Restructuring Plans - Streamline of Operations and Improve Efficiencies (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2022	Dec. 31, 2021
COVID-19 Test Manufacturing Network Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges recorded in 2021	$ 499		$ 441
Payments			(90)
Other non-cash			(328)
Restructuring Reserve [Roll Forward]
Accrued balance at beginning of the period		$ 23
Payments and other adjustments		(10)
Accrued balance at end of the period		13	23
COVID-19 Test Manufacturing Network Restructuring Plan | Inventory- Related Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges recorded in 2021	248		248
Payments			0
Other non-cash			(248)
Restructuring Reserve [Roll Forward]
Accrued balance at beginning of the period		0
Payments and other adjustments		0
Accrued balance at end of the period		0	0
COVID-19 Test Manufacturing Network Restructuring Plan | Fixed Asset Write-Downs
Restructuring Cost and Reserve [Line Items]
Restructuring charges recorded in 2021	80		80
Payments			0
Other non-cash			(80)
Restructuring Reserve [Roll Forward]
Accrued balance at beginning of the period		0
Payments and other adjustments		0
Accrued balance at end of the period		0	0
COVID-19 Test Manufacturing Network Restructuring Plan | Other Exit Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges recorded in 2021	$ 171		113
Payments			(90)
Other non-cash			0
Restructuring Reserve [Roll Forward]
Accrued balance at beginning of the period		23
Payments and other adjustments		(10)
Accrued balance at end of the period		13	23
Restructuring Plan 2021, Streamline of Operations and Improve Efficiencies
Restructuring Cost and Reserve [Line Items]
Restructuring charges recorded in 2021			68
Restructuring Reserve [Roll Forward]
Accrued balance at beginning of the period		61
Payments and other adjustments		(30)	(7)
Accrued balance at end of the period		$ 31	$ 61