Revenues (Tables)

6 Months Ended

Jun. 30, 2023

Revenue from Contract with Customer [Abstract]

Summary of Revenues by Collaboration, Category of Revenue and Method of Recognition

The following table summarizes our revenues by collaboration, category of revenue, and the method of recognition (in millions):

			Three Months Ended June 30,				Six Months Ended June 30,
	Over time	Point in time	2023		2022		2023		2022
Gilead Collaboration
License and R&D services	*		$	20	$	17	$	37	$	25
Access rights	*			9		9		17		17
Taiho Collaboration
Access rights	*			-		1		-		3
Total revenues			$	29	$	27	$	54	$	45

Summary of Revenue Recognized as a Result of Changes in Deferred Revenue

The following table summarizes the revenue recognized as a result of changes in the deferred revenue balance (in millions):

	Three Months Ended June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
Revenue recognized from amounts included in deferred revenue at the beginning of the period	$	28	$	27	$	53	$	45

Summary of Transaction Price and Allocation of Transaction Price to the Performance Obligations

The following table summarizes the allocation of the transaction price to the distinct performance obligations (in millions):

Allocation to performance obligations	Distinct	Amount
Inflammation target 1	*	$	18
Inflammation target 2	*		17
Total allocated transaction price		$	35