Condensed Consolidated Statements of Shareholders' Equity (Unaudited) (USD $) In Millions	Total	Common Stock	Capital in Excess of Par Value	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Noncontrolling Interests
Balance at beginning of period at Dec. 31, 2011	$ 201.0	$ 1.0	$ 2,874.1	$ (2,609.7)	$ (0.2)	$ (148.8)	$ 84.6
Balance at beginning of period, Shares at Dec. 31, 2011		95.2
Net income	176.6			138.0
Net income attributable to nonredeemable noncontrolling interest	35.6						35.6
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest, Total	173.6
Receipt of treasury stock	(11.9)					(11.9)
Receipt of treasury stock, Shares		(0.7)
Dividends declared on convertible perpetual preferred stock	(18.1)		(18.1)
Stock-based compensation	18.1		18.1
Distributions declared	(34.2)						(34.2)
Capital contributions from consolidated affiliates	11.4						11.4
Consolidation of St. Vincent Rehabilitation Hospital	13.9						13.9
Other	1.6		1.6		2.1	(2.1)	0
Other, Shares		1.2
Balance at end of period at Sep. 30, 2012	355.4	1.0	2,875.7	(2,471.7)	1.9	(162.8)	111.3
Balance at end of period, Shares at Sep. 30, 2012		95.7
Balance at beginning of period at Dec. 31, 2012	403.5	1.0	2,876.6	(2,424.7)	1.4	(163.3)	112.5
Balance at beginning of period, Shares at Dec. 31, 2012		95.7
Net income	317.2			274.7
Net income attributable to nonredeemable noncontrolling interest	38.4						38.4
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest, Total	313.1
Receipt of treasury stock	(5.8)					(5.8)
Receipt of treasury stock, Shares		(0.3)
Dividends declared on common stock	(15.9)		(15.9)
Dividends declared on convertible perpetual preferred stock	(17.2)		(17.2)
Stock-based compensation	19.0		19.0
Stock options exercised	7.5		7.5
Stock options exercised, Shares		0.3
Distributions declared	(30.1)						(30.1)
Repurchases of common stock through tender offer	(234.1)					(234.1)
Repurchases of common stock through tender offer, Shares		(9.1)
Other	2.0		4.5		(1.6)	(1.0)	0.1
Other, Shares		0.8
Balance at end of period at Sep. 30, 2013	$ 442.0	$ 1.0	$ 2,874.5	$ (2,150.0)	$ (0.2)	$ (404.2)	$ 120.9
Balance at end of period, Shares at Sep. 30, 2013		87.4