Acquisitions and Disposals Acquisitions and Disposals (Fiscal 2014) (Narrative) (Details)	3 Months Ended		9 Months Ended			12 Months Ended		3 Months Ended	9 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended			3 Months Ended			3 Months Ended		9 Months Ended		3 Months Ended			3 Months Ended				9 Months Ended		9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended
	Mar. 31, 2015 USD ($)		Mar. 31, 2015 USD ($)		Mar. 31, 2014 USD ($)	Jun. 30, 2014 USD ($)		Mar. 31, 2014 FY'14 Acquisitions [Member] USD ($)	Mar. 31, 2014 FY'14 Acquisitions [Member] USD ($)	Mar. 31, 2015 FY'15 Acquisitions [Member] USD ($)	Mar. 31, 2014 FY'15 Acquisitions [Member] USD ($)	Mar. 31, 2015 FY'15 Acquisitions [Member] USD ($)	Mar. 31, 2014 FY'15 Acquisitions [Member] USD ($)	Mar. 31, 2015 Empire Kosher [Member] USD ($)	Mar. 31, 2015 Empire Kosher [Member] USD ($)	Mar. 04, 2015 Empire Kosher [Member] USD ($)	Jul. 17, 2014 Empire Kosher [Member]	Sep. 30, 2014 Hain Pure Protein [Member] USD ($)	Jul. 17, 2014 Hain Pure Protein [Member] USD ($)	Jun. 30, 2014 Hain Pure Protein [Member] USD ($)	Mar. 31, 2015 Belvedere [Member] USD ($)	Mar. 31, 2015 Belvedere [Member] CAD	Mar. 31, 2015 Belvedere [Member] USD ($)	Feb. 20, 2015 Belvedere [Member] USD ($)	Jun. 30, 2014 Rudis [Member] USD ($)	Jun. 30, 2014 Rudis [Member] GBP (£)	Apr. 28, 2014 Rudis [Member] USD ($)	Mar. 31, 2015 Tilda [Member] USD ($)	Mar. 31, 2015 Tilda [Member] GBP (£)	Mar. 31, 2014 Tilda [Member] USD ($)	Mar. 31, 2014 Tilda [Member] GBP (£)	Mar. 31, 2015 Tilda [Member]	Jan. 13, 2014 Tilda [Member] USD ($)	Mar. 31, 2015 Customer Relationships [Member]	Jun. 30, 2014 Customer Relationships [Member]	Mar. 31, 2015 Trade Names [Member] USD ($)	Jun. 30, 2014 Trade Names [Member] USD ($)
Business Acquisition [Line Items]
Goodwill	$ 1,107,328,000	[1]	$ 1,107,328,000	[1]		$ 1,134,368,000	[1]			$ 44,919,000		$ 44,919,000				$ 28,212,000			$ 14,783,000					$ 1,924,000	$ 28,998,000					$ 173,116,000
Business Acquisition, Percentage of Voting Interests Acquired																81.00%	19.00%		51.30%
Business Acquisition, Pro Forma Revenue								572,905,000	1,723,757,000	687,902,000	649,213,000	2,099,232,000	1,873,452,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	14,751,000		14,751,000			41,976,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life																																		10 years 9 months	13 years 2 months
Indefinite-lived Intangible Assets Acquired																																				45,667,000	110,087,000
Payments to Acquire Businesses, Net of Cash Acquired			104,419,000		121,499,000	174,629,000								57,595,000												50,807,000					123,822,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares																		462,856							267,488	267,488				3,292,346	3,292,346	266,984
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	19,690,000		19,690,000			159,521,000										0			19,690,000					0			11,168,000						148,353,000
Equity Method Investment, Ownership Percentage																				48.70%
Other Payments to Acquire Businesses																									0			15,114,000	10,000,000	32,958,000	20,000,000
Business Combination, Contingent Consideration, Liability	1,603,000		1,603,000			32,958,000										0			0					1,603,000
Business Acquisition, Cost of Acquired Entity, Cash Paid			91,681,000															20,310,000			13,776,000	17,189,000
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax								38,139,000	117,874,000	34,179,000	38,956,000	100,058,000	110,888,000
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax, Per Share, Diluted								$ 0.37	$ 1.15	$ 0.33	$ 0.38	$ 0.97	$ 1.11
Investments and joint ventures	3,449,000		3,449,000			36,511,000														30,740,000
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value			45,860,000												9,786,000			36,074,000					0
Gain (Loss) on Disposition of Stock in Subsidiary or Equity Method Investee	8,256,000		8,256,000		0									2,922,000				5,334,000
Foreign Currency Transaction Gain (Loss), before Tax			$ 3,397,000

[1] The total carrying value of goodwill for all periods in the table above is reflected net of $42,029 of accumulated impairment charges recorded during fiscal 2009 which relate to the Company’s United Kingdom and Europe operating segments.