Financial Information for the Company and Its Subsidiaries (Income Statements) (Details) - USD ($) $ in Thousands				3 Months Ended		9 Months Ended
	Aug. 27, 2015	May. 20, 2015	Mar. 03, 2015	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Condensed Financial Statements, Captions [Line Items]
Net revenue				$ 650,227	$ 502,350	$ 1,862,622	$ 1,040,138
Operating expenses:
Salaries and benefits				327,532	240,337	950,107	406,539
Supply cost				45,638	41,886	134,012	120,564
Other operating expenses				98,852	81,262	294,424	191,243
Transaction costs				2,107	25,102	5,560	28,681
Depreciation and amortization				24,106	20,838	70,536	37,533
Total operating expenses				498,235	409,425	1,454,639	784,560
Net gain on deconsolidations				9,112	0	5,854	3,411
Equity in earnings of unconsolidated affiliates				4,935	2,158	11,575	3,461
Operating income				166,039	95,083	425,412	262,450
Interest expense, net				30,242	39,054	90,671	52,906
Debt extinguishment costs				0	16,887	0	16,887
Earnings from continuing operations before income taxes				135,797	39,142	334,741	192,657
Income tax expense				37,518	22	76,960	25,802
Net earnings from continuing operations				98,279	39,120	257,781	166,855
Net loss from discontinued operations				0	(1,697)	0	(1,146)
Net earnings				98,279	37,423	257,781	165,709
Less net earnings attributable to noncontrolling interests				55,618	47,257	160,407	139,387
Net earnings (loss) attributable to AmSurg Corp. shareholders				42,661	(9,834)	97,374	26,322
Preferred stock dividends	$ (2,300)	$ (2,300)	$ (2,300)	(2,264)	(2,239)	(6,792)	(2,239)
Net earnings (loss) attributable to AmSurg Corp. common shareholders				40,397	(12,073)	90,582	24,083
Amounts attributable to AmSurg Corp. common shareholders:
Earnings (loss) from continuing operations, net of income tax				40,397	(10,697)	90,582	25,466
Loss from discontinued operations, net of income tax				0	(1,376)	0	(1,383)
Net earnings (loss) attributable to AmSurg Corp. common shareholders				40,397	(12,073)	90,582	24,083
Consolidation, Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net revenue				(9,614)	(4,803)	(27,956)	(14,189)
Operating expenses:
Salaries and benefits				(128)	(123)	(380)	(369)
Supply cost				(20)	0	(54)	0
Other operating expenses				(9,466)	(4,680)	(27,522)	(13,820)
Transaction costs				0	0	0	0
Depreciation and amortization				0	0	0	0
Total operating expenses				(9,614)	(4,803)	(27,956)	(14,189)
Net gain on deconsolidations				0		0	(3,411)
Equity in earnings of unconsolidated affiliates				(155,720)	(104,716)	(405,306)	(308,795)
Operating income				(155,720)	(104,716)	(405,306)	(312,206)
Interest expense, net				0	0	0	0
Debt extinguishment costs					0		0
Earnings from continuing operations before income taxes				(155,720)	(104,716)	(405,306)	(312,206)
Income tax expense				0	0	0	0
Net earnings from continuing operations					(104,716)		(312,206)
Net loss from discontinued operations					0		0
Net earnings				(155,720)	(104,716)	(405,306)	(312,206)
Less net earnings attributable to noncontrolling interests				0	0	0	0
Net earnings (loss) attributable to AmSurg Corp. shareholders				(155,720)	(104,716)	(405,306)	(312,206)
Preferred stock dividends				0	0	0	0
Net earnings (loss) attributable to AmSurg Corp. common shareholders				(155,720)	(104,716)	(405,306)	(312,206)
Amounts attributable to AmSurg Corp. common shareholders:
Earnings (loss) from continuing operations, net of income tax					(104,716)		(312,206)
Loss from discontinued operations, net of income tax					0		0
Net earnings (loss) attributable to AmSurg Corp. common shareholders				(155,720)	(104,716)	(405,306)	(312,206)
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net revenue				5,975	5,551	20,145	18,042
Operating expenses:
Salaries and benefits				17,642	14,961	50,796	44,728
Supply cost				0	0	0	0
Other operating expenses				7,054	6,425	19,471	15,440
Transaction costs				270	23,111	862	26,690
Depreciation and amortization				1,017	789	2,907	2,429
Total operating expenses				25,983	45,286	74,036	89,287
Net gain on deconsolidations				0		0	3,411
Equity in earnings of unconsolidated affiliates				96,232	58,649	233,362	161,340
Operating income				76,224	18,914	179,471	93,506
Interest expense, net				11,766	23,865	35,630	36,658
