Financial Information for the Company and Its Subsidiaries (Income Statements) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Condensed Financial Statements, Captions [Line Items]
Net revenues	$ 581,811	$ 502,350	$ 278,227	$ 259,561	$ 279,095	$ 262,240	$ 262,497	$ 253,364	$ 1,621,949	$ 1,057,196	$ 899,245
Operating expenses:
Salaries and benefits									694,576	327,585	284,528
Supply cost									164,296	153,126	126,919
Other operating expenses									284,928	216,501	185,866
Transaction costs		25,100							33,890	300	700
Depreciation and amortization									60,344	32,400	29,255
Total operating expenses									1,238,034	729,912	627,268
Gain on deconsolidation									3,411	2,237	0
Equity in earnings of unconsolidated affiliates									7,038	3,151	1,564
Operating income									394,364	332,672	273,541
Interest expense, net									83,285	29,525	16,950
Debt extinguishment costs		16,900							16,887	0	0
Earnings from continuing operations before income taxes	101,535	39,141	80,487	73,029	80,363	72,615	77,100	73,069	294,192	303,147	256,591
Income tax expense									48,103	48,654	40,893
Net earnings from continuing operations	79,234	39,119	67,689	60,047	67,348	61,470	64,607	61,068	246,089	254,493	215,698
Net earnings (loss) from discontinued operations	(150)	(1,697)	483	68	3,820	797	1,229	1,205	(1,296)	7,051	7,945
Net earnings	79,084	37,422	68,172	60,115	71,168	62,267	65,836	62,273	244,793	261,544	223,643
Less net earnings attributable to noncontrolling interests									191,092	188,841	161,080
Net earnings attributable to AmSurg Corp. shareholders									53,701	72,703	62,563
Preferred stock dividends									(4,503)	0	0
Net earnings attributable to AmSurg Corp. common shareholders	25,115	(12,073)	18,961	17,195	19,558	16,771	18,563	17,811	49,198	72,703	62,563
Amounts attributable to AmSurg Corp. common shareholders:
Earnings from continuing operations, net of income tax	25,311	(10,697)	18,771	17,392	18,931	16,636	18,093	17,349	50,777	71,009	60,037
Earnings (loss) from discontinued operations, net of income tax	(196)	(1,376)	190	(197)	627	135	470	462	(1,579)	1,694	2,526
Net earnings attributable to AmSurg Corp. common shareholders	25,115	(12,073)	18,961	17,195	19,558	16,771	18,563	17,811	49,198	72,703	62,563
Consolidating Adjustments [Member]
Condensed Financial Statements, Captions [Line Items]
Net revenues									(24,336)	(17,518)	(14,901)
Operating expenses:
Salaries and benefits									(5,786)	(467)	(450)
Supply cost									0	0	0
Other operating expenses									(18,550)	(17,051)	(14,451)
Transaction costs									0	0	0
Depreciation and amortization									0	0	0
Total operating expenses									(24,336)	(17,518)	(14,901)
Gain on deconsolidation									(3,411)	(2,237)
Equity in earnings of unconsolidated affiliates									(439,097)	(406,773)	(354,710)
Operating income									(442,508)	(409,010)	(354,710)
Interest expense, net									0	0	0
Debt extinguishment costs									0
Earnings from continuing operations before income taxes									(442,508)	(409,010)	(354,710)
Income tax expense									0	0	0
Net earnings from continuing operations									(442,508)	(409,010)	(354,710)
Net earnings (loss) from discontinued operations									0	0	0
Net earnings									(442,508)	(409,010)	(354,710)
Less net earnings attributable to noncontrolling interests									0	0	0
Net earnings attributable to AmSurg Corp. shareholders									(442,508)
Preferred stock dividends									0
Net earnings attributable to AmSurg Corp. common shareholders									(442,508)	(409,010)	(354,710)
Amounts attributable to AmSurg Corp. common shareholders:
Earnings from continuing operations, net of income tax									(442,508)	(409,010)	(354,710)
Earnings (loss) from discontinued operations, net of income tax									0	0	0
Net earnings attributable to AmSurg Corp. common shareholders									(442,508)	(409,010)	(354,710)
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net revenues									24,773	24,167	19,907
Operating expenses:
Salaries and benefits									65,697	61,038	54,895
Supply cost									0	0	0
Other operating expenses									18,667	22,360	19,799
Transaction costs									29,004	300	700
Depreciation and amortization									4,044	3,186	2,860
Total operating expenses									117,412	86,884	78,254
