| Document And Entity Information | Aug. 05, 2022 |
| Document And Entity Information [Abstract] | |
| Document Type | 8-K/A |
| Document Period End Date | Aug. 05, 2022 |
| Entity Registrant Name | CHEMED CORPORATION |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 1-8351 |
| Entity Tax Identification Number | 31-0791746 |
| Entity Address, Address Line One | 255 East 5th Street |
| Entity Address, Address Line Two | 2600 First Financial Center |
| Entity Address, City or Town | Cincinnati |
| Entity Address, State or Province | OH |
| Entity Address, Postal Zip Code | 45202 |
| City Area Code | 513 |
| Local Phone Number | 762-6690 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Capital stock $1 par value |
| Trading Symbol | CHE |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0000019584 |
| Amendment Flag | true |
| Amendment Description | The Company is filing this Current Report on Form 8-K/A as Amendment No. 1 to its Current Report on Form 8-K, originally filed with the Securities and Exchange Commission on August 5, 2022, to provide further information regarding the independence and committee appointment of Mr. Mount. At the Board Meeting on November 4, 2022, the Board determined Mr. Mount to be an independent director and appointed him to the Audit Committee. |
