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Commitments And Contingencies (Professional And General Liability) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			3 Months Ended						3 Months Ended	10 Months Ended	3 Months Ended
	Mar. 31, 2012 PSI Subsidiaries [Member]	Mar. 31, 2012 PSI Subsidiaries [Member] Minimum [Member]	Mar. 31, 2012 PSI Subsidiaries [Member] Maximum [Member]	Mar. 31, 2012 Professional And General Liability [Member]	Mar. 31, 2012 Professional And General Liability [Member] Minimum [Member]	Mar. 31, 2012 Professional And General Liability [Member] Maximum [Member]	Mar. 31, 2012 Professional And General Liability [Member] PSI Subsidiaries [Member]	Dec. 31, 2011 Professional And General Liability [Member] PSI Subsidiaries [Member]	Oct. 31, 2010 Professional And General Liability [Member] PSI Subsidiaries [Member] Minimum [Member]	Mar. 31, 2012 Professional And General Liability [Member] PSI Subsidiaries [Member] Maximum [Member]	Oct. 31, 2010 Professional And General Liability [Member] PSI Subsidiaries [Member] Maximum [Member]	Mar. 31, 2012 Professional And General Liability [Member] Legacy Subsidiaries [Member] Maximum [Member]	Mar. 31, 2012 Professional And General Liability [Member] Subsidiaries [Member]	Mar. 31, 2012 Professional And General Liability [Member] Subsidiaries [Member] Minimum [Member]	Mar. 31, 2012 Professional And General Liability [Member] Subsidiaries [Member] Maximum [Member]
Loss Contingencies [Line Items]
Self-insured exposure per occurrence				$ 10						$ 3		$ 10
Commercial insured exposure per occurrence					10	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
Commercial self-insured retention		3	10						3					10	60
Commercial self-insured retention cap	200										75
Total liability claims accrual including estimated claims related to facilities acquired							297	292
Professional and general claims included in current liabilities							$ 60	$ 60