Effective Income Tax Reconciliation, Repatriation Of Foreign Earnings, Per Diluted Share

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Quarterly Financial Information [Line Items]

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Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1252-109256

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-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

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Amount of foreign earnings repatriated from subsidiaries outside the country of domicile.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to repatriation of foreign earnings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
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-Section 50
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The net result for the period of deducting operating expenses from operating revenues.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Quarterly Results (unaudited) - Quarterly Results Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Apr. 30, 2016	Jan. 30, 2016	Oct. 31, 2015	Aug. 01, 2015	Apr. 25, 2015	Jan. 24, 2015	Oct. 25, 2014	Jul. 26, 2014	Apr. 30, 2016	Apr. 25, 2015	Apr. 26, 2014
Quarterly Financial Information [Line Items]
Operating income	$ 106,344	$ 95,729	$ 83,463	$ 62,177	$ 89,073	$ 77,377	$ 72,140	$ 65,996	$ 347,713	$ 304,586	$ 293,726
Diluted share (in usd per share)	$ 0.68	$ 0.59	$ 0.36	$ 0.30	$ 0.65	$ 0.55	$ 0.54	$ 0.50	$ 1.91	$ 2.24	$ 1.97
Repatriation of foreign earnings				$ 200,000					$ 200,000
Tax impact of repatriation of foreign earnings				$ 11,800					12,300
Tax impact of repatriation of foreign earnings per diluted share (in usd per share)				$ 0.12
Animal Health International [Member]
Quarterly Financial Information [Line Items]
Revenues	$ 403,580	$ 406,588	$ 414,028	$ 171,922
Operating income	$ 15,034	$ 9,827	$ 10,716	1,653					$ 37,230
Pre-tax transaction costs				$ 9,302
Diluted share (in usd per share)				$ 0.09