Segment Information - Segment Information of Revenue and Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting Information [Line Items]
Revenue	$ 47,516	$ 39,071	$ 89,830	$ 75,527
Employee compensation	(11,859)	(10,346)	(23,667)	(20,250)
Other costs and expenses	(15,216)	(13,878)	(28,166)	(26,612)
Income (loss) from operations	20,441	14,847	37,997	28,665
Family of Apps
Segment Reporting Information [Line Items]
Revenue	47,146	38,718	89,048	74,734
Employee compensation	(9,336)	(7,746)	(18,366)	(15,192)
Other costs and expenses	(12,839)	(11,637)	(23,946)	(22,543)
Income (loss) from operations	24,971	19,335	46,736	36,999
Reality Labs
Segment Reporting Information [Line Items]
Revenue	370	353	782	793
Employee compensation	(2,523)	(2,600)	(5,301)	(5,058)
Other costs and expenses	(2,377)	(2,241)	(4,220)	(4,069)
Income (loss) from operations	$ (4,530)	$ (4,488)	$ (8,739)	$ (8,334)