Condensed Consolidating Financial Statements - Condensed Consolidating Statements Of Earnings (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Condensed Consolidating Financial Information [Line Items]
Revenues	$ 31,218	$ 31,513	$ 32,677
Cost of sales	25,454	28,404	26,821
G&A	2,079	2,276	2,030
Operating earnings	3,685	833	3,826
Interest, net	(86)	(156)	(141)
Other, net	8	(136)	33
Earnings from continuing operations before income taxes	3,607	541	3,718
Provision for income taxes	1,121	873	1,166
Discontinued operations, net of tax	(129)	0	(26)
Equity in net earnings of subsidiaries	0	0	0
Net earnings (loss)	2,357	(332)	2,526
Comprehensive income	3,947	(795)	1,650
Parent
Condensed Consolidating Financial Information [Line Items]
Revenues	0	0	0
Cost of sales	20	(20)	(13)
G&A	74	89	90
Operating earnings	(94)	(69)	(77)
Interest, net	(93)	(158)	(143)
Other, net	1	(126)	5
Earnings from continuing operations before income taxes	(186)	(353)	(215)
Provision for income taxes	(56)	(137)	(43)
Discontinued operations, net of tax	(129)		(26)
Equity in net earnings of subsidiaries	2,616	(116)	2,724
Net earnings (loss)	2,357	(332)	2,526
Comprehensive income	3,947	(795)	1,650
Guarantors on a Combined Basis
Condensed Consolidating Financial Information [Line Items]
Revenues	27,272	26,349	26,253
Cost of sales	22,175	23,614	21,336
G&A	1,664	1,618	1,499
Operating earnings	3,433	1,117	3,418
Interest, net	1	(3)	0
Other, net	6	(4)	27
Earnings from continuing operations before income taxes	3,440	1,110	3,445
Provision for income taxes	1,058	854	1,097
Discontinued operations, net of tax	0		0
Equity in net earnings of subsidiaries	0	0	0
Net earnings (loss)	2,382	256	2,348
Comprehensive income	2,820	21	2,228
Other Subsidiaries on a Combined Basis
Condensed Consolidating Financial Information [Line Items]
Revenues	3,946	5,164	6,424
Cost of sales	3,259	4,810	5,498
G&A	341	569	441
Operating earnings	346	(215)	485
Interest, net	6	5	2
Other, net	1	(6)	1
Earnings from continuing operations before income taxes	353	(216)	488
Provision for income taxes	119	156	112
Discontinued operations, net of tax	0		0
Equity in net earnings of subsidiaries	0	0	0
Net earnings (loss)	234	(372)	376
Comprehensive income	191	(90)	183
Consolidating Adjustments
Condensed Consolidating Financial Information [Line Items]
Revenues	0	0	0
Cost of sales	0	0	0
G&A	0	0	0
Operating earnings	0	0	0
Interest, net	0	0	0
Other, net	0	0	0
Earnings from continuing operations before income taxes	0	0	0
Provision for income taxes	0	0	0
Discontinued operations, net of tax	0		0
Equity in net earnings of subsidiaries	(2,616)	116	(2,724)
Net earnings (loss)	(2,616)	116	(2,724)
Comprehensive income	$ (3,011)	$ 69	$ (2,411)