Financial Instruments (Economic Hedges) (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Economic Hedges [Member] | Forecasted Transactions [Member] | Interest Expense [Member]
Gain / (Loss) Recognized in Earnings	$ 4		$ 5	$ (17)
Economic Hedges [Member] | Interest Expense [Member] | Intercompany Loans [Member] | Forecasted Interest Payments [Member]
Gain / (Loss) Recognized in Earnings	(34)	17	(38)	23
Economic Hedges [Member] | Interest Expense [Member] | Interest Rate Contracts [Member]
Gain / (Loss) Recognized in Earnings	1	(4)	(1)	5
Economic Hedges [Member] | Interest Expense [Member] | Cadbury Acquisition Related [Member]
Gain / (Loss) Recognized in Earnings				(395)
Economic Hedges [Member] | Forecasted Transactions [Member] | Cost Of Sales [Member]
Gain / (Loss) Recognized in Earnings	(7)	1	(6)	2
Economic Hedges [Member] | Cost Of Sales [Member] | Commodity Contracts [Member]
Gain / (Loss) Recognized in Earnings	108	35	155	11
Economic Hedges [Member]
Gain / (Loss) Recognized in Earnings	72	49	115	(371)
Interest Rate Contracts [Member]
Gain / (Loss) Recognized in Earnings			$ (3)	$ 3