Derivative Instruments and Hedging Activities (Pre-Tax Gains (Losses) On Derivatives Not Designated As Hedging Instruments) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended		12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2012	Jun. 30, 2011
Derivative [Line Items]
Other Contracts		$ 0
Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
Total gain (loss) recognized in earnings	368	(156)	314	(163)	(687)	(1,094)
Interest Expense [Member] | Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
Interest Contracts	0	0	0	0	0	0
Revenues [Member] | Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
FX Contracts	129	33	108	213	117	(14)
Cost Of Products Sold [Member] | Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
FX Contracts	(49)	(116)	(157)	(188)	(255)	150
Commodity Contracts	136	(4)	301	(387)	(527)	(1,303)
Other Income (Expense) - Net [Member] | Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
Interest Contracts			1	0		30
FX Contracts	94	(69)	61	142	(21)	43
Other Contracts	$ 58		$ 0	$ 57	$ (1)	$ 0