Acquisitions, Divestitures and Strategic Investments - Level 3 Contingent Consideration (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Business Combination [Line Items]
Fair value of contingent consideration	$ 367	$ 171
Revenue-based Payments and Commercialization Milestones | Discount Rate
Business Combination [Line Items]
Fair value of contingent consideration	$ 129
Revenue-based Payments and Commercialization Milestones | Discount Rate | Minimum
Business Combination [Line Items]
Risk-Adjusted Discount Rates used in Purchase Price Allocation	6.00%
Probability of Payment	30.00%
Revenue-based Payments and Commercialization Milestones | Discount Rate | Maximum
Business Combination [Line Items]
Risk-Adjusted Discount Rates used in Purchase Price Allocation	15.00%
Probability of Payment	100.00%
Revenue-based Payments and Commercialization Milestones | Discount Rate | Weighted Average
Business Combination [Line Items]
Risk-Adjusted Discount Rates used in Purchase Price Allocation	9.00%
Probability of Payment	95.00%
Clinical-based, Regulatory and Other Milestones | Discount Rate
Business Combination [Line Items]
Fair value of contingent consideration	$ 238
Clinical-based, Regulatory and Other Milestones | Discount Rate | Minimum
Business Combination [Line Items]
Risk-Adjusted Discount Rates used in Purchase Price Allocation	4.00%
Probability of Payment	74.00%
Clinical-based, Regulatory and Other Milestones | Discount Rate | Maximum
Business Combination [Line Items]
Risk-Adjusted Discount Rates used in Purchase Price Allocation	5.00%
Probability of Payment	86.00%
Clinical-based, Regulatory and Other Milestones | Discount Rate | Weighted Average
Business Combination [Line Items]
Risk-Adjusted Discount Rates used in Purchase Price Allocation	5.00%
Probability of Payment	80.00%