Commitments And Contingencies (Professional And General Liability) (Narrative) (Details) (USD $) In Millions, unless otherwise specified	10 Months Ended				10 Months Ended		9 Months Ended	10 Months Ended	9 Months Ended		9 Months Ended	12 Months Ended	3 Months Ended			9 Months Ended			9 Months Ended
	Oct. 31, 2010 Minimum [Member] Professional And General Liability [Member]	Sep. 30, 2011 Minimum [Member] Professional And General Liability [Member]	Oct. 31, 2010 Minimum [Member] Professional And General Liability [Member] PSI Subsidiaries [Member]	Sep. 30, 2011 Minimum [Member] Professional And General Liability [Member] Subsidiaries [Member]	Oct. 31, 2010 Maximum [Member] Professional And General Liability [Member]	Sep. 30, 2011 Maximum [Member] Professional And General Liability [Member]	Sep. 30, 2011 Maximum [Member] Professional And General Liability [Member] PSI Subsidiaries [Member]	Oct. 31, 2010 Maximum [Member] Professional And General Liability [Member] PSI Subsidiaries [Member]	Sep. 30, 2011 Maximum [Member] Professional And General Liability [Member] Legacy Subsidiaries [Member]	Sep. 30, 2011 Maximum [Member] Professional And General Liability [Member] Subsidiaries [Member]	Sep. 30, 2011 Professional And General Liability [Member]	Dec. 31, 2007 Professional And General Liability [Member]	Jun. 30, 2010 Professional And General Liability [Member] PSI Subsidiaries [Member]	Sep. 30, 2011 Professional And General Liability [Member] PSI Subsidiaries [Member]	Dec. 31, 2010 Professional And General Liability [Member] PSI Subsidiaries [Member]	Sep. 30, 2011 Professional And General Liability [Member] Subsidiaries [Member]	Sep. 30, 2011 Minimum [Member] PSI Subsidiaries [Member]	Sep. 30, 2011 Maximum [Member] PSI Subsidiaries [Member]	Sep. 30, 2011 PSI Subsidiaries [Member]
Loss Contingencies [Line Items]
Commercial insured exposure per occurrence	$ 10				$ 200							$ 20
Self-insured exposure per occurrence							3		10		10
Commercial self-insured retention			3	10						60							3	10
Commercial self-insured retention cap								75											200
Percentage of liability for claims paid under commercially insured coverage											10.00%					10.00%
Liability for claims paid pursuant to commercially insured coverage, amount		10				60
Total liability claims accrual including estimated claims related to facilities acquired														303	289
Professional and general claims included in current liabilities														60	60
Reduction in professional and general liability self insurance reserves relating to prior years													$ 16