COVER - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	May 03, 2023	Jun. 30, 2022
Cover [Abstract]
Document Type	10-K/A
Amendment Flag	true
Amendment Description	SmartRent, Inc. (“we,” “us,” or “our”) is filing this Amendment No. 1 on Form 10-K/A (the “Amendment”) in order to amend and restate certain items of our Annual Report on Form 10-K for the fiscal year ended December 31, 2022, originally filed March 8, 2023 (the “Original 10-K”), to provide amended disclosures pursuant to correspondence with the staff (the “Staff”) of the Securities and Exchange Commission (“SEC”) in connection with the Staff’s review of the Original 10-K. Part II. Item 9A of the Original 10-K is hereby amended and restated in its entirety as set forth below. We are also including currently dated certifications by our principal executive officer and principal financial officer as Exhibits 31.1 and 31.2 under Section 302 of the Sarbanes-Oxley Act of 2002, as required by Rule 12b-15 under the Securities Exchange Act of 1934, as amended (the “Section 302 Certifications”). Because no financial statements are contained within this Amendment, paragraph 3 of the Section 302 Certifications has been omitted. Other than as expressly set forth above, this Amendment does not, and does not purport to, update or restate the information in the Original 10-K or reflect any events that have occurred after the Original 10-K. Moreover, the information in this Amendment does not update or otherwise affect the financial statements filed as part of the Original 10-K. This Amendment should be read in conjunction with the Original 10-K and our other filings with the SEC. The filing of this Amendment is not an admission that the Original 10-K, when filed, included any untrue statement of a material fact or omitted to state a material fact necessary to make a statement not misleading.
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2022
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0001837014
Securities Act File Number	001-39991
Entity Registrant Name	SMARTRENT, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	85-4218526
Entity Address, Address Line One	8665 E. Hartford Drive
Entity Address, Address Line Two	Suite 200
Entity Address, City or Town	Scottsdale
Entity Address, State or Province	AZ
Entity Address, Postal Zip Code	85255
City Area Code	844
Local Phone Number	479-1555
Title of 12(b) Security	Class A Common Stock, $0.0001 par value
Trading Symbol	SMRT
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
ICFR Auditor Attestation Flag	false
Entity Shell Company	false
Entity Public Float			$ 569.4
Entity Common Stock, Shares Outstanding		199,459,444
Auditor Firm ID	34
Auditor Name	Deloitte & Touche LLP
Auditor Location	Tempe, AZ