Restructuring and Transaction Costs and Other Expenses (Schedule Of Other Expenses Presented In The Accompanying Consolidated Comprehensive Statements of Earnings) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Other Income And Expenses [Abstract]
Foreign exchange (gain) loss, net	$ 31	$ (49)	$ 81	$ (64)
Asset retirement obligation accretion	14	14	30	31
Other, net	(21)	27	(66)	11
Total	$ 24	$ (8)	$ 45	$ (22)