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Investments - BeiGene, Ltd. (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Equity securities	$ 5,057		$ 5,057		$ 4,514
Net unrealized gains	0	$ 0	0	$ 0
Other Noncurrent Assets
Debt Securities, Available-for-sale [Line Items]
Equity securities	336		336		494
BeiGene
Debt Securities, Available-for-sale [Line Items]
Net unrealized gains	1,600	$ 30	836	$ 1,200
BeiGene | Other Noncurrent Assets
Debt Securities, Available-for-sale [Line Items]
Equity securities	$ 4,300		$ 4,300		$ 3,400
BeiGene
Debt Securities, Available-for-sale [Line Items]
Ownership percentage	18.00%		18.00%		18.00%
BeiGene | Maximum
Debt Securities, Available-for-sale [Line Items]
Ownership percentage	5.00%	5.00%	5.00%	5.00%

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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