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Investments - Narrative: Available-for-sale Investments (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Cash	$ 630	$ 4,970
Cash and Cash Equivalents, at Carrying Value	34,248	$ 7,629
Cash payment	27,800
Horizon Therapeutics
Debt Securities, Available-for-sale [Line Items]
Cash payment	$ 27,800

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