Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jul. 31, 2012	Jul. 31, 2011
Cash flows from operating activities:
Net income	$ 147.5	$ 118.1
Adjustments to reconcile net income to net cash provided by operations:
Depreciation and amortization	11.5	13.0
Stock-based compensation expense	2.4	2.2
Deferred income taxes	28.4	(2.8)
Changes in assets and liabilities	(102.2)	(66.5)
Cash provided by operating activities	87.6	64.0
Cash flows from investing activities:
Additions to property, plant, and equipment	(17.4)	(6.2)
Acquisition of brand names and trademarks		(7.0)
Computer software expenditures	(0.1)	(0.5)
Cash used for investing activities	(17.5)	(13.7)
Cash flows from financing activities:
Net increase in short-term borrowings	2.2	1.9
Repayment of long-term debt	(0.6)	(0.8)
Net payments related to exercise of stock-based awards	(4.0)	(1.8)
Excess tax benefits from stock-based awards	7.6	4.4
Acquisition of treasury stock		(18.4)
Dividends paid	(49.8)	(46.4)
Cash used for financing activities	(44.6)	(61.1)
Effect of exchange rate changes on cash and cash equivalents	(2.3)	(3.8)
Net (decrease) increase in cash and cash equivalents	23.2	(14.6)
Cash and cash equivalents, beginning of period	338.3	567.1
Cash and cash equivalents, end of period	$ 361.5	$ 552.5