Financial Instruments - Short-term Borrowings (Details) - USD ($) $ in Millions		Apr. 04, 2021	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Commercial paper		$ 416	$ 556
Current portion of long-term debt, principal amount		3,679	2,004
Other short-term borrowings, principal amount	[1]	260	145
Total short-term borrowings, principal amount		4,355	2,705
Net fair value adjustments related to hedging and purchase accounting		0	0
Net unamortized discounts, premiums and debt issuance costs		(3)	(2)
Total Short-term borrowings, including current portion of long-term debt, carried at historical proceeds, as adjusted		$ 4,352	$ 2,703

[1] Includes cash collateral. See Note 7F.