Revenue - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2025 USD ($) segment	Dec. 31, 2024 USD ($) segment	Dec. 31, 2023 USD ($) segment
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Number of reportable segments | segment	4	4	4
Sales	$ 44,328	$ 41,950	$ 40,109
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Percentage of remaining performance obligation expected to be recognized in period	52.00%
Expected timing of satisfaction period (in months)	24 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Percentage of remaining performance obligation expected to be recognized in period	17.00%
Expected timing of satisfaction period (in months)	12 months
Diagnostics
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations	$ 6,100
Diagnostics | COVID-19 Testing
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Sales	297	$ 747	$ 1,600
Medical Devices
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations	$ 444
Minimum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Settlement period of rebate after sale	1 month
Period cash discounts are known after sale	15 days
Minimum | Capitalized Commission Fees
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Amortization period	2 years
Minimum | Capitalized Transmitter Costs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Amortization period	8 years
Maximum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Settlement period of rebate after sale	6 months
Period cash discounts are known after sale	30 days
Maximum | Capitalized Commission Fees
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Amortization period	10 years
Maximum | Capitalized Transmitter Costs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Amortization period	10 years