Condensed Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Statement of Comprehensive Income [Abstract]
Net earnings	$ 965	$ 1,106
Currency translation adjustments	17	(23)
Unrealized gain on certain investments, net of tax of ($1) and $0	2
Unrealized (loss)/gain on derivative instruments [Abstract]
Unrealized loss arising during period, net of tax of $6 and $15	(11)	(26)
Reclassification adjustment for losses included in net earnings, net of tax of ($3) and ($1)	5	2
Total unrealized loss on derivative instruments, net of tax	(6)	(24)
Defined benefit pension plans & other postretirement benefits [Abstract]
Amortization of prior service cost included in net periodic pension cost, net of tax of ($3) and ($1)	6	3
Net actuarial gain arising during the period, net of tax of ($346) and ($16)	620	30
Amortization of actuarial losses included in net periodic pension cost, net of tax of ($94) and ($215)	169	378
Settlements and curtailments included in net income, net of tax of ($113) and ($5)	203	9
Pension and postretirement benefit related to our equity method investments, net of tax $0 and ($1)		2
Total defined benefit pension plans and other postretirement benefits, net of tax	998	422
Other comprehensive income, net of tax	1,011	375
Comprehensive income related to noncontrolling interest	3	2
Comprehensive income, net of tax	$ 1,979	$ 1,483