Supplemental Guarantor Information Condensed Consolidating Statements of Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended		9 Months Ended		12 Months Ended
	Sep. 29, 2018	Mar. 31, 2018	Apr. 01, 2017	Jun. 30, 2018	Jul. 01, 2017	Sep. 29, 2018	Sep. 30, 2017	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by/(used for) operating activities		$ 408	$ (615)	$ 216	$ (178)	$ 878	$ 15	$ 2,574	$ 501	$ 2,648
Cash receipts on sold receivables		436	464	1,221	1,069	1,296	1,633	1,296	2,286	2,589
Capital expenditures		(223)	(368)	(438)	(690)	(594)	(956)	(826)	(1,194)	(1,247)
Payments to acquire business, net of cash acquired		(215)	0	(215)	0	(248)	0	(248)	0	0
Net proceeds from/(payments on) intercompany lending activities								0	0	0
Additional investments in subsidiaries								0	0	0
Return of capital								0		0
Other investing activities, net		6	38	11	44	31	45	66	85	110
Net cash provided by/(used for) investing activities		4	134	579	423	485	722	288	1,177	1,452
Repayments of long-term debt		(6)	(27)	(12)	(2,032)	(2,706)	(2,635)	(2,713)	(2,641)	(85)
Proceeds from issuance of long-term debt		0	2	2,990	4	2,990	1,496	2,990	1,496	6,981
Proceeds from issuance of commercial paper		1,524	2,324	1,525	4,213	2,485	5,495	2,784	6,043	6,680
Repayments of commercial paper		(1,006)	(2,068)	(1,950)	(3,777)	(1,950)	(5,709)	(3,213)	(6,249)	(6,043)
Net proceeds from/(payments on) intercompany borrowing activities								0	0	0
Dividends paid - Series A Preferred Stock		0	0	0	0	0	0	0	0	(180)
Dividends paid - common stock		(897)	(736)	(1,659)	(1,434)	(2,421)	(2,161)	(3,183)	(2,888)	(3,584)
Redemption of Series A Preferred Stock		0	0	0	0	0	0	0	0	(8,320)
Other intercompany capital stock transactions								0	0	0
Other financing activities, net		14	0	(3)	15	(35)	28	(28)	18	(69)
Net cash provided by/(used for) financing activities		(371)	(505)	891	(3,011)	(1,637)	(3,486)	(3,363)	(4,221)	(4,620)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash		(10)	13	(80)	29	(128)	43	(132)	57	(137)
Net increase/(decrease)		31	(973)	1,606	(2,737)	(402)	(2,706)	(633)	(2,486)	(657)
Balance at beginning of period	$ 3,375	1,769	4,255	1,769	4,255	1,769	4,255	1,769	4,255	4,912
Balance at end of period	1,367	1,800	3,282	3,375	1,518	1,367	1,549	1,136	1,769	4,255
Eliminations
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by/(used for) operating activities								(3,193)	(2,888)	(3,112)
Cash receipts on sold receivables								0	0	0
Capital expenditures								0	0	0
Payments to acquire business, net of cash acquired								0
Net proceeds from/(payments on) intercompany lending activities								(1,832)	(99)	(727)
Additional investments in subsidiaries								41	21	10
Return of capital								(7)		(9,042)
Other investing activities, net								0	0	0
Net cash provided by/(used for) investing activities								(1,798)	(78)	(9,759)
Repayments of long-term debt								0	0	0
Proceeds from issuance of long-term debt								0	0	0
Proceeds from issuance of commercial paper								0	0	0
Repayments of commercial paper								0	0	0
Net proceeds from/(payments on) intercompany borrowing activities								1,832	99	727
Dividends paid - Series A Preferred Stock										0
Dividends paid - common stock								3,193	2,888	3,780
Redemption of Series A Preferred Stock										0
Other intercompany capital stock transactions										8,364
Other intercompany capital stock transactions								(34)	(21)
Other financing activities, net								0	0	0
Net cash provided by/(used for) financing activities								4,991	2,966	12,871
Effect of exchange rate changes on cash, cash equivalents, and restricted cash								0	0	0
Net increase/(decrease)								0	0	0
Balance at beginning of period		0	0	0	0	0	0	0	0	0
Balance at end of period								0	0	0
Parent Guarantor | Reportable Legal Entities
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by/(used for) operating activities								3,183	2,888	3,096
Cash receipts on sold receivables								0	0	0
Capital expenditures								0	0	0
Payments to acquire business, net of cash acquired								0
