Restructuring Plans - Summary of Restructuring Activity Related to COVID-19 (Details) - COVID-19 Test Manufacturing Network Restructuring Plan - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 441
Payments	$ (13)	$ (10)	(90)
Other non-cash			(328)
Restructuring Reserve [Roll Forward]
Accrued balance, beginning	13	23
Payments and other adjustments	(13)	(10)	(90)
Accrued balance, ending	0	13	23
Inventory- Related Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges			248
Payments	0	0	0
Other non-cash			(248)
Restructuring Reserve [Roll Forward]
Accrued balance, beginning	0	0
Payments and other adjustments	0	0	0
Accrued balance, ending	0	0	0
Fixed Asset Write-Downs
Restructuring Cost and Reserve [Line Items]
Restructuring charges			80
Payments	0	0	0
Other non-cash			(80)
Restructuring Reserve [Roll Forward]
Accrued balance, beginning	0	0
Payments and other adjustments	0	0	0
Accrued balance, ending	0	0	0
Other Exit Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges			113
Payments	(13)	(10)	(90)
Other non-cash			0
Restructuring Reserve [Roll Forward]
Accrued balance, beginning	13	23
Payments and other adjustments	(13)	(10)	(90)
Accrued balance, ending	$ 0	$ 13	$ 23