Derivative Instruments and Hedging Activities (Pre-Tax Gains (Losses) On Derivatives Not Designated As Hedging Instruments) (Details) (Not Designated As Hedging Instrument [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Derivative [Line Items]
Total gain (loss) recognized in earnings	$ 95	$ (52)
Interest Expense [Member]
Derivative [Line Items]
Interest Contracts	0	0
Net Sales And Other Operating Income [Member]
Derivative [Line Items]
FX Contracts	73	9
Cost Of Products Sold [Member]
Derivative [Line Items]
FX Contracts	(1)	30
Commodity Contracts	68	(232)
Other Income (Expense) - Net [Member]
Derivative [Line Items]
Interest Contracts	0
FX Contracts	$ (45)	$ 141