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Pay vs Performance Disclosure | 12 Months Ended
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Dec. 31, 2022 USD ($) $ / shares | Dec. 31, 2021 USD ($) $ / shares | Dec. 31, 2020 USD ($) $ / shares
Pay vs Performance Disclosure [Line Items] |  |  |
Pay vs Performance [Table Text Block] |
|  |  | Average Summary | Average |  |  |  |
| Summary | Compensation | Compensation | Compensation |  | Peer Group |  |
| Compensation | Actually | Table Total | Actually Paid | Total | Total | Net |
| Table for | Paid to | For Non-PEO | Non-PEO | Shareholder | Shareholder | Income | Adjusted
| PEO | PEO | NEOs | NEOs | Return | Return | (000) | EPS
Year | ($) | ($)(1) | ($)(1) | ($)(2) | ($) | ($)(3) | ($)(a) | ($)(b)(4)
2022 | 11,609,033 | 10,125,511 | 3,852,849 | 3,590,451 | 117.23 | 123.58 | 249,624 | 19.91
2021 | 11,659,622 | 13,278,416 | 3,807,705 | 4,473,652 | 121.14 | 152.38 | 268,550 | 20.25
2020 | 11,958,423 | 21,517,491 | 3,723,769 | 6,310,889 | 121.59 | 130.55 | 319,466 | 18.08
(a)U.S. GAAP, as reported. (b)Adjusted Earnings Per Shares as used to calculated key executive incentive compensation, as shown on page 22. |  |
Company Selected Measure Name | Adjusted |  |
PEO Total Compensation Amount | $ 11,609,033 | $ 11,659,622 | $ 11,958,423
PEO Actually Paid Compensation Amount | 10,125,511 | 13,278,416 | 21,517,491
Non-PEO NEO Average Total Compensation Amount | 3,852,849 | 3,807,705 | 3,723,769
Non-PEO NEO Average Compensation Actually Paid Amount | 3,590,451 | 4,473,652 | 6,310,889
Total Shareholder Return Amount | 117.23 | 121.14 | 121.59
Peer Group Total Shareholder Return Amount | 123.58 | 152.38 | 130.55
Net Income (Loss) | $ 249,624 | $ 268,550 | $ 319,466
Company Selected Measure Amount | $ / shares | 19.91 | 20.25 | 18.08
Adjustment To PEO Compensation, Footnote [Text Block] |
PEO | 12/31/2020 | 12/31/2021 | 12/31/2022
Summary Compensation Table Total | $11,958,423 | $11,659,622 | $11,609,033
Aggregate change in the actuarial present value of pension | (44,225) | (39,857) | (31,266)
Actuarially determined service costs of pension | 26,356 | 26,356 | 26,356
Values reported in the stock awards column on |  |  |
Summary Compensation Table | (2,168,162) | (1,893,990) | (2,135,216)
Values reported in the stock options column on |  |  |
Summary Compensation Table | (4,021,813) | (3,566,649) | (3,744,820)
Year-end fair value for stock awards granted in covered fiscal year |  |  |
(outstanding and unvested) | 2,385,977 | 2,987,111 | 2,510,610
Year-end fair value for stock options granted in covered fiscal year |  |  |
(outstanding and unvested) | 4,493,272 | 4,986,266 | 4,944,102
Prior year stock awards fair value (CY vs. PY change only) | 1,142,283 | (1,042,355) | (1,545,245)
Prior year stock options fair value (CY vs. PY change only) | 7,745,380 | 161,912 | (1,508,043)
Total adjustments | 9,559,068 | 1,618,794 | (1,483,522)
Total Compensation Actually Paid | $21,517,491 | $13,278,416 | $10,125,511
Adjustment to Non-PEO NEO Compensation Footnote [Text Block] |
NEO | 12/31/2020 | 12/31/2021 | 12/31/2022
Summary Compensation Table Total | $3,723,769 | $3,807,705 | $3,852,849
