Goodwill And Intangible Assets (Summary Of Intangible Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Indefinite-lived Intangible Assets [Line Items]
Non-amortizable intangible assets	$ 237,995	$ 237,995
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,127,304	1,085,129
Accumulated Amortization	(82,922)	(49,245)
Net	1,044,382	1,035,884
Total intangible assets, gross carrying amount	1,365,299	1,323,124
Accumulated Amortization	(82,922)	(49,245)
Total intangible assets, net	1,282,377	1,273,879
Trade name [Member]
Indefinite-lived Intangible Assets [Line Items]
Non-amortizable intangible assets	228,000	228,000
Restrictive covenant arrangements [Member]
Indefinite-lived Intangible Assets [Line Items]
Non-amortizable intangible assets	9,995	9,995
Customer relationships with hospitals [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,001,463	971,645
Accumulated Amortization	(46,996)	(22,145)
Net	954,467	949,500
Accumulated Amortization	(46,996)	(22,145)
Deferred financing cost [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	59,858	59,574
Accumulated Amortization	(9,299)	(5,151)
Net	50,559	54,423
Accumulated Amortization	(9,299)	(5,151)
Capitalized software [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	61,765	50,387
Accumulated Amortization	(23,676)	(19,197)
Net	38,089	31,190
Accumulated Amortization	(23,676)	(19,197)
Agreements, contracts, and other intangible assets
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,218	3,523
Accumulated Amortization	(2,951)	(2,752)
Net	1,267	771
Accumulated Amortization	$ (2,951)	$ (2,752)