Restatement of Previously Issued Condensed Consolidated Financial Statements Schedule of Restatement of Consolidated Statement of Income (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018
Statements of Income
Net sales	$ 6,076	$ 6,383	$ 18,441	$ 19,377
Cost of products sold	4,129	4,289	12,401	12,672
Gross profit	1,947	2,094	6,040	6,705
Selling, general and administrative expenses, excluding impairment losses	762	803	2,341	2,323
Goodwill impairment losses	0	0	744	133
Intangible asset impairment losses	5	217	479	318
Selling, general and administrative expenses	767	1,020	3,564	2,774
Operating income/(loss)	1,180	1,074	2,476	3,931
Interest expense	398	326	1,035	959
Other expense/(income)	(380)	(71)	(893)	(181)
Income/(loss) before income taxes	1,162	819	2,334	3,153
Provision for/(benefit from) income taxes	264	201	584	779
Net income/(loss)	898	618	1,750	2,374
Net income/(loss) attributable to noncontrolling interest	(1)	(1)	(3)	(2)
Net income/(loss) attributable to common shareholders	$ 899	$ 619	$ 1,753	$ 2,376
Basic earnings/(loss) per share (in dollars per share)	$ 0.74	$ 0.51	$ 1.44	$ 1.95
Diluted earnings/(loss) per share (in dollars per share)	$ 0.74	$ 0.50	$ 1.43	$ 1.94
As Previously Reported
Statements of Income
Net sales		$ 6,378		$ 19,368
Cost of products sold		4,271		12,651
Gross profit		2,107		6,717
Selling, general and administrative expenses, excluding impairment losses		803		2,338
Goodwill impairment losses		0		164
Intangible asset impairment losses		234		335
Selling, general and administrative expenses		1,037		2,837
Operating income/(loss)		1,070		3,880
Interest expense		327		962
Other expense/(income)		(71)		(196)
Income/(loss) before income taxes		814		3,114
Provision for/(benefit from) income taxes		186		738
Net income/(loss)		628		2,376
Net income/(loss) attributable to noncontrolling interest		(2)		(3)
Net income/(loss) attributable to common shareholders		$ 630		$ 2,379
Basic earnings/(loss) per share (in dollars per share)		$ 0.52		$ 1.95
Diluted earnings/(loss) per share (in dollars per share)		$ 0.51		$ 1.94
Restatement Impacts
Statements of Income
Selling, general and administrative expenses, excluding impairment losses				$ (15)
Other expense/(income)				15
Restatement Impacts | Restatement
Statements of Income
Net sales		$ 5		9
Cost of products sold		18		21
Gross profit		(13)		(12)
Selling, general and administrative expenses, excluding impairment losses		0
Goodwill impairment losses		0		(31)
Intangible asset impairment losses		(17)		(17)
Selling, general and administrative expenses		(17)		(63)
Operating income/(loss)		4		51
Interest expense		(1)		(3)
Other expense/(income)		0
Income/(loss) before income taxes		5		39
Provision for/(benefit from) income taxes		15		41
Net income/(loss)		(10)		(2)
Net income/(loss) attributable to noncontrolling interest		1		1
Net income/(loss) attributable to common shareholders		$ (11)		$ (3)
Basic earnings/(loss) per share (in dollars per share)		$ (0.01)		$ 0
Diluted earnings/(loss) per share (in dollars per share)		$ (0.01)		$ 0
Restatement Impacts | Restatement, Supplier Rebates
Statements of Income
Cost of products sold		$ 13		$ 22
Provision for/(benefit from) income taxes		(2)		(3)
Restatement Impacts | Restatement, Capital Leases
Statements of Income
Cost of products sold		1		1
Interest expense		(1)		(3)
Provision for/(benefit from) income taxes		1		1
Restatement Impacts | Restatement, Income Taxes
Statements of Income
Provision for/(benefit from) income taxes		14		40
Restatement Impacts | Restatement, Impairments
Statements of Income
Selling, general and administrative expenses		(17)		(48)
Provision for/(benefit from) income taxes		4		4
Restatement Impacts | Restatement, Other Misclassifications
Statements of Income
Net sales		5		9
Cost of products sold		5		(2)
Selling, general and administrative expenses		1		1
Interest expense		(1)		(1)
Provision for/(benefit from) income taxes		(1)		1
Net income/(loss) attributable to noncontrolling interest		$ (1)		$ (1)