Goodwill and Other Intangible Assets, Net (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill and Intangible Assets [Line Items]
Other intangibles impairment charge	$ 4.6	$ (8.2)	$ (4.2)	$ (9.1)
Goodwill impairment loss		(1.3)	157.9	570.8
Deferred tax benefit as result of impairment charges			37.0	141.5
Home Health [Member]
Goodwill and Intangible Assets [Line Items]
Goodwill impairment loss		(1.3)	(157.9)	(570.8)
Hospice [Member]
Goodwill and Intangible Assets [Line Items]
Goodwill impairment loss		0	0	0
Equity Method Investments [Member]
Goodwill and Intangible Assets [Line Items]
Other intangibles impairment charge			3.1
Goodwill impairment loss		1.3	17.4
Care Centers Closed Or Consolidated [Member]
Goodwill and Intangible Assets [Line Items]
Other intangibles impairment charge		$ 3.6