Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net earnings	$ 5,176	$ 5,446	$ 4,585
Currency translation adjustments	(92)	$ (97)	$ (64)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax of ($5), $0, $0	8
Unrealized (loss)/gain on derivative instruments:
Unrealized (loss) arising during period, net of tax of $77, $77, and $42	(140)	$ (137)	$ (75)
Reclassification adjustment for loss/(gain) included in net earnings, net of tax of ($43), ($4), and $9	79	7	(17)
Total unrealized loss on derivative instruments, net of tax	(61)	(130)	(92)
Defined benefit pension plans & other postretirement benefits:
Net actuarial gain/(loss) arising during the period, net of tax of $402, $2,588, and ($3,437)	(732)	(4,612)	6,143
Amortization of actuarial losses included in net periodic pension cost, net of tax of ($570), ($367), and ($849)	1,038	661	1,516
Settlements and curtailments included in net income, net of tax of ($27), ($101), and ($33)	51	180	59
Pension and postretirement benefit/(cost) related to our equity method investments, net of tax ($2), $15, and ($13)	3	(27)	24
Amortization of prior service cost included in net periodic pension cost, net of tax of ($22), ($12), and ($6)	38	21	10
Prior service cost arising during the period, net of tax of ($496), $3, and $41	902	(5)	(74)
Total defined benefit pension plans & other postretirement benefits, net of tax	1,300	(3,782)	7,678
Other comprehensive income/(loss), net of tax	1,155	(4,009)	7,522
Comprehensive (loss)/income related to noncontrolling interests	(3)	10	9
Comprehensive income, net of tax	$ 6,328	$ 1,447	$ 12,116