Condensed Consolidating Balance Sheet (Details) - USD ($) $ in Millions		Jul. 02, 2017	Dec. 31, 2016	Jul. 03, 2016	Dec. 31, 2015
Current assets:
Cash and equivalents		$ 1,856	$ 2,334	$ 1,899	$ 2,785
Accounts receivable		3,690	3,399
Unbilled receivables		5,045	4,212
Inventories		5,839	5,817
Other current assets		696	772
Total current assets		17,126	16,534
Noncurrent assets:
Property, plant and equipment		8,010	7,929
Accumulated depreciation of PP&E		(4,586)	(4,452)
Intangible assets		685	678
Goodwill	[1]	11,679	11,445
Other assets		879	1,038
Investment in subsidiaries		0	0
Total noncurrent assets		16,667	16,638
Total assets		33,793	33,172
Current liabilities:
Short-term debt		989	900
Customer advances and deposits		6,822	6,827
Other current liabilities		5,692	5,723
Total current liabilities		13,503	13,450
Noncurrent liabilities:
Long-term debt		2,989	2,988
Other liabilities		6,349	6,433
Total noncurrent liabilities		9,338	9,421
Intercompany		0	0
Shareholders’ equity:
Common stock		482	482
Other shareholders' equity		10,470	9,819
Total shareholders’ equity		10,952	10,301	10,579	10,440
Total liabilities and shareholders’ equity		33,793	33,172
Consolidating Adjustments
Current assets:
Cash and equivalents		0	0	0	0
Accounts receivable		0	0
Unbilled receivables		0	0
Inventories		0	0
Other current assets		0	0
Total current assets		0	0
Noncurrent assets:
Property, plant and equipment		0	0
Accumulated depreciation of PP&E		0	0
Intangible assets		0	0
Goodwill		0	0
Other assets		0	0
Investment in subsidiaries		(42,559)	(41,956)
Total noncurrent assets		(42,559)	(41,956)
Total assets		(42,559)	(41,956)
Current liabilities:
Short-term debt		0	0
Customer advances and deposits		0	0
Other current liabilities		0	0
Total current liabilities		0	0
Noncurrent liabilities:
Long-term debt		0	0
Other liabilities		0	0
Total noncurrent liabilities		0	0
Intercompany		0	0
Shareholders’ equity:
Common stock		(2,132)	(2,360)
Other shareholders' equity		(40,427)	(39,596)
Total shareholders’ equity		(42,559)	(41,956)
Total liabilities and shareholders’ equity		(42,559)	(41,956)
Parent Company
Current assets:
Cash and equivalents		847	1,254	1,011	1,732
Accounts receivable		0	0
Unbilled receivables		0	0
Inventories		188	304
Other current assets		227	330
Total current assets		1,262	1,888
Noncurrent assets:
Property, plant and equipment		202	197
Accumulated depreciation of PP&E		(70)	(67)
Intangible assets		0	0
Goodwill		0	0
Other assets		497	640
Investment in subsidiaries		42,559	41,956
Total noncurrent assets		43,188	42,726
Total assets		44,450	44,614
Current liabilities:
Short-term debt		899	898
Customer advances and deposits		0	0
Other current liabilities		601	564
Total current liabilities		1,500	1,462
Noncurrent liabilities:
Long-term debt		2,968	2,966
Other liabilities		2,344	3,520
Total noncurrent liabilities		5,312	6,486
Intercompany		26,686	26,365
Shareholders’ equity:
Common stock		482	482
Other shareholders' equity		10,470	9,819
Total shareholders’ equity		10,952	10,301
Total liabilities and shareholders’ equity		44,450	44,614
Guarantor Subsidiaries
Current assets:
Cash and equivalents		0	0	0	0
Accounts receivable		1,120	1,155
Unbilled receivables		2,633	2,235
Inventories		5,558	5,417
Other current assets		195	204
Total current assets		9,506	9,011
Noncurrent assets:
Property, plant and equipment		6,597	6,586
Accumulated depreciation of PP&E		(3,748)	(3,653)
Intangible assets		252	265
Goodwill		8,081	8,050
Other assets		228	232
Investment in subsidiaries		0	0
Total noncurrent assets		11,410	11,480
Total assets		20,916	20,491
Current liabilities:
Short-term debt		2	2
Customer advances and deposits		4,008	4,339
Other current liabilities		3,556	3,465
Total current liabilities		7,566	7,806
Noncurrent liabilities:
Long-term debt		21	22
Other liabilities		3,368	2,330
Total noncurrent liabilities		3,389	2,352
Intercompany		(26,606)	(25,827)
Shareholders’ equity:
Common stock		6	6
Other shareholders' equity		36,561	36,154
Total shareholders’ equity		36,567	36,160
Total liabilities and shareholders’ equity		20,916	20,491
Non-Guarantor Subsidiaries
Current assets:
Cash and equivalents		1,009	1,080	$ 888	$ 1,053
Accounts receivable		2,570	2,244
Unbilled receivables		2,412	1,977
Inventories		93	96
Other current assets		274	238
Total current assets		6,358	5,635
Noncurrent assets:
Property, plant and equipment		1,211	1,146
Accumulated depreciation of PP&E		(768)	(732)
Intangible assets		433	413
Goodwill		3,598	3,395
Other assets		154	166
Investment in subsidiaries		0	0
Total noncurrent assets		4,628	4,388
Total assets		10,986	10,023
Current liabilities:
Short-term debt		88	0
Customer advances and deposits		2,814	2,488
Other current liabilities		1,535	1,694
Total current liabilities		4,437	4,182
Noncurrent liabilities:
Long-term debt		0	0
Other liabilities		637	583
Total noncurrent liabilities		637	583
Intercompany		(80)	(538)
Shareholders’ equity:
Common stock		2,126	2,354
Other shareholders' equity		3,866	3,442
Total shareholders’ equity		5,992	5,796
Total liabilities and shareholders’ equity		$ 10,986	$ 10,023

[1] Goodwill on December 31, 2016, and July 2, 2017, in the Information Systems and Technology reporting unit is net of $2 billion of accumulated impairment losses.