Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 468	$ 170
Other comprehensive income, net of tax
Net unrealized losses on available-for-sale marketable securities [net of tax benefit of $2 and $7, respectively]	(8)	(26)
Other comprehensive loss	(8)	(26)
Comprehensive income	$ 460	$ 144