Debt extinguishment costs					16,887		16,887
Earnings from continuing operations before income taxes				64,458	(21,838)	143,841	39,961
Income tax expense				21,797	(8,566)	46,467	16,687
Net earnings from continuing operations					(13,272)		23,274
Net loss from discontinued operations					3,438		3,048
Net earnings				42,661	(9,834)	97,374	26,322
Less net earnings attributable to noncontrolling interests				0	0	0	0
Net earnings (loss) attributable to AmSurg Corp. shareholders				42,661	(9,834)	97,374	26,322
Preferred stock dividends				(2,264)	(2,239)	(6,792)	(2,239)
Net earnings (loss) attributable to AmSurg Corp. common shareholders				40,397	(12,073)	90,582	24,083
Amounts attributable to AmSurg Corp. common shareholders:
Earnings (loss) from continuing operations, net of income tax					(15,511)		21,035
Loss from discontinued operations, net of income tax					3,438		3,048
Net earnings (loss) attributable to AmSurg Corp. common shareholders				40,397	(12,073)	90,582	24,083
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net revenue				339,484	221,013	954,642	221,013
Operating expenses:
Salaries and benefits				231,769	153,653	671,988	153,653
Supply cost				476	816	1,361	816
Other operating expenses				34,742	19,127	106,452	19,127
Transaction costs				1,837	1,991	4,698	1,991
Depreciation and amortization				14,906	12,320	43,830	12,320
Total operating expenses				283,730	187,907	828,329	187,907
Net gain on deconsolidations				9,112		5,889	3,411
Equity in earnings of unconsolidated affiliates				64,423	48,225	183,519	150,916
Operating income				129,289	81,331	315,721	187,433
Interest expense, net				17,845	14,630	53,223	14,630
Debt extinguishment costs					0		0
Earnings from continuing operations before income taxes				111,444	66,701	262,498	172,803
Income tax expense				15,210	8,051	29,134	8,051
Net earnings from continuing operations					58,650		164,752
Net loss from discontinued operations					0		0
Net earnings				96,234	58,650	233,364	164,752
Less net earnings attributable to noncontrolling interests				0	0	0	0
Net earnings (loss) attributable to AmSurg Corp. shareholders				96,234	58,650	233,364	164,752
Preferred stock dividends				0	0	0	0
Net earnings (loss) attributable to AmSurg Corp. common shareholders				96,234	58,650	233,364	164,752
Amounts attributable to AmSurg Corp. common shareholders:
Earnings (loss) from continuing operations, net of income tax					58,650		164,752
Loss from discontinued operations, net of income tax					0		0
Net earnings (loss) attributable to AmSurg Corp. common shareholders				96,234	58,650	233,364	164,752
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net revenue				314,382	280,589	915,791	815,272
Operating expenses:
Salaries and benefits				78,249	71,846	227,703	208,527
Supply cost				45,182	41,070	132,705	119,748
Other operating expenses				66,522	60,390	196,023	170,496
Transaction costs				0	0	0	0
Depreciation and amortization				8,183	7,729	23,799	22,784
Total operating expenses				198,136	181,035	580,230	521,555
Net gain on deconsolidations				0		(35)	0
Equity in earnings of unconsolidated affiliates				0	0	0	0
Operating income				116,246	99,554	335,526	293,717
Interest expense, net				631	559	1,818	1,618
Debt extinguishment costs					0		0
Earnings from continuing operations before income taxes				115,615	98,995	333,708	292,099
Income tax expense				511	537	1,359	1,064
Net earnings from continuing operations					98,458		291,035
Net loss from discontinued operations					(5,135)		(4,194)
Net earnings				115,104	93,323	332,349	286,841
Less net earnings attributable to noncontrolling interests				55,618	47,257	160,407	139,387
Net earnings (loss) attributable to AmSurg Corp. shareholders				59,486	46,066	171,942	147,454
Preferred stock dividends				0	0	0	0
Net earnings (loss) attributable to AmSurg Corp. common shareholders				59,486	46,066	171,942	147,454
Amounts attributable to AmSurg Corp. common shareholders:
Earnings (loss) from continuing operations, net of income tax					50,880		151,885
Loss from discontinued operations, net of income tax					(4,814)		(4,431)
Net earnings (loss) attributable to AmSurg Corp. common shareholders				$ 59,486	$ 46,066	$ 171,942	$ 147,454