Condensed Consolidating Statements Of Earnings (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jul. 01, 2012	Jun. 30, 2013	Jul. 01, 2012
Condensed Consolidating Financial Information [Line Items]
Revenues	$ 7,911	$ 7,922	$ 15,315	$ 15,501
Cost of sales	6,427	6,427	12,477	12,611
General and administrative expenses	524	525	1,031	1,060
Operating earnings	960	970	1,807	1,830
Interest, net	(18)	(37)	(41)	(76)
Other, net	1	(5)	1	(5)
Earnings before income taxes	943	928	1,767	1,749
Provision for income taxes	303	294	556	551
Equity in net earnings of subsidiaries	0	0	0	0
Net earnings	640	634	1,211	1,198
Comprehensive income	645	444	1,097	1,208
Parent Company [Member]
Condensed Consolidating Financial Information [Line Items]
Revenues	0	0	0	0
Cost of sales	3	(4)	6	(9)
General and administrative expenses	19	22	39	44
Operating earnings	(22)	(18)	(45)	(35)
Interest, net	(23)	(40)	(46)	(80)
Other, net	(1)	(1)	(1)	(2)
Earnings before income taxes	(46)	(59)	(92)	(117)
Provision for income taxes	(11)	(44)	(20)	(62)
Equity in net earnings of subsidiaries	675	649	1,283	1,253
Net earnings	640	634	1,211	1,198
Comprehensive income	645	444	1,097	1,208
Guarantor Subsidiaries [Member]
Condensed Consolidating Financial Information [Line Items]
Revenues	6,932	6,504	13,320	12,801
Cost of sales	5,604	5,273	10,830	10,358
General and administrative expenses	411	397	816	808
Operating earnings	917	834	1,674	1,635
Interest, net	5	2	4	3
Other, net	0	(3)	1	(2)
Earnings before income taxes	922	833	1,679	1,636
Provision for income taxes	283	308	513	546
Equity in net earnings of subsidiaries	0	0	0	0
Net earnings	639	525	1,166	1,090
Comprehensive income	637	520	1,185	1,086
Non-Guarantor Subsidiaries [Member]
Condensed Consolidating Financial Information [Line Items]
Revenues	979	1,418	1,995	2,700
Cost of sales	820	1,158	1,641	2,262
General and administrative expenses	94	106	176	208
Operating earnings	65	154	178	230
Interest, net	0	1	1	1
Other, net	2	(1)	1	(1)
Earnings before income taxes	67	154	180	230
Provision for income taxes	31	30	63	67
Equity in net earnings of subsidiaries	0	0	0	0
Net earnings	36	124	117	163
Comprehensive income	(20)	(98)	(142)	103
Consolidation, Eliminations [Member]
Condensed Consolidating Financial Information [Line Items]
Revenues	0	0	0	0
Cost of sales	0	0	0	0
General and administrative expenses	0	0	0	0
Operating earnings	0	0	0	0
Interest, net	0	0	0	0
Other, net	0	0	0	0
Earnings before income taxes	0	0	0	0
Provision for income taxes	0	0	0	0
Equity in net earnings of subsidiaries	(675)	(649)	(1,283)	(1,253)
Net earnings	(675)	(649)	(1,283)	(1,253)
Comprehensive income	$ (617)	$ (422)	$ (1,043)	$ (1,189)