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Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018	Dec. 30, 2018
Derivative [Line Items]
Available-for-sale Securities, Equity Securities	$ 963		$ 963		$ 511
Accumulated other comprehensive income on derivatives, after tax	(341)		$ (341)
Reclassification of foreign exchange contracts into earnings, period			next 12 months
Maximum length of time for hedge exposure			18 months
Unrealized gains on equity investments	$ 1	$ 0	$ 1	$ 0
Weighted average interest rate on non-current debt	3.19%		3.19%
Excess of the estimated fair value over the carrying value of debt					300
Business Combination, Contingent Consideration, Liability	$ 1,479		$ 1,479		335
Forward foreign exchange contracts
Derivative [Line Items]
Collateral Already Posted, Aggregate Fair Value	384		384
Derivative notional amounts outstanding	49,700		49,700		41,100
Cross currency interest rate swaps
Derivative [Line Items]
Derivative notional amounts outstanding	15,300		15,300		7,300
Interest Rate Contract
Derivative [Line Items]
Derivative Liability, Noncurrent	1		1		3
Derivative notional amounts outstanding	500		500		500
Equity Securities
Derivative [Line Items]
Available-for-sale Securities, Equity Securities	963		963		511
Equity Investments without readily determinable value \| Equity Securities
Derivative [Line Items]
Equity, Fair Value Adjustment, Impairment Loss			(22)
Changes in fair value, changes in observable prices			(1)
Other (income) expense
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	0	0
Fair Value Hedging [Member] \| Sales [Member] \| Cross currency interest rate swaps
Derivative [Line Items]
Derivative, Excluded Component, Gain (Loss), Recognized in Earnings	0	0	0	0
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, after Tax	0	0	0	0
Fair Value Hedging [Member] \| Sales [Member] \| Interest Rate Contract
Derivative [Line Items]
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments	0	0	0	0
Fair Value Hedging [Member] \| Cost of Sales [Member] \| Cross currency interest rate swaps
Derivative [Line Items]
Derivative, Excluded Component, Gain (Loss), Recognized in Earnings	0	0	0	0
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, after Tax	0	0	0	0
Fair Value Hedging [Member] \| Cost of Sales [Member] \| Interest Rate Contract
Derivative [Line Items]
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments	0	0	0	0
Fair Value Hedging [Member] \| Research and Development Expense [Member] \| Cross currency interest rate swaps
Derivative [Line Items]
Derivative, Excluded Component, Gain (Loss), Recognized in Earnings	0	0	0	0
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, after Tax	0	0	0	0
Fair Value Hedging [Member] \| Research and Development Expense [Member] \| Interest Rate Contract
Derivative [Line Items]
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments	0	0	0	0
Fair Value Hedging [Member] \| Interest Income Expense Net Member \| Cross currency interest rate swaps
Derivative [Line Items]
Derivative, Excluded Component, Gain (Loss), Recognized in Earnings	39	2	78	2
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, after Tax	39	2	78	2
Fair Value Hedging [Member] \| Interest Income Expense Net Member \| Interest Rate Contract
Derivative [Line Items]
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments	1	5	1	10
Fair Value Hedging [Member] \| Other (income) expense \| Cross currency interest rate swaps
Derivative [Line Items]
Derivative, Excluded Component, Gain (Loss), Recognized in Earnings	0	0	0	0
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, after Tax	0	0	0	0
Fair Value Hedging [Member] \| Other (income) expense \| Interest Rate Contract
Derivative [Line Items]
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments	0	0	0	0
Fair Value Hedging [Member] \| Designated as Hedging Instrument [Member] \| Sales [Member] \| Interest Rate Contract
Derivative [Line Items]
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments	0	0	0	0
Fair Value Hedging [Member] \| Designated as Hedging Instrument [Member] \| Cost of Sales [Member] \| Interest Rate Contract
Derivative [Line Items]
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments	0	0	0	0
Fair Value Hedging [Member] \| Designated as Hedging Instrument [Member] \| Research and Development Expense [Member] \| Interest Rate Contract
Derivative [Line Items]
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments	0	0	0	0
Fair Value Hedging [Member] \| Designated as Hedging Instrument [Member] \| Interest Income Expense Net Member \| Interest Rate Contract
Derivative [Line Items]
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments	(1)	(5)	(1)	(10)
Fair Value Hedging [Member] \| Designated as Hedging Instrument [Member] \| Other (income) expense \| Interest Rate Contract
Derivative [Line Items]
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments	0	0	0	$ 0
Cash Flow Hedging [Member] \| Sales [Member] \| Forward foreign exchange contracts
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	(14)	17
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, after Tax	0	(49)
Cash Flow Hedging [Member] \| Sales [Member] \| Cross currency interest rate swaps
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	0	0
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, after Tax	0	0
Cash Flow Hedging [Member] \| Cost of Sales [Member] \| Forward foreign exchange contracts
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	(101)	76
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, after Tax	(50)	(57)
Cash Flow Hedging [Member] \| Cost of Sales [Member] \| Cross currency interest rate swaps
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	0
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, after Tax	0	0
Cash Flow Hedging [Member] \| Research and Development Expense [Member] \| Forward foreign exchange contracts
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	36	(14)
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, after Tax	18	21
Cash Flow Hedging [Member] \| Research and Development Expense [Member] \| Cross currency interest rate swaps
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	0	0
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, after Tax	0	0
Cash Flow Hedging [Member] \| Interest Income Expense Net Member \| Forward foreign exchange contracts
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	0	0
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, after Tax	0	0
Cash Flow Hedging [Member] \| Interest Income Expense Net Member \| Cross currency interest rate swaps
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	64	32
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, after Tax	82	19
Cash Flow Hedging [Member] \| Other (income) expense \| Forward foreign exchange contracts
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	2	(10)
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, after Tax	(3)	3
Cash Flow Hedging [Member] \| Other (income) expense \| Cross currency interest rate swaps
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	0	0
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, after Tax	0	$ 0
Other Noncurrent Liabilities
Derivative [Line Items]
Business Combination, Contingent Consideration, Liability	1,370		1,370		$ 335
Other Current Liabilities
Derivative [Line Items]
Business Combination, Contingent Consideration, Liability	$ 109		$ 109