Fair Value Measurements (Carrying Amounts and Fair Values of Financial Instruments) (Details) - USD ($) $ in Millions	Oct. 01, 2021	Dec. 31, 2020
Assets:
Available-for-sale debt securities	$ 21	$ 27
Investment in equity securities	318	176
Liabilities:
Cross-currency swap derivative contracts	133	622
Carrying Amount
Assets:
Available-for-sale debt securities	21	27
Investment in equity securities	318	176
Liabilities:
Cross-currency swap derivative contracts	133	622
Notes payable and current portion of long-term debt	7	11
Long-term debt	23,591	21,193
Fair Value
Assets:
Available-for-sale debt securities	21	27
Investment in equity securities	318	176
Liabilities:
Cross-currency swap derivative contracts	133	622
Notes payable and current portion of long-term debt	7	11
Long-term debt	$ 24,478	$ 23,004

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(6))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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-Section 45
-Paragraph 1
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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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-Section 45
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Fair value portion of liability contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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