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Segment Reporting - Schedule of Equity Income from Affiliates and Depreciation Included in Segment Profits (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting Information [Line Items]
Depreciation			$ 1,552	$ 1,582
Operating Segments
Segment Reporting Information [Line Items]
Equity income from affiliates	$ 62	$ 43	148	121
Depreciation	83	86	207	214
Operating Segments | Pharma- ceutical
Segment Reporting Information [Line Items]
Equity income from affiliates	62	43	148	121
Depreciation	1	1	4	3
Operating Segments | Animal Health
Segment Reporting Information [Line Items]
Equity income from affiliates	0	0	0	0
Depreciation	$ 82	$ 85	$ 203	$ 211

X

- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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