Prior-Period Financial Statements - Consolidated Statement of Earnings (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2017	Jul. 03, 2016	Jul. 02, 2017	Jul. 03, 2016
New Accounting Pronouncements
Products	$ 4,654	$ 4,943	$ 9,121	$ 9,525
Services	3,021	2,831	5,995	5,725
Revenue	7,675	7,774	15,116	15,250
Products	3,582	3,889	7,018	7,524
Services	2,532	2,373	5,021	4,829
General and administrative (G&A)	505	485	986	946
Operating costs and expenses, total	6,619	6,747	13,025	13,299
Operating earnings	1,056	1,027	2,091	1,951
Interest, net	(24)	(23)	(49)	(45)
Other, net	0	1	0	11
Earnings before income tax	1,032	1,005	2,042	1,917
Provision for income tax, net	283	291	530	549
Earnings from continuing operations			1,512	1,368
Discontinued operations, net of tax			0	(13)
Net earnings	$ 749	$ 714	$ 1,512	$ 1,355
Continuing operations	$ 2.50	$ 2.35	$ 5.03	$ 4.47
Discontinued operations			0.00	(0.04)
Basic			5.03	4.43
Continuing operations	$ 2.45	$ 2.30	4.94	4.39
Discontinued operations			0.00	(0.04)
Diluted			$ 4.94	$ 4.35
Previously Reported
New Accounting Pronouncements
Products		$ 4,848		$ 9,712
Services		2,817		5,677
Revenue		7,665		15,389
Products		3,747		7,530
Services		2,362		4,790
General and administrative (G&A)		486		946
Operating costs and expenses, total		6,595		13,266
Operating earnings		1,070		2,123
Interest, net		(23)		(45)
Other, net		1		11
Earnings before income tax		1,048		2,089
Provision for income tax, net		290		601
Earnings from continuing operations				1,488
Discontinued operations, net of tax				(13)
Net earnings		$ 758		$ 1,475
Continuing operations				$ 4.86
Discontinued operations				(0.04)
Basic		$ 2.49		4.82
Continuing operations				4.77
Discontinued operations				(0.04)
Diluted		$ 2.44		$ 4.73
Restatement Adjustment | Accounting Standards Update 2016-09
New Accounting Pronouncements
Products		$ 0		$ 0
Services		0		0
Revenue		0		0
Products		0		0
Services		0		0
General and administrative (G&A)		0		0
Operating costs and expenses, total		0		0
Operating earnings		0		0
Interest, net		0		0
Other, net		0		0
Earnings before income tax		0		0
Provision for income tax, net		15		0
Earnings from continuing operations				0
Discontinued operations, net of tax				0
Net earnings		$ (15)		$ 0
Continuing operations				$ 0.00
Discontinued operations				0.00
Basic		$ (0.05)		0.00
Continuing operations				0.00
Discontinued operations				0.00
Diluted		$ (0.04)		$ 0.00
Restatement Adjustment | Accounting Standards Update 2014-09
New Accounting Pronouncements
Products		$ 95		$ (187)
Services		14		48
Revenue		109		(139)
Products		142		(6)
Services		11		39
General and administrative (G&A)		(1)		0
Operating costs and expenses, total		152		33
Operating earnings		(43)		(172)
Interest, net		0		0
Other, net		0		0
Earnings before income tax		(43)		(172)
Provision for income tax, net		(14)		(52)
Earnings from continuing operations				(120)
Discontinued operations, net of tax				0
Net earnings		$ (29)		$ (120)
Continuing operations				$ (0.39)
Discontinued operations				0.00
Basic		$ (0.09)		(0.39)
Continuing operations				(0.38)
Discontinued operations				0.00
Diluted		$ (0.10)		$ (0.38)
Restatement Adjustment | Accounting Standards Update 2015-17
New Accounting Pronouncements
Products		$ 0		$ 0
Services		0		0
Revenue		0		0
Products		0		0
Services		0		0
General and administrative (G&A)		0		0
Operating costs and expenses, total		0		0
Operating earnings		0		0
Interest, net		0		0
Other, net		0		0
Earnings before income tax		0		0
Provision for income tax, net		0		0
Earnings from continuing operations				0
Discontinued operations, net of tax				0
Net earnings		$ 0		$ 0
Continuing operations				$ 0.00
Discontinued operations				0.00
Basic		$ 0.00		0.00
Continuing operations				0.00
Discontinued operations				0.00
Diluted		$ 0.00		$ 0.00