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Acquisitions (Detail) (USD $)
In Millions, unless otherwise specified
2 Months Ended 7 Months Ended 4 Months Ended
Sep. 30, 2012
Equity Method Investments [Member]
Feb. 11, 2013
Alabama [Member]
Mar. 07, 2013
North Carolina [Member]
Aug. 06, 2012
North Carolina [Member]
Mar. 07, 2013
North Carolina [Member]
Hospice [Member]
Agencies
Aug. 06, 2012
North Carolina [Member]
Hospice [Member]
Agencies
Nov. 04, 2013
West Virginia [Member]
May 01, 2012
Louisiana [Member]
May 01, 2012
Louisiana [Member]
Home Health [Member]
Agencies
May 01, 2012
Louisiana [Member]
Hospice [Member]
Agencies
Jun. 01, 2012
Florida [Member]
In House Physicians Practice [Member]
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]                      
Acquisition, total purchase price   $ 0.3 $ 0.3 $ 5.8     $ 1.0 $ 6.4     $ 2.0
Acquisition, number of care centers acquired         1 5     1 4  
Acquisition, goodwill recorded 18.7 0.1 0.1 5.5     0.8 6.0     1.9
Acquisition, other intangibles recorded 3.1 0.2 0.2 0.3     0.2 0.5     0.1
Acquisition, recorded other assets and liabilities 7.5             0.1      
Accrued liability resulting from acquisition       3.8              
Accrued liability paid to seller       3.8              
Acquisition, cash recorded 1.6                    
Acquisition, non-controlling interest $ 15.9                    
Percentage of Joint Venture Acquired   66.70%         80.00%