Aggregate change in the actuarial present value of pension | (10,131) | (9,130) | (7,162)
Actuarially determined service costs of pension | 6,038 | 6,038 | 6,038
Values reported in the stock awards column on |  |  |
Summary Compensation Table | (554,185) | (479,222) | (545,942)
Values reported in the stock options column on |  |  |
Summary Compensation Table | (1,222,280) | (1,347,630) | (1,409,987)
Year-end fair value for stock awards granted in covered fiscal year |  |  |
(outstanding and unvested) | 609,859 | 755,806 | 641,924
Year-end fair value for stock options granted in covered fiscal year |  |  |
(outstanding and unvested) | 1,365,563 | 1,884,025 | 1,861,536
Prior year stock awards fair value (CY vs. PY change only) | 234,760 | (189,503) | (391,251)
Prior year stock options fair value (CY vs. PY change only) | 2,157,496 | 45,563 | (417,554)
Total adjustments | 2,587,120 | 665,947 | (262,398)
Total Compensation Actually Paid | $6,310,889 | $4,473,652 | $3,590,451
Peer Group Issuers, Footnote [Text Block] |
ABM Industries, Inc. |  | Pediatrix Medical Group
Acadia Healthcare Co., Inc. |  | (formerly MEDNAX, INC.)
Amedisys, Inc. |  | RadNet, Inc.
Brookdale Senior Living, Inc. |  | Rollins, Inc.
Clean Harbors, Inc. |  | Select Medical Holdings Corp.
Comfort Systems USA, Inc. |  | Stericycle, inc.
Encompass Health Corp. |  | Team, Inc.
Healthcare Services Group, Inc. |  | Tetra Tech, Inc.
LHC Group, Inc. |  | The Ensign Group, Inc.
National Healthcare Corp. |  |
Named Executive Officers, Footnote [Text Block] |
Named Executive Officers | Years Included
Kevin J. McNamara (PEO) | 2020-2022
David P. Williams | 2020-2022
Nicholas M. Westfall | 2020-2022
Spencer S. Lee | 2020-2022
Michael D. Witzeman | 2020-2022
Compensation Actually Paid vs. Total Shareholder Return [Text Block] | RELATIONSHIP BETWEEN PAY AND PERFORMANCE Below is a graph showing the relationship of Compensation Actually Paid to our Chief Executive Officer and other named excecutive officers in 2020, 2021, and 2022 to the TSR of Chemed Corporation, the S&P 500 and the Dow Jones Diversified Industrials. Compensation Actually Paid as required under SEC rules, reflects adjusted values to unvested and vested equity awards during the years shown in the table based on year-end stock prices, various accounting valuations assumptions and projected performance modifers but does not reflect actual amounts paid for those awards. . |  |
Tabular List [Table Text Block] |
Measure | Explanation
Adjusted Earnings Per Share | A non-GAAP measure that consists of diluted net income per share that is then adjusted to eliminate the effect of certain items that the Compensation Committee determines in its discretion should be excluded for compensation purposes.
Total Stockholder Return | A measure of financial performance, indicating the total amount a stockholder earns from an investment in the Company. Based on the change in stock price over a given period of time, and assuming the reinvestment of dividends.
Return on Assets | A financial ratio that indicates how profitable the Company is in relation to its total assets.
