Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Jul. 31, 2016	Jul. 31, 2015
Cash flows from operating activities:
Net income	$ 144	$ 156
Adjustments to reconcile net income to net cash provided by operations:
Depreciation and amortization	15	13
Stock-based compensation expense	4	3
Deferred income taxes	(11)	2
Changes in assets and liabilities, excluding the effects of acquisition of business	(24)	(27)
Cash provided by operating activities	128	147
Cash flows from investing activities:
Acquisition of business, net of cash acquired	(307)	0
Additions to property, plant, and equipment	(16)	(39)
Computer software expenditures	(1)	0
Cash used for investing activities	(324)	(39)
Cash flows from financing activities:
Net increase in short-term borrowings	(43)	(176)
Proceeds from long-term debt	717	490
Debt issuance costs	(5)	(5)
Net payments related to exercise of stock-based awards	(3)	(5)
Excess tax benefits from stock-based awards	0	12
Acquisition of treasury stock	(201)	(230)
Dividends paid	(67)	(65)
Cash provided by financing activities	398	21
Effect of exchange rate changes on cash and cash equivalents	(6)	(5)
Net increase in cash and cash equivalents	196	124
Cash and cash equivalents, beginning of period	263	370
Cash and cash equivalents, end of period	$ 459	$ 494