Acquisitions and Disposals (Components Of Preliminary Purchase Price Allocations) (Details) £ in Thousands, CAD in Thousands		3 Months Ended								12 Months Ended
		Mar. 31, 2015 GBP (£)	Mar. 31, 2015 USD ($)	Mar. 31, 2015 CAD	Sep. 30, 2014 USD ($)	Jun. 30, 2014 GBP (£)	Jun. 30, 2014 USD ($)	Mar. 31, 2014 GBP (£)	Mar. 31, 2014 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2013 GBP (£)	Jun. 30, 2013 USD ($)	Mar. 04, 2015 USD ($)	Feb. 20, 2015 USD ($)	Jul. 17, 2014 USD ($)	Apr. 28, 2014 USD ($)	Jan. 13, 2014 USD ($)	May. 02, 2013 USD ($)	Dec. 21, 2012 USD ($)	Oct. 27, 2012 USD ($)
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles							$ 41,976,000			$ 14,621,000	$ 41,976,000
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value										45,860,000
Business Combination, Consideration Transferred										159,046,000	367,108,000		$ 464,489,000
Business Combination, Contingent Consideration, Liability							32,958,000			1,603,000	32,958,000		13,491,000
Goodwill	[1]						1,134,368,000			1,136,079,000	1,134,368,000		876,106,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent							24,298,000			16,945,000	24,298,000		8,907,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities							100,061,000			59,121,000	100,061,000		19,946,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill							152,063,000			60,288,000	152,063,000		186,669,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment							43,580,000			37,556,000	43,580,000		42,995,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets							94,886,000			81,725,000	94,886,000		60,316,000
Business Acquisition, Cost of Acquired Entity, Cash Paid										91,893,000
Payments to Acquire Businesses, Net of Cash Acquired										104,633,000	177,290,000		350,426,000
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned							159,521,000			19,690,000	159,521,000		102,636,000
Total purchase price allocation							367,108,000				367,108,000		464,489,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets										7,288,000
UK Ambient Grocery Brands [Member]
Business Acquisition [Line Items]
Business Combination, Consideration Transferred													321,307,000
Business Combination, Contingent Consideration, Liability																					$ 0
Goodwill																					134,123,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent																					(2,882,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities																					2,693,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill																					118,020,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment																					39,150,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets																					29,825,000
Business Acquisition, Cost of Acquired Entity, Cash Paid												£ 169,708	273,246,000
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned																					48,061,000
Total purchase price allocation																					$ 321,307,000
Tilda [Member]
Business Acquisition [Line Items]
Business Combination, Consideration Transferred									$ 305,133,000
Goodwill									173,922,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent									26,230,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities									93,742,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill									124,549,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment									39,806,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets									86,828,000
Payments to Acquire Businesses, Net of Cash Acquired | £								£ 123,822
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned																		$ 148,353,000
Other Payments to Acquire Businesses		£ 10,000	$ 15,114,000					£ 20,000	$ 32,958,000
Rudis [Member]
Business Acquisition [Line Items]
Business Combination, Consideration Transferred							61,975,000
Goodwill																	$ 27,016,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent																	(1,932,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities																	6,319,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill																	27,514,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment																	3,774,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets																	8,058,000
Payments to Acquire Businesses, Net of Cash Acquired | £						£ 50,807
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned																	$ 11,168,000
Other Payments to Acquire Businesses							0
FY'14 Acquisitions [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired											174,629,000
2014 Acquisition [Member]
Business Acquisition [Line Items]
Goodwill							$ 200,938,000				$ 200,938,000
Hain Pure Protein [Member]
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired																51.30%
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value					$ 36,074,000
Business Combination, Consideration Transferred					76,074,000
Business Combination, Contingent Consideration, Liability																$ 0
Goodwill																14,484,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent																1,388,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities																(41,705,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill																20,700,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment																21,864,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets																52,055,000
Business Acquisition, Cost of Acquired Entity, Cash Paid					$ 20,310,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets																$ 7,288,000
Empire Kosher [Member]
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired														81.00%		19.00%
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value			9,786,000
Business Combination, Consideration Transferred			67,381,000
Business Combination, Contingent Consideration, Liability														$ 0
Goodwill														30,844,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent														(14,443,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities														(15,632,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill														33,890,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment														13,094,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets														19,628,000
Payments to Acquire Businesses, Net of Cash Acquired			57,595,000
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned														0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets														$ 0
FY'15 Acquisitions [Member]
Business Acquisition [Line Items]
Goodwill										$ 48,255,000
Belvedere [Member]
Business Acquisition [Line Items]
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value			0
Business Combination, Consideration Transferred			15,591,000
Business Combination, Contingent Consideration, Liability															$ 1,603,000
Goodwill															2,927,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent															(3,890,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities															(1,784,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill															5,698,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment															2,598,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets															10,042,000
Business Acquisition, Cost of Acquired Entity, Cash Paid			$ 13,988,000	CAD 17,454
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned															0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets															$ 0
BluePrint [Member]
Business Acquisition [Line Items]
Business Combination, Consideration Transferred													39,695,000
Business Combination, Contingent Consideration, Liability													11,800							$ 13,491,000
Goodwill																				16,989,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent																				0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities																				2,189,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill																				18,980,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment																				3,173,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets																				2,742,000
Business Acquisition, Cost of Acquired Entity, Cash Paid													16,679,000
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned																				9,525,000
Total purchase price allocation																				$ 39,695,000
Ella's Kitchen [Member]
Business Acquisition [Line Items]
Business Combination, Consideration Transferred													103,487,000
Business Combination, Contingent Consideration, Liability																			$ 0
Goodwill																			52,250,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent																			11,789,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities																			15,064,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill																			49,669,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment																			672,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets																			27,749,000
Payments to Acquire Businesses, Net of Cash Acquired												£ 37,571	58,437,000
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned																			45,050,000
Total purchase price allocation																			$ 103,487,000
Fiscal 2013 Acquisitions [Member]
Business Acquisition [Line Items]
Goodwill													203,362,000
Payments to Acquire Businesses, Net of Cash Acquired													348,362,000
Customer Relationships [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired													$ 46,232,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life										10 years 9 months	13 years 2 months	15 years 7 months	15 years 7 months
Trade Names [Member]
Business Acquisition [Line Items]
Indefinite-lived Intangible Assets Acquired										$ 45,667,000	$ 110,087,000		$ 139,337,000
Noncompete Agreements [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired													$ 1,100,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life												3 years	3 years

[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.