Financing (Narrative) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions		3 Months Ended
Apr. 02, 2021	Apr. 02, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Debt discounts, premiums and debt issuance costs	$ 127	$ 127	$ 132
Common stock, par value	$ 0.01	$ 0.01	$ 0.01
Euro-denominated commercial paper \| Commercial paper
Debt Instrument [Line Items]
Weighted average interest rate of long-term debt, interest rate	0.40%	0.40%
Weighted average maturity of long-term debt, at point in time	24 days
Zero-coupon LYONs due 2021 \| Convertible debt
Debt Instrument [Line Items]
Shares issued under debt conversion, shares		912
Debt conversion, converted instrument, deferred tax liability		$ 10
Long-term debt \| Revolving credit facility \| Five-Year Facility
Debt Instrument [Line Items]
Line of credit	$ 5,000	$ 5,000

Debt Conversion, Converted Instrument, Deferred Tax Liability

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- Definition

Long-term Debt, Weighted Average Maturity, at Point in Time

+ References

No definition available.

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- Definition

Face amount or stated value per share of common stock.

+ References

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-Publisher FASB
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- Definition

The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

Weighted average interest rate of long-term debt outstanding calculated at point in time.

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