Condensed Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Statement of Other Comprehensive Income [Abstract]
Net earnings	$ 1,088	$ 967	$ 2,194	$ 1,890
Currency translation adjustments	(65)	(55)	(88)	(10)
Unrealized (loss)/gain on derivative instruments [Abstract]
Unrealized loss arising during period, net of tax of $36, $18, $51 and $7	(63)	(30)	(89)	(12)
Reclassification adjustment for (gain)/loss included in net earnings, net of tax of $4, ($5), $3 and ($5)	(5)	8	(3)	8
Total unrealized gain/(loss) on derivative instruments, net of tax	(68)	(22)	(92)	(4)
Defined benefit pension plans & other postretirement benefits [Abstract]
Amortization of prior service cost included in net periodic pension cost, net of tax of ($2), ($3), ($3) and ($6)	2	4	5	8
Net actuarial gain arising during the period, net of tax of $0, ($15), ($16) and ($24)		27	30	43
Amortization of actuarial losses included in net periodic pension cost, net of tax of ($216), ($187), ($431) and ($375)	377	327	755	653
Settlements and curtailments included in net income, net of tax of $0, ($1), ($5) and ($3)		2	9	5
Pension and post retirement benefits related to our equity method investments, net of tax $0, $2, ($1) and $6	1	(5)	3	(11)
Total defined benefit pension plans & other postretirement benefits, net of tax	380	355	802	698
Other comprehensive loss, net of tax	247	278	622	684
Comprehensive income/(loss) related to non-controlling interest	19	1	21	1
Comprehensive income, net of tax	$ 1,354	$ 1,246	$ 2,837	$ 2,575