| Document and Entity Information | Nov. 16, 2021 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001820721 |
| Document Type | 8-K |
| Document Period End Date | Nov. 16, 2021 |
| Entity Registrant Name | ARRAY TECHNOLOGIES, INC. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-39613 |
| Entity Tax Identification Number | 83-2747826 |
| Entity Address, Address Line One | 3901 Midway Place NE |
| Entity Address, City or Town | Albuquerque |
| Entity Address, State or Province | NM |
| Entity Address, Postal Zip Code | 87109 |
| City Area Code | (505) |
| Local Phone Number | 881-7567 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock, $0.001 Par Value |
| Trading Symbol | ARRY |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
