Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Cash flows from operating activities:
Net income	$ 524	$ 545
Adjustments to reconcile net income to net cash provided by operations:
Depreciation and amortization	42	40
Stock-based compensation expense	10	12
Deferred income taxes	(11)	12
Changes in assets and liabilities, excluding the effects of acquisition of business	(120)	(161)
Cash provided by operating activities	445	448
Cash flows from investing activities:
Acquisition of business, net of cash acquired	(307)	0
Additions to property, plant, and equipment	(71)	(88)
Computer software expenditures	(2)	(2)
Cash used for investing activities	(380)	(90)
Cash flows from financing activities:
Net change in short-term borrowings	(24)	319
Repayment of long-term debt	0	(250)
Proceeds from long-term debt	717	490
Debt issuance costs	(5)	(5)
Net payments related to exercise of stock-based awards	(5)	(8)
Excess tax benefits from stock-based awards	0	15
Acquisition of treasury stock	(561)	(762)
Dividends paid	(203)	(199)
Repayment of short-term obligation associated with acquisition of business (Note 14)	(30)	0
Cash used for financing activities	(111)	(400)
Effect of exchange rate changes on cash and cash equivalents	(20)	(11)
Net decrease in cash and cash equivalents	(66)	(53)
Cash and cash equivalents, beginning of period	263	370
Cash and cash equivalents, end of period	$ 197	$ 317