Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net earnings	$ 10,460	$ 8,458	$ 5,034
Currency translation adjustments	(86)	128	(104)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax of ($1), $1, and ($5)	2	1	(2)
Derivative instruments:
Unrealized (loss)/gain arising during period, net of tax of $40, ($66), and $4	(146)	119	(8)
Reclassification adjustment for loss included in net earnings, net of tax of ($8), ($28), and ($43)	30	52	78
Total derivative instruments, net of tax	(116)	171	70
Defined benefit pension plans & other postretirement benefits:
Net actuarial gain/(loss) arising during the period, net of tax of ($105), $248, and $752	384	(495)	(1,365)
Amortization of actuarial losses included in net periodic pension cost, net of tax of ($242), ($272), and ($288)	878	542	524
Settlements and curtailments included in net income, net of tax of ($2), $0, and ($7)	(8)		(14)
Pension and postretirement benefit/(cost) related to our equity method investments, net of tax ($6), $5, and ($7)	22	(11)	12
Amortization of prior service credits included in net periodic pension cost, net of tax of $39, $59, and $31	(143)	(117)	(57)
Prior service cost arising during the period, net of tax of ($94), ($14), and ($18)	341	28	33
Total defined benefit pension plans & other postretirement benefits, net of tax	1,490	(53)	(839)
Other comprehensive income/(loss), net of tax	1,290	247	(875)
Comprehensive loss related to noncontrolling interests	(21)	(2)	(1)
Comprehensive income, net of tax	$ 11,729	$ 8,703	$ 4,158