Acquisitions, Goodwill, and Intangible Assets - Schedule of Change in Goodwill (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Goodwill [Roll Forward]
Goodwill beginning of period		$ 19,197	$ 19,050
Acquisitions		1,137
Adjustments		(28)
Goodwill end of period	$ 19,197	20,306	19,197
Goodwill Before Allocation
Goodwill [Roll Forward]
Acquisitions			210
Adjustments/transfer			(191)
Effect of currency translation adjustment			(4)
Goodwill After Allocation
Goodwill [Roll Forward]
Acquisitions	128
Effect of currency translation adjustment	4
Segment allocation in the fourth quarter of 2021	19,065
Family of Apps
Goodwill [Roll Forward]
Goodwill beginning of period		18,458
Acquisitions		773
Adjustments		19
Goodwill end of period	18,458	19,250	18,458
Family of Apps | Goodwill After Allocation
Goodwill [Roll Forward]
Acquisitions	0
Effect of currency translation adjustment	3
Segment allocation in the fourth quarter of 2021	18,455
Reality Labs
Goodwill [Roll Forward]
Goodwill beginning of period		739
Acquisitions		364
Adjustments		(47)
Goodwill end of period	739	$ 1,056	$ 739
Reality Labs | Goodwill After Allocation
Goodwill [Roll Forward]
Acquisitions	128
Effect of currency translation adjustment	1
Segment allocation in the fourth quarter of 2021	$ 610