Investments in and Advances to Nonconsolidated Affiliates - Tables 2 & 3 (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Assets-
Current	$ 7.8	$ 9.6
Noncurrent	20.5	13.1
Total assets	28.3	22.7
Liabilities and equity-
Current liabilities	1.4	0.7
Noncurrent liabilities	0.1	0.1
Partners' capital and shareholders' equity-
HealthSouth	11.4	8.2
Outside partners	15.4	13.7
Total liabilities and equity	28.3	22.7
Combined Statements of Operations of Equity Method Affiliates
Net operating revenues	36.5	50.2	$ 74.3
Operating expenses	(15.0)	(25.9)	(43.6)
Income from continuing operations, net of tax	18.9	30.9	24.6
Net income	$ 18.9	$ 30.9	$ 24.6