Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Cash flows from operating activities:
Net income	$ 607	$ 524
Adjustments to reconcile net income to net cash provided by operations:
Depreciation and amortization	48	42
Stock-based compensation expense	14	10
Deferred income taxes	(32)	(11)
Changes in assets and liabilities, excluding the effects of acquisition of business	(75)	(120)
Cash provided by operating activities	562	445
Cash flows from investing activities:
Acquisition of business, net of cash acquired	0	(307)
Additions to property, plant, and equipment	(100)	(71)
Computer software expenditures	(1)	(2)
Cash used for investing activities	(101)	(380)
Cash flows from financing activities:
Net change in short-term borrowings	111	(24)
Repayment of long-term debt	(250)	0
Proceeds from long-term debt	0	717
Debt issuance costs	0	(5)
Net payments related to exercise of stock-based awards	(24)	(5)
Acquisition of treasury stock	(1)	(561)
Dividends paid	(216)	(203)
Repayment of short-term obligation associated with acquisition of business	0	(30)
Cash used for financing activities	(380)	(111)
Effect of exchange rate changes on cash and cash equivalents	24	(20)
Net increase (decrease) in cash and cash equivalents	105	(66)
Cash and cash equivalents, beginning of period	182	263
Cash and cash equivalents, end of period	$ 287	$ 197