CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income:	$ 480	$ 5,613	$ 4,566
Other comprehensive income (loss), net of reclassifications and taxes:
Net (loss) gain on foreign currency translation	(26)	60	(11)
Net gain (loss) on available-for-sale debt securities	5	28	(29)
Net gain (loss) on cash flow hedges	125	(62)	(41)
Other comprehensive income (loss), net	104	26	(81)
Comprehensive income, net	584	5,639	4,485
Comprehensive loss attributable to noncontrolling interest, net	0	(52)	(26)
Comprehensive income attributable to Gilead, net	$ 584	$ 5,691	$ 4,511