Gain on deconsolidation									3,411	2,237
Equity in earnings of unconsolidated affiliates									234,246	204,962	178,137
Operating income									145,018	144,482	119,790
Interest expense, net									47,997	27,282	14,803
Debt extinguishment costs									16,887
Earnings from continuing operations before income taxes									80,134	117,200	104,987
Income tax expense									29,166	47,139	39,339
Net earnings from continuing operations									50,968	70,061	65,648
Net earnings (loss) from discontinued operations									2,733	2,642	(3,085)
Net earnings									53,701	72,703	62,563
Less net earnings attributable to noncontrolling interests									0	0	0
Net earnings attributable to AmSurg Corp. shareholders									53,701
Preferred stock dividends									(4,503)
Net earnings attributable to AmSurg Corp. common shareholders									49,198	72,703	62,563
Amounts attributable to AmSurg Corp. common shareholders:
Earnings from continuing operations, net of income tax									46,465	70,061	65,648
Earnings (loss) from discontinued operations, net of income tax									2,733	2,642	(3,085)
Net earnings attributable to AmSurg Corp. common shareholders									49,198	72,703	62,563
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net revenues									508,572	0	0
Operating expenses:
Salaries and benefits									350,615	0	0
Supply cost									1,292	0	0
Other operating expenses									53,413	0	0
Transaction costs									4,886	0	0
Depreciation and amortization									25,610	0	0
Total operating expenses									435,816	0	0
Gain on deconsolidation									3,411	2,237
Equity in earnings of unconsolidated affiliates									211,889	204,962	178,137
Operating income									288,056	207,199	178,137
Interest expense, net									33,026	0	0
Debt extinguishment costs									0
Earnings from continuing operations before income taxes									255,030	207,199	178,137
Income tax expense									17,373	0	0
Net earnings from continuing operations									237,657	207,199	178,137
Net earnings (loss) from discontinued operations									0	0	0
Net earnings									237,657	207,199	178,137
Less net earnings attributable to noncontrolling interests									21	0	0
Net earnings attributable to AmSurg Corp. shareholders									237,636
Preferred stock dividends									0
Net earnings attributable to AmSurg Corp. common shareholders									237,636	207,199	178,137
Amounts attributable to AmSurg Corp. common shareholders:
Earnings from continuing operations, net of income tax									237,636	207,199	178,137
Earnings (loss) from discontinued operations, net of income tax									0	0	0
Net earnings attributable to AmSurg Corp. common shareholders									237,636	207,199	178,137
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net revenues									1,112,940	1,050,547	894,239
Operating expenses:
Salaries and benefits									284,050	267,014	230,083
Supply cost									163,004	153,126	126,919
Other operating expenses									231,398	211,192	180,518
Transaction costs									0	0	0
Depreciation and amortization									30,690	29,214	26,395
Total operating expenses									709,142	660,546	563,915
Gain on deconsolidation									0	0
Equity in earnings of unconsolidated affiliates									0	0	0
Operating income									403,798	390,001	330,324
Interest expense, net									2,262	2,243	2,147
Debt extinguishment costs									0
Earnings from continuing operations before income taxes									401,536	387,758	328,177
Income tax expense									1,564	1,515	1,554
Net earnings from continuing operations									399,972	386,243	326,623
Net earnings (loss) from discontinued operations									(4,029)	4,409	11,030
Net earnings									395,943	390,652	337,653
Less net earnings attributable to noncontrolling interests									191,071	188,841	161,080
Net earnings attributable to AmSurg Corp. shareholders									204,872
Preferred stock dividends									0
Net earnings attributable to AmSurg Corp. common shareholders									204,872	201,811	176,573
Amounts attributable to AmSurg Corp. common shareholders:
Earnings from continuing operations, net of income tax									209,184	202,759	170,962
Earnings (loss) from discontinued operations, net of income tax									(4,312)	(948)	5,611
Net earnings attributable to AmSurg Corp. common shareholders									$ 204,872	$ 201,811	$ 176,573