Derivative Instruments and Hedging Activities (Pre-Tax Gains (Losses) On Derivatives Not Designated As Hedging Instruments) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Derivative [Line Items]
Total gain (loss) recognized in earnings	$ 594	$ 109
Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
Total gain (loss) recognized in earnings			143	283
Interest Expense [Member]
Derivative [Line Items]
Interest Contracts	0	0	0	0
Other Income (Expense) - Net [Member]
Derivative [Line Items]
Interest Contracts	0	1	0	1
FX Contracts	(148)	85	(172)	30
Revenues [Member]
Derivative [Line Items]
FX Contracts	5	(3)	(3)	106
Cost Of Products Sold [Member]
Derivative [Line Items]
FX Contracts	17	29	105	(58)
Commodity Contracts	$ 720	$ (3)	$ 213	$ 204