Goodwill And Intangible Assets (Summary Of Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 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	1,134,020	1,085,129
Accumulated Amortization	(65,748)	(49,245)
Net	1,068,272us-gaap_FiniteLivedIntangibleAssetsNet	1,035,884us-gaap_FiniteLivedIntangibleAssetsNet
Total intangible assets, gross carrying amount	1,372,015	1,323,124
Accumulated Amortization	(65,748)	(49,245)
Total intangible assets, net	1,306,267	1,273,879
Customer relationships with hospitals [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,015,763	971,645
Accumulated Amortization	(34,545)	(22,145)
Net	981,218	949,500
Accumulated Amortization	(34,545)	(22,145)
Deferred financing cost [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	59,660	59,574
Accumulated Amortization	(7,225)	(5,151)
Net	52,435	54,423
Accumulated Amortization	(7,225)	(5,151)
Capitalized software [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	54,529	50,387
Accumulated Amortization	(21,136)	(19,197)
Net	33,393	31,190
Accumulated Amortization	(21,136)	(19,197)
Agreements, contracts, and other intangible assets
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,068	3,523
Accumulated Amortization	(2,842)	(2,752)
Net	1,226	771
Accumulated Amortization	(2,842)	(2,752)
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

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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