Condensed Consolidating Financial Statements - Condensed Consolidating Statements of Earnings (Unaudited) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 29, 2019	Sep. 30, 2018	Sep. 29, 2019	Sep. 30, 2018
Condensed Financial Statements [Line Items]
Revenue	$ 9,761	$ 9,094	$ 28,577	$ 25,815
Cost of sales	(7,973)	(7,407)	(23,475)	(20,883)
G&A	(572)	(552)	(1,782)	(1,701)
Operating earnings	1,216	1,135	3,320	3,231
Interest, net	(114)	(114)	(350)	(244)
Other, net	(12)	2	18	(34)
Earnings before income tax	1,090	1,023	2,988	2,953
Provision for income tax, net	(177)	(159)	(524)	(504)
Discontinued operations, net of tax	0	(13)	0	(13)
Equity in net earnings of subsidiaries	0	0	0	0
Net earnings	913	851	2,464	2,436
Comprehensive income	858	1,048	2,711	2,533
Consolidating Adjustments
Condensed Financial Statements [Line Items]
Revenue	0	0	0	0
Cost of sales	0	0	0	0
G&A	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 tax	0	0	0	0
Provision for income tax, net	0	0	0	0
Discontinued operations, net of tax		0		0
Equity in net earnings of subsidiaries	(973)	(946)	(2,658)	(2,642)
Net earnings	(973)	(946)	(2,658)	(2,642)
Comprehensive income	(866)	(1,076)	(2,758)	(2,540)
Parent
Condensed Financial Statements [Line Items]
Revenue	0	0	0	0
Cost of sales	36	26	75	54
G&A	(17)	(15)	(58)	(73)
Operating earnings	19	11	17	(19)
Interest, net	(105)	(105)	(322)	(225)
Other, net	(6)	4	17	(38)
Earnings before income tax	(92)	(90)	(288)	(282)
Provision for income tax, net	32	8	94	89
Discontinued operations, net of tax		(13)		(13)
Equity in net earnings of subsidiaries	973	946	2,658	2,642
Net earnings	913	851	2,464	2,436
Comprehensive income	858	1,048	2,711	2,533
Guarantors on a Combined Basis
Condensed Financial Statements [Line Items]
Revenue	7,660	6,811	22,042	20,088
Cost of sales	(6,257)	(5,518)	(18,094)	(16,195)
G&A	(415)	(393)	(1,262)	(1,247)
Operating earnings	988	900	2,686	2,646
Interest, net	(1)	(2)	0	(1)
Other, net	1	2	4	6
Earnings before income tax	988	900	2,690	2,651
Provision for income tax, net	(168)	(132)	(495)	(475)
Discontinued operations, net of tax		0		0
Equity in net earnings of subsidiaries	0	0	0	0
Net earnings	820	768	2,195	2,176
Comprehensive income	813	769	2,182	2,154
Other Subsidiaries on a Combined Basis
Condensed Financial Statements [Line Items]
Revenue	2,101	2,283	6,535	5,727
Cost of sales	(1,752)	(1,915)	(5,456)	(4,742)
G&A	(140)	(144)	(462)	(381)
Operating earnings	209	224	617	604
Interest, net	(8)	(7)	(28)	(18)
Other, net	(7)	(4)	(3)	(2)
Earnings before income tax	194	213	586	584
Provision for income tax, net	(41)	(35)	(123)	(118)
Discontinued operations, net of tax		0		0
Equity in net earnings of subsidiaries	0	0	0	0
Net earnings	153	178	463	466
Comprehensive income	$ 53	$ 307	$ 576	$ 386