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Acquisitions (Narrative) (Details) $ in Millions |  |  | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Aug. 02, 2019 USD ($) | Jul. 01, 2019 USD ($) | Sep. 30, 2019 | Sep. 30, 2019 | Dec. 31, 2018 USD ($) item
Reacquired Franchise Rights [Member] |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Average amortization period |  |  | 7 years 4 months 24 days |  |
Customer Relationships [Member] |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Average amortization period |  |  | 20 years 4 months 24 days |  |
Non-Compete Agreements [Member] |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Average amortization period |  |  | 4 years |  |
Roto-Rooter, Oakland [Member] |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Acquisition date |  |  |  | Jul. 01, 2019 |
Business combination cost |  | $ 18.0 |  |  |
Roto-Rooter [Member] |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Number of completed business combinations | item |  |  |  |  | 4
Business combination cost |  |  |  |  | $ 42.2
Roto-Rooter [Member] | HSW RR, Inc [Member] |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Business combination cost | $ 120.0 |  |  |  |
VITAS [Member] |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Number of completed business combinations | item |  |  |  |  | 1
Business combination cost |  |  |  |  | $ 11.0
Revolving Credit Facility [Member] |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Borrowing amount | $ 450.0 |  |  |  |

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