Acquisitions (Narrative) (Details) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2019 item	Dec. 31, 2018 USD ($) item
Roto-Rooter And Vitas [Member]
Goodwill [Line Items]
Number of completed business combinations	0
Roto-Rooter [Member]
Goodwill [Line Items]
Number of completed business combinations		4
Business combination cost | $		$ 42.2
VITAS [Member]
Goodwill [Line Items]
Number of completed business combinations		1
Business combination cost | $		$ 11.0