Summary of Quarterly Results of Operations (Unaudited) - Summary of Unaudited Quarterly Results of Operations (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	12 Months Ended
May. 02, 2015	Jan. 31, 2015	Nov. 01, 2014	Aug. 02, 2014	May. 03, 2014	Feb. 01, 2014	Oct. 26, 2013	Jul. 27, 2013	May. 02, 2015	May. 03, 2014	Apr. 27, 2013
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 227.3	$ 206.0	$ 229.7	$ 218.1	$ 224.8	$ 189.8	$ 190.9	$ 167.3	$ 881.1	$ 772.8	$ 519.8
Gross profit	51.9	56.2	60.2	50.5	42.8	38.5	41.4	34.0	218.8	156.7	91.6
Net income attributable to Methode Electronics, Inc.	$ 26.6	$ 27.1	$ 26.0	$ 21.4	$ 48.1	$ 14.6	$ 19.8	$ 13.6	$ 101.1	$ 96.1	$ 40.7
Net income per basic common share (in dollars per share)	$ 0.69	$ 0.69	$ 0.67	$ 0.56	$ 1.27	$ 0.38	$ 0.52	$ 0.36
Net income per diluted common share (in dollars per share)	$ 0.68	$ 0.68	$ 0.66	$ 0.55	$ 1.26	$ 0.38	$ 0.51	$ 0.36

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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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.

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Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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