| Cover Page Document | Jan. 23, 2020 |
| Cover page. | |
| Entity Central Index Key | 0000109563 |
| Document Type | 8-K |
| Document Period End Date | Jan. 23, 2020 |
| Entity Registrant Name | APPLIED INDUSTRIAL TECHNOLOGIES, INC. |
| Entity Incorporation, State or Country Code | OH |
| Entity File Number | 1-2299 |
| Entity Tax Identification Number | 34-0117420 |
| Entity Address, Address Line One | One Applied Plaza |
| Entity Address, City or Town | Cleveland |
| Entity Address, State or Province | OH |
| Entity Address, Postal Zip Code | 44115 |
| City Area Code | 216 |
| Local Phone Number | 426-4000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, without par value |
| Trading Symbol | AIT |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Amendment Flag | false |
