Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jul. 31, 2014	Jul. 31, 2013
Cash flows from operating activities:
Net income	$ 150	$ 143
Adjustments to reconcile net income to net cash provided by operations:
Depreciation and amortization	13	12
Stock-based compensation expense	3	3
Deferred income taxes	1	12
Changes in assets and liabilities	(55)	(77)
Cash provided by operating activities	112	93
Cash flows from investing activities:
Additions to property, plant, and equipment	(31)	(25)
Cash used for investing activities	(31)	(25)
Cash flows from financing activities:
Net increase in short-term borrowings	5	2
Repayment of long-term debt	0	(1)
Net payments related to exercise of stock-based awards	(4)	(3)
Excess tax benefits from stock-based awards	16	6
Acquisition of treasury stock	(12)	(1)
Dividends paid	(62)	(54)
Cash used for financing activities	(57)	(51)
Effect of exchange rate changes on cash and cash equivalents	(1)	(4)
Net increase (decrease) in cash and cash equivalents	23	13
Cash and cash equivalents, beginning of period	437	204
Cash and cash equivalents, end of period	$ 460	$ 217