Other Comprehensive Earnings (Components Of Other Comprehensive Earnings) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Foreign currency translation:
Beginning accumulated foreign currency translation		$ 424	$ 983
Change in cumulative translation adjustment		51	(337)
Income tax benefit (expense)		(28)	35
Ending accumulated foreign currency translation		447	681
Pension and postretirement benefit plans:
Beginning accumulated pension and postretirement benefits		(194)	(204)
Recognition of net actuarial loss and prior service cost in earnings	[1]	6	6
Income tax expense		(2)	(2)
Ending accumulated pension and postretirement benefits		(190)	(200)
Accumulated other comprehensive earnings, net of tax		$ 257	$ 481	$ 230

[1] These accumulated other comprehensive earnings components are included in the computation of net periodic benefit cost, which is a component of G&A on the accompanying consolidated comprehensive statements of earnings. See Note 16 for additional details.