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Fair Value Measurements - Summary of Classification on Balance Sheet (Details) - Equity Securities - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities
Total	$ 5,743	$ 6,970
Cash and cash equivalents
Fair Value, Assets and Liabilities
Marketable equity securities	3,661	4,361
Prepaid and other current assets
Fair Value, Assets and Liabilities
Marketable equity securities	885	853
Other long-term assets
Fair Value, Assets and Liabilities
Marketable equity securities	$ 1,197	$ 1,756

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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
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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), classified as current.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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