Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net earnings	$ 1,110	$ 1,653	$ 2,446	$ 2,618
Currency translation adjustments	44	21	(44)	38
Unrealized gain on certain investments, net of tax ($2), ($1), ($3), and ($2)	3	1	4	3
Unrealized (loss)/gain on derivative instruments [Abstract]
Unrealized (loss)/gain arising during period, net of tax of ($14), ($20), $37, and ($14)	25	36	(66)	25
Reclassification adjustment for gains/(losses) included in net earnings, net of tax of ($10), $3, ($16), and $0	16	(4)	28	1
Total unrealized (loss)/gain on derivative instruments, net of tax	41	32	(38)	26
Defined benefit pension plans & other postretirement benefits [Abstract]
Amortization of prior service cost included in net periodic pension cost, net of tax of ($6), ($3), ($11), and ($6)	9	5	19	11
Net actuarial gain arising during the period, net of tax of ($17), ($1), ($17), and ($347)	31	2	31	622
Amortization of actuarial losses included in net periodic pension cost, net of tax of ($145), ($91), ($282), and ($185)	264	164	508	333
Settlements and curtailments included in net income, net of tax of ($2), $0, ($2), and ($113)	3	(1)	3	202
Total defined benefit pension plans and other postretirement benefits, net of tax	307	170	561	1,168
Other comprehensive income, net of tax	$ 395	224	483	1,235
Comprehensive (loss)/income related to noncontrolling interests		3	(1)	6
Comprehensive income, net of tax	$ 1,505	$ 1,880	$ 2,928	$ 3,859