Other Balance Sheet Components

3 Months Ended

Mar. 31, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Other Balance Sheet Components

Other Balance Sheet Components

Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets, as of March 31, 2021 and December 31, 2020 consists of the following (in millions):

	March 31,		December 31,
	2021		2020
Down payments to manufacturing vendors	$	224	$	217
Other prepaid expenses	22		16
Tenant incentives receivables	10		10
Interest receivable on marketable securities	8		9
Prepaid expenses and other current assets	$	264	$	252

Accrued Liabilities

Accrued liabilities, as of March 31, 2021 and December 31, 2020 consists of the following (in millions):

	March 31,		December 31,
	2021		2020
Clinical trials	$	181	$	98
Raw materials	185		78
Royalties	84		—
Development operations	71		29
Manufacturing	119		53
Other external goods and services	58		92
Compensation-related	33		95
Property and equipment	17		18
Commercial	5		7
Accrued liabilities	$	753	$	470

Deferred Revenue

The following table summarizes the activities in deferred revenue for the three months ended March 31, 2021 (in millions):

	December 31, 2020		Additions		Deductions		March 31, 2021
Product sales	$	3,799	$	4,467	$	(796)	$	7,470
Grant revenue	5		2		(2)		5
Collaboration revenue	240		5		(10)		235
Total deferred liabilities	$	4,044	$	4,474	$	(808)	$	7,710