Commitments and Contingencies (Detail)		1 Months Ended			2 Months Ended	3 Months Ended	5 Months Ended			7 Months Ended	8 Months Ended	10 Months Ended	22 Months Ended	27 Months Ended
	Mar. 02, 2015 Computers Residents	Jan. 18, 2016 USD ($) Claims	Apr. 30, 2014 Agencies	Jan. 31, 2014 Claims	Mar. 09, 2011 USD ($) Claims	Mar. 31, 2016 USD ($) Agencies	Jun. 10, 2015 USD ($)	May. 21, 2015	Jun. 06, 2011 Beneficiary	Jul. 25, 2012 Employee	Sep. 13, 2012 Employee	Nov. 03, 2015	Nov. 10, 2009 Claims	Mar. 31, 2010 Beneficiary	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)
Commitments and Contingencies Disclosure [Line Items]
Health insurance retention limit						$ 900,000
Workers' compensation insurance retention limit						500,000
Professional liability insurance retention limit						$ 300,000
Corporate Integrity Agreement Term						5 years
Number Of States With Facilities | Agencies						34
Wage and Hour Litigation [Member]
Commitments and Contingencies Disclosure [Line Items]
Loss Contingency, Settlement Agreement, Consideration							$ 8,000,000
Loss Contingency Accrual, at Carrying Value															$ 5,300,000	$ 8,000,000
Wage and Hour Litigation [Member] | Illinois [Member]
Commitments and Contingencies Disclosure [Line Items]
Number of former employees who filled a putative collective and class action complaint | Employee											1
Loss Contingency Accrual						$ 800,000
Wage and Hour Litigation [Member] | Connecticut [Member]
Commitments and Contingencies Disclosure [Line Items]
Number of former employees who filled a putative collective and class action complaint | Employee										3
OIG Self-Disclosure [Member]
Commitments and Contingencies Disclosure [Line Items]
Loss Contingency Accrual						$ 4,700,000
Computer Inventory And Data Security Reporting [Member]
Commitments and Contingencies Disclosure [Line Items]
Number of Missing Computers and Laptops | Computers	142
Threshold of Individuals in Data Breach | Residents	500
Computer Inventory And Data Security Reporting [Member] | Minimum [Member]
Commitments and Contingencies Disclosure [Line Items]
Year of Departure	2011
Computer Inventory And Data Security Reporting [Member] | Maximum [Member]
Commitments and Contingencies Disclosure [Line Items]
Year of Departure	2014
Home Health [Member] | Ohio [Member]
Commitments and Contingencies Disclosure [Line Items]
Number of claims submitted by subsidiary | Claims													137
Home Health [Member] | Extrapolated [Member] | Ohio [Member]
Commitments and Contingencies Disclosure [Line Items]
Number of claims submitted by subsidiary | Claims					114
Recovery amount of the overpayment made to the subsidiary					$ 5,600,000
Home Health [Member] | Unfavorable [Member] | Ohio [Member]
Commitments and Contingencies Disclosure [Line Items]
Number of claims submitted by subsidiary | Claims				28
Home Health [Member] | Favorable In Full [Member] | Ohio [Member]
Commitments and Contingencies Disclosure [Line Items]
Number of claims submitted by subsidiary | Claims				76
Number of claims appealed | Claims				74
Home Health [Member] | Favorable In Part [Member] | Ohio [Member]
Commitments and Contingencies Disclosure [Line Items]
Number of claims submitted by subsidiary | Claims				10
Number of claims appealed | Claims				8
Home Health [Member] | Frontier Litigation [Member]
Commitments and Contingencies Disclosure [Line Items]
Number Of Care Centers Sold | Agencies			5
Hospice [Member] | South Carolina [Member]
Commitments and Contingencies Disclosure [Line Items]
Number of beneficiaries | Beneficiary														30
Hospice [Member] | Extrapolated [Member] | South Carolina [Member]
Commitments and Contingencies Disclosure [Line Items]
Number of beneficiaries | Beneficiary									16
Hospice [Member] | Unfavorable [Member] | South Carolina [Member]
Commitments and Contingencies Disclosure [Line Items]
Number of claims submitted by subsidiary | Claims		9
Recovery amount of the overpayment made to the subsidiary		$ 3,700,000
Recovery Amount Of Over Payment Made To Subsidiary Including Interest		$ 5,600,000
Hospice [Member] | Frontier Litigation [Member]
Commitments and Contingencies Disclosure [Line Items]
Number Of Care Centers Sold | Agencies			4
Hospice [Member] | U.S. Department of Justice [Member] | Massachusetts [Member]
Commitments and Contingencies Disclosure [Line Items]
Number of patients								53
Hospice [Member] | U.S. Department of Justice [Member] | West Virginia [Member]
Commitments and Contingencies Disclosure [Line Items]
Number of patients												66