CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015
Income Statement [Abstract]
Net sales	$ 209.3	$ 208.4	$ 401.1	$ 411.7
Cost of products sold	153.7	157.5	291.5	307.2
Gross profit	55.6	50.9	109.6	104.5
Selling and administrative expenses	26.5	24.5	54.0	47.6
Income from operations	29.1	26.4	55.6	56.9
Interest income, net	(0.1)	(0.3)	(0.1)	(0.5)
Other income, net	(1.9)	(0.2)	(1.9)	(0.5)
Income before income taxes	31.1	26.9	57.6	57.9
Income tax expense	6.2	5.7	11.7	13.1
NET INCOME ATTRIBUTABLE TO METHODE ELECTRONICS, INC.	$ 24.9	$ 21.2	$ 45.9	$ 44.8
Amounts per common share attributable to Methode Electronics, Inc.:
Basic (in dollars per share)	$ 0.66	$ 0.55	$ 1.23	$ 1.15
Diluted (in dollars per share)	0.66	0.54	1.23	1.15
Cash dividends:
Common stock (in dollars per share)	$ 0.09	$ 0.09	$ 0.18	$ 0.18
Weighted average number of Common Shares outstanding:
Basic (in shares)	37,353,423	38,972,930	37,337,985	38,913,836
Diluted (in shares)	37,541,250	39,077,839	37,494,219	39,031,424