Net proceeds from/(payments on) intercompany lending activities								0	0	0
Additional investments in subsidiaries									(21)	0
Return of capital								7		9,042
Other investing activities, net								0	0	0
Net cash provided by/(used for) investing activities								7	(21)	9,042
Repayments of long-term debt								0	0	0
Proceeds from issuance of long-term debt								0	0	0
Proceeds from issuance of commercial paper								0	0	0
Repayments of commercial paper								0	0	0
Net proceeds from/(payments on) intercompany borrowing activities								0	0	0
Dividends paid - Series A Preferred Stock										(180)
Dividends paid - common stock								(3,183)	(2,888)	(3,584)
Redemption of Series A Preferred Stock										(8,320)
Other intercompany capital stock transactions								0	0	0
Other financing activities, net								(7)	21	(54)
Net cash provided by/(used for) financing activities								(3,190)	(2,867)	(12,138)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash								0	0	0
Net increase/(decrease)								0	0	0
Balance at beginning of period		0	0	0	0	0	0	0	0	0
Balance at end of period								0	0	0
Subsidiary Issuer | Reportable Legal Entities
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by/(used for) operating activities								1,928	1,497	4,368
Cash receipts on sold receivables								0	0	0
Capital expenditures								(339)	(757)	(923)
Payments to acquire business, net of cash acquired								(245)
Net proceeds from/(payments on) intercompany lending activities								1,626	641	690
Additional investments in subsidiaries								(41)	0	(10)
Return of capital								0		0
Other investing activities, net								31	62	129
Net cash provided by/(used for) investing activities								1,032	(54)	(114)
Repayments of long-term debt								(2,550)	(2,628)	(72)
Proceeds from issuance of long-term debt								2,990	1,496	6,978
Proceeds from issuance of commercial paper								2,784	6,043	6,680
Repayments of commercial paper								(3,213)	(6,249)	(6,043)
Net proceeds from/(payments on) intercompany borrowing activities									542
Net proceeds from/(payments on) intercompany borrowing activities								(206)		(37)
Dividends paid - Series A Preferred Stock										0
Dividends paid - common stock								(3,183)	(2,888)	(3,764)
Redemption of Series A Preferred Stock										0
Other intercompany capital stock transactions									21
Other intercompany capital stock transactions								(7)		(8,374)
Other financing activities, net								(17)	(5)	(5)
Net cash provided by/(used for) financing activities								(3,402)	(3,668)	(4,637)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash								0	0	0
Net increase/(decrease)								(442)	(2,225)	(383)
Balance at beginning of period		644	2,869	644	2,869	644	2,869	644	2,869	3,252
Balance at end of period								202	644	2,869
Non-Guarantor Subsidiaries | Reportable Legal Entities
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by/(used for) operating activities								656	(996)	(1,704)
Cash receipts on sold receivables								1,296	2,286	2,589
Capital expenditures								(487)	(437)	(324)
Payments to acquire business, net of cash acquired								(3)
Net proceeds from/(payments on) intercompany lending activities								206		37
Net proceeds from/(payments on) intercompany lending activities									(542)
Additional investments in subsidiaries									0	0
Return of capital								0		0
Other investing activities, net								35	23	(19)
Net cash provided by/(used for) investing activities								1,047	1,330	2,283
Repayments of long-term debt								(163)	(13)	(13)
Proceeds from issuance of long-term debt								0	0	3
Proceeds from issuance of commercial paper								0	0	0
Repayments of commercial paper								0	0	0
Net proceeds from/(payments on) intercompany borrowing activities								(1,626)	(641)	(690)
Dividends paid - Series A Preferred Stock										0
Dividends paid - common stock								(10)	0	(16)
Redemption of Series A Preferred Stock										0
Other intercompany capital stock transactions								41	0	10
Other financing activities, net								(4)	2	(10)
