Fair Value Measurements, Derivative Instruments, Gains & Losses (Details) - USD ($) $ in Millions	3 Months Ended
Apr. 03, 2021	Mar. 28, 2020
Cross Currency Interest Rate Contract [Member] \| Other Income (Expense) [Member] \| Derivatives Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivative, Net		$ (10)
Currency Exchange Contracts [Member] \| Cost of Product Revenues [Member] \| Derivatives Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivative, Net	$ 12	3
Currency Exchange Contracts [Member] \| Other Income (Expense) [Member] \| Derivatives Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivative, Net	183	40
Fair Value Hedging [Member] \| Interest Rate Swaps [Member] \| Other Income (Expense) [Member] \| Derivatives Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Change in Unrealized Gain (Loss) on Hedged long-term obligations in Fair Value Hedge	25	(36)
Gain (Loss) on Derivative, Net	(3)	36
Cash Flow Hedging [Member] \| Interest Rate Swaps [Member] \| Derivatives Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) in OCI on Cash Flow Hedge		(81)
Cash Flow Hedging [Member] \| Interest Rate Swaps [Member] \| Other Income (Expense) [Member] \| Derivatives Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Cash Flow Hedge Reclassified from AOCI	(17)	(2)
Net Investment Hedging [Member] \| Foreign currency-denominated debt [Member] \| Derivatives Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) in Currency Translation Adjustment on Net Investment Hedge	466	83
Net Investment Hedging [Member] \| Cross Currency Interest Rate Contract [Member] \| Derivatives Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) in Currency Translation Adjustment on Net Investment Hedge	38	9
Net Investment Hedging [Member] \| Cross Currency Interest Rate Contract [Member] \| Other Income (Expense) [Member] \| Derivatives Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivative, Net	$ 2	$ 5

Amount of the increase (decrease) in fair value of the hedged item in a fair value hedge recognized in the income statement.

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Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

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Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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Amount, before tax, of increase (decrease) in the cumulative translation adjustment from gain (loss) on foreign currency derivatives that are designated as, and are effective as, economic hedges of a net investment in a foreign entity.

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