Revenue - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($) segment	Mar. 31, 2023 USD ($) segment
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Number of reportable segments | segment	4	4
Sales	$ 9,964	$ 9,747
Diagnostics
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations	4,500
Diagnostics | COVID-19 Testing
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Sales	204	$ 730
Medical Devices
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations	$ 495
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Percentage of remaining performance obligation expected to be recognized in period	59.00%
Expected timing of satisfaction period (in months)	24 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Percentage of remaining performance obligation expected to be recognized in period	16.00%
Expected timing of satisfaction period (in months)	12 months