Summary of Restructuring Liability Activity Included in Other Accrued Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Restructuring Cost And Reserve [Line Items]
Expense	$ 81,463	$ 3,349	$ 88,223	$ 8,793
Home Health And Hospice | Severance Costs
Restructuring Cost And Reserve [Line Items]
Liability balance at January 1, 2016			1,863
Expense			2,494
Payments			(1,771)
Adjustments			(60)
Liability balance at September 30, 2016	$ 2,526		$ 2,526