Financial Information for the Company and Its Subsidiaries (Income Statements) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2016	Jun. 30, 2015
Condensed Financial Statements, Captions [Line Items]
Net revenue	$ 758,499		$ 641,950		$ 1,483,177	$ 1,212,395
Operating expenses:
Salaries and benefits	404,011		320,396		813,850	622,575
Supply cost	49,703		45,790		96,666	88,374
Other operating expenses	111,145		105,002		218,827	195,572
Transaction costs	5,135		1,982		6,525	3,453
Depreciation and amortization	30,054		23,612		59,126	46,430
Total operating expenses	600,048		496,782		1,194,994	956,404
Net gain (loss) on disposals and deconsolidations	2,595		(3,035)		2,595	(3,258)
Equity in earnings of unconsolidated affiliates	7,351		3,989		13,930	6,640
Operating income	168,397		146,122		304,708	259,373
Interest expense (income), net	31,913		30,182		62,723	60,429
Earnings before income taxes	136,484		115,940		241,985	198,944
Income tax expense	33,365		25,193		54,162	39,442
Net earnings	103,119		90,747		187,823	159,502
Less net earnings attributable to noncontrolling interests	57,050		57,072		110,891	104,789
Net earnings attributable to AmSurg Corp. shareholders	46,069		33,675		76,932	54,713
Preferred stock dividends	(2,264)	$ (2,300)	(2,264)	$ (2,300)	(4,528)	(4,528)
Net earnings attributable to AmSurg Corp. common shareholders	43,805		31,411		72,404	50,185
Consolidation, Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net revenue	(10,290)		(9,488)		(20,598)	(18,342)
Operating expenses:
Salaries and benefits	(135)		(124)		(268)	(252)
Supply cost	(20)		(34)		(33)	(34)
Other operating expenses	(10,135)		(9,330)		(20,297)	(18,056)
Transaction costs	0		0		0	0
Depreciation and amortization	0		0		0	0
Total operating expenses	(10,290)		(9,488)		(20,598)	(18,342)
Net gain (loss) on disposals and deconsolidations	0		0		0	188
Equity in earnings of unconsolidated affiliates	(149,288)		(137,455)		(277,187)	(249,774)
Operating income	(149,288)		(137,455)		(277,187)	(249,586)
Interest expense (income), net	0		0		0	0
Earnings before income taxes	(149,288)		(137,455)		(277,187)	(249,586)
Income tax expense	0		0		0	0
Net earnings	(149,288)		(137,455)		(277,187)	(249,586)
Less net earnings attributable to noncontrolling interests	0		0		0	0
Net earnings attributable to AmSurg Corp. shareholders	(149,288)		(137,455)		(277,187)	(249,586)
Preferred stock dividends	0		0		0	0
Net earnings attributable to AmSurg Corp. common shareholders	(149,288)		(137,455)		(277,187)	(249,586)
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net revenue	7,700		7,079		16,244	14,170
Operating expenses:
Salaries and benefits	22,246		15,511		46,341	33,154
Supply cost	0		0		0	0
Other operating expenses	6,034		5,783		13,652	12,417
Transaction costs	2,099		324		2,276	592
Depreciation and amortization	1,103		1,056		2,175	1,890
Total operating expenses	31,482		22,674		64,444	48,053
Net gain (loss) on disposals and deconsolidations	0		0		0	(188)
Equity in earnings of unconsolidated affiliates	87,700		76,931		156,742	137,318
Operating income	63,918		61,336		108,542	103,247
Interest expense (income), net	(4,215)		11,978		(7,034)	23,864
Earnings before income taxes	68,133		49,358		115,576	79,383
Income tax expense	22,064		15,683		38,644	24,670
Net earnings	46,069		33,675		76,932	54,713
Less net earnings attributable to noncontrolling interests	0		0		0	0
Net earnings attributable to AmSurg Corp. shareholders	46,069		33,675		76,932	54,713
Preferred stock dividends	(2,264)		(2,264)		(4,528)	(4,528)
Net earnings attributable to AmSurg Corp. common shareholders	43,805		31,411		72,404	50,185
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net revenue	437,042		329,579		852,872	615,158
Operating expenses:
Salaries and benefits	305,173		228,618		614,753	440,219
Supply cost	1,145		489		2,152	885
Other operating expenses	44,213		42,099		87,552	71,710
Transaction costs	3,036		1,658		4,249	2,861
Depreciation and amortization	21,192		14,617		41,528	28,924
Total operating expenses	374,759		287,481		750,234	544,599
Net gain (loss) on disposals and deconsolidations	2,857		(3,035)		2,857	(3,223)
Equity in earnings of unconsolidated affiliates	68,939		64,513		134,375	119,096
Operating income	134,079		103,576		239,870	186,432
Interest expense (income), net	35,528		17,624		68,504	35,378
Earnings before income taxes	98,551		85,952		171,366	151,054
Income tax expense	10,858		9,021		14,632	13,924
Net earnings	87,693		76,931		156,734	137,130
Less net earnings attributable to noncontrolling interests	(7)		0		(7)	0
Net earnings attributable to AmSurg Corp. shareholders	87,700		76,931		156,741	137,130
Preferred stock dividends	0		0		0	0
Net earnings attributable to AmSurg Corp. common shareholders	87,700		76,931		156,741	137,130
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net revenue	324,047		314,780		634,659	601,409
Operating expenses:
Salaries and benefits	76,727		76,391		153,024	149,454
Supply cost	48,578		45,335		94,547	87,523
Other operating expenses	71,033		66,450		137,920	129,501
Transaction costs	0		0		0	0
Depreciation and amortization	7,759		7,939		15,423	15,616
Total operating expenses	204,097		196,115		400,914	382,094
Net gain (loss) on disposals and deconsolidations	(262)		0		(262)	(35)
Equity in earnings of unconsolidated affiliates	0		0		0	0
Operating income	119,688		118,665		233,483	219,280
Interest expense (income), net	600		580		1,253	1,187
Earnings before income taxes	119,088		118,085		232,230	218,093
Income tax expense	443		489		886	848
Net earnings	118,645		117,596		231,344	217,245
Less net earnings attributable to noncontrolling interests	57,057		57,072		110,898	104,789
Net earnings attributable to AmSurg Corp. shareholders	61,588		60,524		120,446	112,456
Preferred stock dividends	0		0		0	0
Net earnings attributable to AmSurg Corp. common shareholders	$ 61,588		$ 60,524		$ 120,446	$ 112,456