Net cash provided by/(used for) financing activities								(1,762)	(652)	(716)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash								(132)	57	(137)
Net increase/(decrease)								(191)	(261)	(274)
Balance at beginning of period		1,125	1,386	1,125	1,386	1,125	1,386	1,125	1,386	1,660
Balance at end of period								934	1,125	1,386
As Previously Reported
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by/(used for) operating activities		413	(615)	229	(178)	899	16		527	2,649
Cash receipts on sold receivables		436	464	1,221	1,069	1,296	1,633		2,286	2,589
Capital expenditures		(223)	(368)	(438)	(690)	(594)	(956)		(1,217)	(1,247)
Payments to acquire business, net of cash acquired		(215)	0	(215)	0	(248)	0		0	0
Net proceeds from/(payments on) intercompany lending activities									0	0
Additional investments in subsidiaries									0	0
Return of capital										0
Other investing activities, net		6	38	11	44	31	47		87	110
Net cash provided by/(used for) investing activities		4	134	579	423	485	724		1,156	1,452
Repayments of long-term debt		(11)	(27)	(25)	(2,032)	(2,727)	(2,636)		(2,644)	(86)
Proceeds from issuance of long-term debt		0	2	2,990	4	2,990	1,496		1,496	6,981
Proceeds from issuance of commercial paper		1,524	2,324	1,525	4,213	2,485	5,495		6,043	6,680
Repayments of commercial paper		(1,006)	(2,068)	(1,950)	(3,777)	(1,950)	(5,709)		(6,249)	(6,043)
Net proceeds from/(payments on) intercompany borrowing activities									0	0
Dividends paid - Series A Preferred Stock		0	0	0	0	0	0		0	(180)
Dividends paid - common stock		(897)	(736)	(1,659)	(1,434)	(2,421)	(2,161)		(2,888)	(3,584)
Redemption of Series A Preferred Stock		0	0	0	0	0	0		0	(8,320)
Other intercompany capital stock transactions									0	0
Other financing activities, net		14	0	(3)	15	(35)	26		16	(69)
Net cash provided by/(used for) financing activities		(376)	(505)	878	(3,011)	(1,658)	(3,489)		(4,226)	(4,621)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash		(10)	13	(80)	29	(128)	43		57	(137)
Net increase/(decrease)		31	(973)	1,606	(2,737)	(402)	(2,706)		(2,486)	(657)
Balance at beginning of period	3,375	1,769	4,255	1,769	4,255	1,769	4,255	1,769	4,255	4,912
Balance at end of period	$ 1,367	1,800	3,282	3,375	1,518	1,367	1,549		1,769	4,255
As Previously Reported | Eliminations
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by/(used for) operating activities									(2,888)	(3,112)
Cash receipts on sold receivables									0	0
Capital expenditures									0	0
Net proceeds from/(payments on) intercompany lending activities									(99)	(727)
Additional investments in subsidiaries									22	(45)
Return of capital										(8,987)
Other investing activities, net									0	0
Net cash provided by/(used for) investing activities									(77)	(9,759)
Repayments of long-term debt									0	0
Proceeds from issuance of long-term debt									0	0
Proceeds from issuance of commercial paper									0	0
Repayments of commercial paper									0	0
Net proceeds from/(payments on) intercompany borrowing activities									99	727
Dividends paid - Series A Preferred Stock										0
Dividends paid - common stock									2,888	3,780
Redemption of Series A Preferred Stock										0
Other intercompany capital stock transactions										8,364
Other intercompany capital stock transactions									(22)
Other financing activities, net									0	0
Net cash provided by/(used for) financing activities									2,965	12,871
Effect of exchange rate changes on cash, cash equivalents, and restricted cash									0	0
Net increase/(decrease)									0	0
Balance at beginning of period		0	0	0	0	0	0	0	0	0
Balance at end of period									0	0
As Previously Reported | Parent Guarantor | Reportable Legal Entities
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by/(used for) operating activities									2,888	3,097
Cash receipts on sold receivables									0	0
Capital expenditures									0	0
Net proceeds from/(payments on) intercompany lending activities									0	0
Additional investments in subsidiaries									(22)	55
