Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net earnings	$ 1,704	$ 1,362	$ 4,150	$ 3,980
Currency translation adjustments	(35)	(72)	(79)	(34)
Unrealized gain/(loss) on certain investments, net of tax ($2), $1, ($5), and ($1)	1	(1)	5	2
Unrealized (loss)/gain on derivative instruments [Abstract]
Unrealized loss arising during period, net of tax of $41, $50, $78, and $36	(73)	(89)	(139)	(64)
Reclassification adjustment for gains/(losses) included in net earnings, net of tax of ($12), $1, ($28), and $1	24	(3)	52	(2)
Total unrealized loss on derivative instruments, net of tax	(49)	(92)	(87)	(66)
Defined benefit pension plans & other postretirement benefits [Abstract]
Amortization of prior service cost included in net periodic pension cost, net of tax of ($5), ($3), ($16), and ($9)	10	5	29	16
Net actuarial gain/(loss) arising during the period, net of tax of $15, ($1), ($2), and ($348)	(27)	1	4	623
Amortization of actuarial losses included in net periodic pension cost, net of tax of ($143), ($90), ($425), and ($275)	$ 257	$ 165	765	498
Settlements and curtailments included in net income, net of tax of $0, $0, ($2), and ($113)			3	202
Total defined benefit pension plans and other postretirement benefits, net of tax	$ 240	$ 171	801	1,339
Other comprehensive income, net of tax	157	6	640	1,241
Comprehensive (loss)/income related to noncontrolling interests	(1)	3	(2)	9
Comprehensive income, net of tax	$ 1,860	$ 1,371	$ 4,788	$ 5,230