| Cover | Feb. 14, 2023 |
| Entity Addresses [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Feb. 14, 2023 |
| Current Fiscal Year End Date | --12-31 |
| Entity File Number | 001-41090 |
| Entity Registrant Name | SOUTHLAND HOLDINGS, INC. |
| Entity Central Index Key | 0001883814 |
| Entity Tax Identification Number | 87-1783910 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 1100 Kubota Drive |
| Entity Address, City or Town | Grapevine |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 76051 |
| City Area Code | (817) |
| Local Phone Number | 293-4263 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| Common stock, par value $0.0001 per share | |
| Entity Addresses [Line Items] | |
| Title of 12(b) Security | Common stock, par value $0.0001 per share |
| Trading Symbol | SLND |
| Security Exchange Name | NASDAQ |
| Redeemable warrants, exercisable for shares of common stock at an exercise price of $11.50 per share | |
| Entity Addresses [Line Items] | |
| Title of 12(b) Security | Redeemable warrants, exercisable for shares of common stock at an exercise price of $11.50 per share |
| Trading Symbol | SLNDW |
| Security Exchange Name | NASDAQ |
| Former Address [Member] | |
| Entity Addresses [Line Items] | |
| Entity Address, Address Line One | 777 Third Avenue |
| Entity Address, Address Line Two | 37th Floor |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10017 |
| Entity Information, Former Legal or Registered Name | LEGATO MERGER CORP. II |
