Condensed Statements of Consolidated Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Jul. 31, 2012	Jul. 31, 2011
Condensed Statements of Consolidated Income [Abstract]
Net sales	$ 1,369,703	$ 1,188,883
Cost of products sold	895,966	747,373
Cost of products sold - restructuring and merger and integration	3,964	10,426
Gross Profit	469,773	431,084
Selling, distribution, and administrative expenses	232,216	216,552
Amortization	24,191	20,235
Other restructuring costs	10,910	9,897
Other merger and integration costs	6,269	4,685
Other special project costs	6,669	0
Other operating income - net	(1,007)	(988)
Operating Income	190,525	180,703
Interest income	278	302
Interest expense	(23,882)	(15,422)
Other income - net	344	1,243
Income Before Income Taxes	167,265	166,826
Income taxes	56,402	55,303
Net Income	$ 110,863	$ 111,523
Earnings per common share:
Net Income	$ 1.00	$ 0.98
Net Income - Assuming Dilution	$ 1.00	$ 0.98
Dividends declared per common share	$ 0.52	$ 0.48