Financial Instruments - Carrying Values for Marketable and Non-marketable Equity Securities (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Marketable Equity Securities
Total initial cost	$ 5,647	$ 5,764
Cumulative net gain (loss)	(352)	(608)
Carrying value	5,295	5,156
Non-Marketable Equity Securities
Total initial cost	17,261	16,157
Cumulative net gain (loss)	11,868	12,372
Carrying value	29,129	28,529
Total
Total initial cost	22,908	21,921
Cumulative net gain (loss)	11,516	11,764
Carrying value	34,424	33,685
Cumulative net gain of non-marketable securities	17,800	16,800
Unrealized loss of non-marketable securities	$ 5,900	$ 4,500

Equity Securities, FV-NI, Accumulated Gross Unrealized Gain (Loss), Before Tax

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Equity Securities, FV-NI And Without Readily Determinable Fair Value, Accumulated Gross Unrealized Gain (Loss), Before Tax

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Equity Securities, FV-NI And Without Readily Determinable Fair Value, Cost

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Equity Securities Without Readily Determinable Fair Value, Accumulated Gross Unrealized Gain (Loss), Before Tax

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Equity Securities Without Readily Determinable Fair Value, Cost

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Non-marketable Equity Securities

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- Definition

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current.

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-Topic 210
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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) and investment in equity security without readily determinable fair value.

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Cost of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value.

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

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

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

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