Subsequent Events (Details) (Sheridan Healthcare [Member], USD $)	0 Months Ended			0 Months Ended				0 Months Ended							0 Months Ended
	May 29, 2014	Jul. 16, 2014 Subsequent Event [Member] Delay registration	Jul. 16, 2014 Subsequent Event [Member]	Jul. 16, 2014 Subsequent Event [Member] 2022 Senior Unsecured Notes [Member] Senior Notes [Member]	Jul. 16, 2014 Subsequent Event [Member] 2022 Senior Unsecured Notes [Member] Senior Notes [Member]	Jul. 16, 2014 Subsequent Event [Member] Senior Secured Credit Facility [Member]	Jul. 16, 2014 Subsequent Event [Member] Senior Secured Credit Facility - Term Loan [Member]	Jul. 16, 2014 Subsequent Event [Member] Senior Secured Credit Facility - Term Loan [Member] LIBOR [Member]	Jul. 16, 2014 Subsequent Event [Member] Senior Secured Credit Facility - Term Loan [Member] Minimum [Member] Alternative Base Rate [Member]	Jul. 16, 2014 Subsequent Event [Member] Senior Secured Credit Facility - Term Loan [Member] Minimum [Member] LIBOR [Member]	Jul. 16, 2014 Subsequent Event [Member] Senior Secured Credit Facility - Term Loan [Member] Maximum [Member] Alternative Base Rate [Member]	Jul. 16, 2014 Subsequent Event [Member] Senior Secured Credit Facility - Term Loan [Member] Maximum [Member] LIBOR [Member]	Jul. 16, 2014 Subsequent Event [Member] Revolving Credit Facility [Member]	Jul. 16, 2014 Subsequent Event [Member] Revolving Credit Facility [Member]	Jul. 16, 2014 Subsequent Event [Member] Revolving Credit Facility [Member] Minimum [Member] Alternative Base Rate [Member]	Jul. 16, 2014 Subsequent Event [Member] Revolving Credit Facility [Member] Minimum [Member] LIBOR [Member]	Jul. 16, 2014 Subsequent Event [Member] Revolving Credit Facility [Member] Maximum [Member] Alternative Base Rate [Member]	Jul. 16, 2014 Subsequent Event [Member] Revolving Credit Facility [Member] Maximum [Member] LIBOR [Member]	Jul. 16, 2014 Subsequent Event [Member] Common Stock [Member]	Jul. 16, 2014 Subsequent Event [Member] Mandatory Convertible Preferred Stock [Member]	Jul. 16, 2014 Subsequent Event [Member] Mandatory Convertible Preferred Stock [Member]	Jul. 16, 2014 Subsequent Event [Member] Mandatory Convertible Preferred Stock [Member] Minimum [Member]	Jul. 16, 2014 Subsequent Event [Member] Mandatory Convertible Preferred Stock [Member] Maximum [Member]
Total consideration	$ 2,350,000,000	$ 2,350,000,000
Cash paid to acquire business		2,100,000,000
Common stock issued to acquiree			5,700,000
Minimum Offering Price			100,000,000
Minimum Anticipated Offering Price			50,000,000
Number of Demand Registrations in 360 Day Period		3
Number of Demands Registration in 90 Day Period		1
Registration Effectiveness Delay Period		60 days
Number of Delays of Registration Effectiveness in 12 Month Period		3
Registration Effectiveness Maximum Delay in 12 Month Period		120 days
Shares issued during period																			9,775,000	1,725,000
Proceeds from common stock																			421,580,000
Proceeds from preferred stock																				167,025,000
Borrowing capacity of new revolving credit agreement							870,000,000							300,000,000
Face amount					1,100,000,000
Interest rate					5.625%
Dividend rate																				5.25%
Liquidation preference (in dollars per share)																					$ 100
Conversion Rate																						1.8141	2.2222
Threshold in Consecutive Trading Days for Conversion into Common Stock																				20 days
Basis Spread on Variable Rate									1.75%	2.75%	2.00%	3.00%			1.75%	2.75%	2.00%	3.00%
Variable Rate Floor								0.75%
Minimum Variable Rate								3.75%
Unused capacity commitment fee, percentage													0.375%
Period payment of principal, percentage													0.25%
Maximum Increase in Borrowing Capacity						300,000,000
Filing Period Maximum				270 days
Registration Effectiveness Penalty Maximum, Percentage				1.00%
Expected Business Acquisition Transaction Costs, Deferred Offering Costs and Financing Costs			$ 130,000,000
Expected Business Acquisition Transaction Costs, Deferred Offering Costs and Financing Costs, Percentage to be Capitalized			60.00%