Derivative Instruments and Hedging Activities (Pre-Tax Gains (Losses) On Derivatives Designated As Hedging Instruments) (Details) (Designated As Hedging Instrument [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Derivative [Line Items]
Total amount recognized in earnings	$ (45)	$ (40)
Interest Expense [Member]
Derivative [Line Items]
Interest contracts effective amount recognized in earnings	0	0
Net Sales And Other Operating Income [Member]
Derivative [Line Items]
Commodity Contracts effective amount recognized in earnings	(1)	(10)
Cost Of Products Sold [Member]
Derivative [Line Items]
Commodity Contracts effective amount recognized in earnings	(2)	(3)
Commodity contracts ineffective amount recognized in earnings	(42)	(27)
Other Income (Expense) - Net [Member]
Derivative [Line Items]
FX Contracts effective amount recognized in earnings	$ 0	$ 0