Financial Instruments - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Financial Instruments and Fair Value [Line Items]
Fair value of non-marketable equity securities	$ 28,766	$ 28,529
Gross realized gain on debt securities	182	103	$ 432
Gross realized loss on debt securities	1,833	1,588	$ 329
Unrealized gain on equity securities	18,100	16,800
Equity method investments	1,700	$ 1,500
Foreign currency gain (loss) to be reclassified during next 12 months	47
Level 2
Financial Instruments and Fair Value [Line Items]
Fair value of non-marketable equity securities	$ 13,700
Cash flow hedges \| Foreign exchange contracts
Financial Instruments and Fair Value [Line Items]
Foreign exchange option contracts, maximum maturities	24 months

Financial Instruments and Fair Value [Line Items]

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
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Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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- Definition

Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

Amount of investment in equity security without readily determinable fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 321
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- Definition

Amount of cumulative gain from upward price adjustment on investment in equity security without readily determinable fair value.

+ References

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

The estimated net amount of unrealized gains or losses on foreign currency cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

+ References

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