Segment Reporting - Schedule of Equity Income from Affiliates and Depreciation Included in Segment Profits (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Segment Reporting [Line Items]
Depreciation			$ 1,180	$ 1,020
Operating Segments
Segment Reporting [Line Items]
Equity income from affiliates	$ 29	$ 29	92	86
Depreciation	85	63	176	124
Operating Segments \| Pharma- ceutical
Segment Reporting [Line Items]
Equity income from affiliates	29	29	92	86
Depreciation	1	1	2	2
Operating Segments \| Animal Health
Segment Reporting [Line Items]
Equity income from affiliates	0	0	0	0
Depreciation	$ 84	$ 62	$ 174	$ 122

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

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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+ Details