Return of capital										8,987
Other investing activities, net									0	0
Net cash provided by/(used for) investing activities									(22)	9,042
Repayments of long-term debt									0	0
Proceeds from issuance of long-term debt									0	0
Proceeds from issuance of commercial paper									0	0
Repayments of commercial paper									0	0
Net proceeds from/(payments on) intercompany borrowing activities									0	0
Dividends paid - Series A Preferred Stock										(180)
Dividends paid - common stock									(2,888)	(3,584)
Redemption of Series A Preferred Stock										(8,320)
Other intercompany capital stock transactions									0	0
Other financing activities, net									22	(55)
Net cash provided by/(used for) financing activities									(2,866)	(12,139)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash									0	0
Net increase/(decrease)									0	0
Balance at beginning of period		0	0	0	0	0	0	0	0	0
Balance at end of period									0	0
As Previously Reported | Subsidiary Issuer | Reportable Legal Entities
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by/(used for) operating activities									1,499	4,369
Cash receipts on sold receivables									0	0
Capital expenditures									(757)	(923)
Net proceeds from/(payments on) intercompany lending activities									641	690
Additional investments in subsidiaries									0	(10)
Return of capital										0
Other investing activities, net									64	129
Net cash provided by/(used for) investing activities									(52)	(114)
Repayments of long-term debt									(2,632)	(72)
Proceeds from issuance of long-term debt									1,496	6,978
Proceeds from issuance of commercial paper									6,043	6,680
Repayments of commercial paper									(6,249)	(6,043)
Net proceeds from/(payments on) intercompany borrowing activities									542
Net proceeds from/(payments on) intercompany borrowing activities										(37)
Dividends paid - Series A Preferred Stock										0
Dividends paid - common stock									(2,888)	(3,764)
Redemption of Series A Preferred Stock										0
Other intercompany capital stock transactions									22
Other intercompany capital stock transactions										(8,374)
Other financing activities, net									(6)	(6)
Net cash provided by/(used for) financing activities									(3,672)	(4,638)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash									0	0
Net increase/(decrease)									(2,225)	(383)
Balance at beginning of period		644	2,869	644	2,869	644	2,869	644	2,869	3,252
Balance at end of period									644	2,869
As Previously Reported | Non-Guarantor Subsidiaries | Reportable Legal Entities
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by/(used for) operating activities									(972)	(1,705)
Cash receipts on sold receivables									2,286	2,589
Capital expenditures									(460)	(324)
Net proceeds from/(payments on) intercompany lending activities										37
Net proceeds from/(payments on) intercompany lending activities									(542)
Additional investments in subsidiaries									0	0
Return of capital										0
Other investing activities, net									23	(19)
Net cash provided by/(used for) investing activities									1,307	2,283
Repayments of long-term debt									(12)	(14)
Proceeds from issuance of long-term debt									0	3
Proceeds from issuance of commercial paper									0	0
Repayments of commercial paper									0	0
Net proceeds from/(payments on) intercompany borrowing activities									(641)	(690)
Dividends paid - Series A Preferred Stock										0
Dividends paid - common stock									0	(16)
Redemption of Series A Preferred Stock										0
Other intercompany capital stock transactions									0	10
Other financing activities, net									0	(8)
Net cash provided by/(used for) financing activities									(653)	(715)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash									57	(137)
Net increase/(decrease)									(261)	(274)
Balance at beginning of period		$ 1,125	$ 1,386	$ 1,125	$ 1,386	$ 1,125	$ 1,386	$ 1,125	1,386	1,660
Balance at end of period									$ 1,125	$ 1,386