PEO Name | Kevin J. McNamara |  |
PEO [Member] |  |  |
Pay vs Performance Disclosure [Line Items] |  |  |
Adjustment to Compensation Amount | $ (1,483,522) | $ 1,618,794 | $ 9,559,068
PEO [Member] | Aggregate Change in Actuarial Present Value of Pension [Member] |  |  |
Pay vs Performance Disclosure [Line Items] |  |  |
Adjustment to Compensation Amount | (31,266) | (39,857) | (44,225)
PEO [Member] | Actuarially Determined Service Costs of Pension [Member] |  |  |
Pay vs Performance Disclosure [Line Items] |  |  |
Adjustment to Compensation Amount | 26,356 | 26,356 | 26,356
PEO [Member] | Values Reported in Stock Awards Column on Summary Compensation Table [Member] |  |  |
Pay vs Performance Disclosure [Line Items] |  |  |
Adjustment to Compensation Amount | (2,135,216) | (1,893,990) | (2,168,162)
PEO [Member] | Values Reported in Stock Options Column on Summary Compensation Table [Member] |  |  |
Pay vs Performance Disclosure [Line Items] |  |  |
Adjustment to Compensation Amount | (3,744,820) | (3,566,649) | (4,021,813)
PEO [Member] | Year-End Fair Value for Stock Awards Granted in Covered Fiscal Year (Outstanding and Unvested) [Member] |  |  |
Pay vs Performance Disclosure [Line Items] |  |  |
Adjustment to Compensation Amount | 2,510,610 | 2,987,111 | 2,385,977
PEO [Member] | Year-End Fair Value for Stock Options Granted in Covered Fiscal Year (Outstanding and Unvested) [Member] |  |  |
Pay vs Performance Disclosure [Line Items] |  |  |
Adjustment to Compensation Amount | 4,944,102 | 4,986,266 | 4,493,272
PEO [Member] | Prior Year Stock Awards Fair Value [Member] |  |  |
Pay vs Performance Disclosure [Line Items] |  |  |
Adjustment to Compensation Amount | (1,545,245) | (1,042,355) | 1,142,283
PEO [Member] | Prior Year Stock Options Fair Value [Member] |  |  |
Pay vs Performance Disclosure [Line Items] |  |  |
Adjustment to Compensation Amount | (1,508,043) | 161,912 | 7,745,380
Non-PEO NEO [Member] |  |  |
Pay vs Performance Disclosure [Line Items] |  |  |
Adjustment to Compensation Amount | (262,398) | 665,947 | 2,587,120
Non-PEO NEO [Member] | Aggregate Change in Actuarial Present Value of Pension [Member] |  |  |
Pay vs Performance Disclosure [Line Items] |  |  |
Adjustment to Compensation Amount | (7,162) | (9,130) | (10,131)
Non-PEO NEO [Member] | Actuarially Determined Service Costs of Pension [Member] |  |  |
Pay vs Performance Disclosure [Line Items] |  |  |
Adjustment to Compensation Amount | 6,038 | 6,038 | 6,038
Non-PEO NEO [Member] | Values Reported in Stock Awards Column on Summary Compensation Table [Member] |  |  |
Pay vs Performance Disclosure [Line Items] |  |  |
Adjustment to Compensation Amount | (545,942) | (479,222) | (554,185)
Non-PEO NEO [Member] | Values Reported in Stock Options Column on Summary Compensation Table [Member] |  |  |
Pay vs Performance Disclosure [Line Items] |  |  |
Adjustment to Compensation Amount | (1,409,987) | (1,347,630) | (1,222,280)
Non-PEO NEO [Member] | Year-End Fair Value for Stock Awards Granted in Covered Fiscal Year (Outstanding and Unvested) [Member] |  |  |
Pay vs Performance Disclosure [Line Items] |  |  |
Adjustment to Compensation Amount | 641,924 | 755,806 | 609,859
Non-PEO NEO [Member] | Year-End Fair Value for Stock Options Granted in Covered Fiscal Year (Outstanding and Unvested) [Member] |  |  |
Pay vs Performance Disclosure [Line Items] |  |  |
Adjustment to Compensation Amount | 1,861,536 | 1,884,025 | 1,365,563
Non-PEO NEO [Member] | Prior Year Stock Awards Fair Value [Member] |  |  |
Pay vs Performance Disclosure [Line Items] |  |  |
Adjustment to Compensation Amount | (391,251) | (189,503) | 234,760
Non-PEO NEO [Member] | Prior Year Stock Options Fair Value [Member] |  |  |
Pay vs Performance Disclosure [Line Items] |  |  |
Adjustment to Compensation Amount | $ (417,554) | $ 45,563 | $ 2,157,496

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