Acquisitions (Fair Value Of Total Consideration Transferred And Major Class Of Consideration) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014 Series of Individually Immaterial Business Acquisitions [Member]	Sep. 30, 2013 Series of Individually Immaterial Business Acquisitions [Member]	Sep. 30, 2014 Sheridan Healthcare [Member]
Business Acquisition [Line Items]
Accounts receivable			$ 1,023	$ 3,082	$ 129,234	[1]
Other current assets			892	1,801	110,335	[1]
Property and equipment			2,481	5,357	14,258	[1]
Goodwill	3,303,818	1,758,970	44,374	91,545	1,512,663	[1]
Intangible assets			0	0	1,200,028	[1]
Other long-term assets			0	0	50,533	[1]
Accounts payable			(2,341)	(1,482)	(5,776)	[1]
Other accrued liabilities			(527)	(416)	(117,159)	[1]
Deferred income taxes			0	0	(411,881)	[1]
Other long-term liabilities			0	0	(72,623)	[1]
Long-term debt			(214)	(2,561)	0	[1]
Total fair value			45,688	97,326	2,409,612	[1]
Less: Fair value attributable to noncontrolling interests			21,251	38,123	23,361	[1]
Acquisition date fair value of total consideration transferred			$ 24,437	$ 59,203	$ 2,386,251	[1]

[1] The allocation of fair value of acquired assets and liabilities associated with the Sheridan acquisition is preliminary at September 30, 2014.