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Restructuring - Narrative (Details) $ in Millions	1 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended
Restructuring - Narrative (Details) $ in Millions	Mar. 31, 2023 notice	Sep. 30, 2023 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2022 USD ($) employee
2022 Restructuring
Restructuring Cost and Reserve [Line Items]
Expected number of positions eliminated \| employee				11,000
Restructuring charges		$ 344	$ 1,148
Restructuring charges recorded to date		5,760	5,760
2022 Restructuring \| Severance and Other Personnel Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges		4	(26)	$ 975
Restructuring charges recorded to date		949	949
2022 Restructuring \| Leases and Leasehold Improvements
Restructuring Cost and Reserve [Line Items]
Restructuring charges		352	1,406
Restructuring charges recorded to date		3,700	3,700
2022 Restructuring \| Data Center Assets
Restructuring Cost and Reserve [Line Items]
Restructuring charges		(12)	(232)
Restructuring charges recorded to date		1,110	1,110
2023 Restructuring
Restructuring Cost and Reserve [Line Items]
Expected number of positions eliminated \| notice	10,000
2023 Restructuring \| Severance and Other Personnel Costs
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs		1,200	1,200
Restructuring charges		36	1,155
Family of Apps \| 2022 Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring charges recorded to date		4,960	4,960
Family of Apps \| 2023 Restructuring \| Severance and Other Personnel Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges		37	1,070
Reality Labs \| 2022 Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring charges recorded to date		$ 794	$ 794