Restructuring And Transaction Costs (Schedule Of The Components Of Restructuring And Transaction Costs Included In The Consolidated Comprehensive Statements Of Earnings) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2016
Restructuring Cost And Reserve [Line Items]
Restructuring and transaction costs	$ (5)	$ 266
Employee Related Costs [Member] | Reduction of workforce [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring and transaction costs	(7)	229
Lease Obligations [Member] | Reduction of workforce [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring and transaction costs		17
Asset Impairments [Member] | Reduction of workforce [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring and transaction costs		3
Transaction Costs [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring and transaction costs	$ 2	$ 17