Investments In And Advances To Affiliates (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($) entity facility	Dec. 31, 2014 entity
Schedule Of Equity Method Investments [Line Items]
Amount of credit facility provided to unconsolidated affiliates	$ 90
Number of unconsolidated affiliates provided with credit facilities by the entity | entity	4
Number of credit facilities with outstanding balance | facility	3
Outstanding balance of credit facilities	$ 27
Investments In Affiliates [Member]
Schedule Of Equity Method Investments [Line Items]
Number of unconsolidated affiliates | entity	58	60
Undistributed earnings of unconsolidated affiliates	$ 1,900
Wilmar International Limited [Member]
Schedule Of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	19.00%	17.30%
Foreign Affiliate Traded on an Active Market [Member]
Schedule Of Equity Method Investments [Line Items]
Carrying value of direct investments	$ 2,600
Market value of direct investments	$ 2,500
Almex [Member]
Schedule Of Equity Method Investments [Line Items]
Number of credit facilities with no outstanding balance | facility	1
Outstanding balance of credit facilities	$ 0
Minimum [Member]
Schedule Of Equity Method Investments [Line Items]
Credit facility, basis spread on floating interest rate	2.67%
Maximum [Member]
Schedule Of Equity Method Investments [Line Items]
Credit facility, basis spread on floating interest rate	3.17%