Condensed Statements of Consolidated Cash Flows (Unaudited) (USD $) In Thousands	3 Months Ended
	Jul. 31, 2011	Jul. 31, 2010
OPERATING ACTIVITIES
Net income	$ 111,523	$ 102,881
Adjustments to reconcile net income to net cash used for operating activities:
Depreciation	27,569	29,360
Depreciation - restructuring and merger and integration	10,415	9,453
Amortization	20,235	18,497
Share-based compensation expense	6,032	5,328
Other noncash restructuring charges	909	3,849
Loss on sale of assets - net	725	134
Changes in assets and liabilities, net of effect from business acquired:
Trade receivables	7,512	(66,958)
Inventories	(330,854)	(111,907)
Accounts payable and accrued items	55,380	32,969
Defined benefit pension contributions	(3,691)	(10,544)
Income taxes	30,616	(43,555)
Other - net	5,391	3,255
Net cash used for operating activities	(58,238)	(27,238)
INVESTING ACTIVITIES
Business acquired, net of cash acquired	(362,846)	0
Additions to property, plant, and equipment	(67,632)	(26,946)
Sale and maturity of marketable securities	18,600	0
Purchases of marketable securities	0	(57,037)
Proceeds from disposal of property, plant, and equipment	130	290
Other - net	(18)	40
Net cash used for investing activities	(411,766)	(83,653)
FINANCING ACTIVITIES
Revolving credit agreement - net	306,700	0
Proceeds from long-term debt	0	400,000
Quarterly dividends paid	(50,159)	(47,594)
Purchase of treasury shares	(5,385)	(5,033)
Proceeds from stock option exercises	242	1,325
Other - net	2,534	2,213
Net cash provided by financing activities	253,932	350,911
Effect of exchange rate changes	(1,298)	(817)
Net (decrease) increase in cash and cash equivalents	(217,370)	239,203
Cash and cash equivalents at beginning of period	319,845	283,570
Cash and cash equivalents at end of period	$ 102,475	$ 522,773