	(118)	(112)
Other	(46)	(173)
Net noncurrent deferred income tax liability	$ (483)	$ (369)