Goodwill and Other Intangible Assets, Net (Detail) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Goodwill and Intangible Assets [Line Items] | |||
| Other intangibles impairment charge | $ 0.0 | $ (3.1) | $ (8.2) |
| Goodwill impairment loss | 0.0 | (1.3) | |
| Home Health [Member] | |||
| Goodwill and Intangible Assets [Line Items] | |||
| Goodwill impairment loss | 0.0 | (1.3) | |
| Hospice [Member] | |||
| Goodwill and Intangible Assets [Line Items] | |||
| Goodwill impairment loss | 0.0 | 0.0 | |
| Equity Method Investments [Member] | |||
| Goodwill and Intangible Assets [Line Items] | |||
| Goodwill impairment loss | 1.3 | ||
| Care Centers Closed Or Consolidated [Member] | |||
| Goodwill and Intangible Assets [Line Items] | |||
| Other intangibles impairment charge | 2.2 | 3.6 | |
| Annual Impairment Test Step One [Member] | |||
| Goodwill and Intangible Assets [Line Items] | |||
| Other intangibles impairment charge | $ 0.9 | $ 4.6 | |