Revenues - Reconciliation of ASC 606 to Prior Accounting Standards (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017	Dec. 31, 2017	Dec. 30, 2017
Consolidated Balance Sheets
Accounts receivable, net	$ 1,110
Inventories	4,090			$ 4,150
Other current assets	933
Property, plant and equipment, net	2,711
Other assets	1,953
Total assets	14,968			15,340
Other current liabilities	2,104
Total liabilities	9,276			9,693
Retained earnings	5,642			5,368
Total shareholders' equity	5,692			5,647
Consolidated Statements of Operations
Total revenues	3,296
Cost of sales	2,729
Income from continuing operations before income taxes	218	$ 121
Income tax expense	29	21
Income from continuing operations	189	100
Net income	$ 189	$ 101
Basic earnings per share - continuing operations	$ 0.73	$ 0.37
Diluted earnings per share - continuing operations	$ 0.72	$ 0.37
Consolidated Statements of Comprehensive Income
Other comprehensive income	$ 74	$ 50
Comprehensive income	263	151
Consolidated Statements of Cash flows
Net income	189	101
Income from continuing operations	189
Adjustments to reconcile income from continuing operations to net cash used in operating activities:
Deferred income taxes	2	13
Accounts receivable, net	63	(103)
Inventories	(128)	(122)
Other assets	(119)	(30)
Other liabilities	(263)	(158)
Net cash provided by (used in) operating activities of continuing operations	(85)	(191)
Under Prior Accounting
Consolidated Balance Sheets
Accounts receivable, net	1,322
Inventories	4,380
Other current assets	421
Property, plant and equipment, net	2,717
Other assets	1,984
Total assets	14,995
Other current liabilities	2,238
Total liabilities	9,410
Retained earnings	5,535
Total shareholders' equity	5,585
Consolidated Statements of Operations
Total revenues	3,075
Cost of sales	2,531
Income from continuing operations before income taxes	195
Income tax expense	23
Income from continuing operations	172
Net income	$ 172
Basic earnings per share - continuing operations	$ 0.66
Diluted earnings per share - continuing operations	$ 0.65
Consolidated Statements of Comprehensive Income
Other comprehensive income	$ 57
Comprehensive income	246
Consolidated Statements of Cash flows
Net income	172
Income from continuing operations	172
Adjustments to reconcile income from continuing operations to net cash used in operating activities:
Deferred income taxes	(4)
Accounts receivable, net	54
Inventories	(219)
Other assets	(44)
Other liabilities	(215)
Net cash provided by (used in) operating activities of continuing operations	(85)
ASC 606 | Effect of adoption of ASC 606
Consolidated Balance Sheets
Accounts receivable, net	212		$ (203)
Inventories	290		(199)
Other current assets	(512)
Property, plant and equipment, net	6
Other assets	31
Total assets	27
Other current liabilities	134
Total liabilities	134
Retained earnings	(107)		$ 90
Total shareholders' equity	(107)
Consolidated Statements of Operations
Total revenues	(221)
Cost of sales	(198)
Income from continuing operations before income taxes	(23)
Income tax expense	(6)
Income from continuing operations	(17)
Net income	$ (17)
Basic earnings per share - continuing operations	$ (0.07)
Diluted earnings per share - continuing operations	$ (0.07)
Consolidated Statements of Comprehensive Income
Other comprehensive income	$ (17)
Comprehensive income	(17)
Consolidated Statements of Cash flows
Net income	(17)
Income from continuing operations	(17)
Adjustments to reconcile income from continuing operations to net cash used in operating activities:
Deferred income taxes	(6)
Accounts receivable, net	(9)
Inventories	(91)
Other assets	75
Other liabilities	48
Manufacturing group
Consolidated Balance Sheets
Accounts receivable, net	1,110			1,363
Inventories	4,090			4,150
Other current assets	933			435
Property, plant and equipment, net	2,711			2,721
Other assets	1,953			2,059
Total assets	13,853			14,171
Other current liabilities	2,104			2,441
Total liabilities	8,340			$ 8,740
Consolidated Statements of Operations
Income from continuing operations	179	94
Adjustments to reconcile income from continuing operations to net cash used in operating activities:
Deferred income taxes	2	13
Accounts receivable, net	63	(103)
Inventories	(128)	(122)
Other assets	(118)	(29)
Other liabilities	(259)	(151)
Net cash provided by (used in) operating activities of continuing operations	(53)	$ (165)
Manufacturing group | Under Prior Accounting
Consolidated Balance Sheets
Total assets	13,880
Total liabilities	8,474
Manufacturing group | ASC 606 | Effect of adoption of ASC 606
Consolidated Balance Sheets
Total assets	27
Total liabilities	134
Manufacturing
Consolidated Statements of Operations
Total revenues	3,280
Manufacturing | Under Prior Accounting
Consolidated Statements of Operations
Total revenues	3,059
Manufacturing | ASC 606 | Effect of adoption of ASC 606
Consolidated Statements of Operations
Total revenues	$ (221)