Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Apr. 30, 2018	Apr. 30, 2017	Apr. 30, 2016
Cash flows from operating activities:
Net income	$ 717	$ 669	$ 1,067
Adjustments to reconcile net income to net cash provided by operations:
Gain on sale of business	0	0	(485)
Depreciation and amortization	64	58	56
Stock-based compensation expense	19	14	15
Deferred income taxes	(69)	(10)	10
Other, net	4	2	2
Changes in assets and liabilities, excluding the effects of sale and acquisition of businesses:
Accounts receivable	(70)	6	8
Inventories	(102)	(86)	(127)
Other current assets	29	12	(57)
Accounts payable and accrued expenses	58	(17)	29
Accrued income taxes	16	(11)	7
Noncurrent assets and liabilities	(34)	2	(1)
Cash provided by operating activities	632	639	524
Cash flows from investing activities:
Proceeds from sale of business	0	0	543
Acquisition of business, net of cash acquired	0	(307)	0
Additions to property, plant, and equipment	(127)	(112)	(108)
Computer software expenditures	(1)	(3)	(2)
Cash provided by (used for) investing activities	(128)	(422)	433
Cash flows from financing activities:
Net change in short-term borrowings	(3)	(122)	80
Repayment of long-term debt	(250)	0	(250)
Proceeds from long-term debt	595	717	490
Debt issuance costs	(6)	(5)	(5)
Net payments related to exercise of stock-based awards	(28)	(10)	(17)
Excess tax benefits from stock-based awards	0	0	15
Acquisition of treasury stock	(1)	(561)	(1,107)
Dividends paid	(773)	(274)	(266)
Repayment of short-term obligation associated with acquisition of business	0	(30)	0
Cash used for financing activities	(466)	(285)	(1,060)
Effect of exchange rate changes on cash and cash equivalents	19	(13)	(4)
Net increase (decrease) in cash and cash equivalents	57	(81)	(107)
Cash and cash equivalents, beginning of period	182	263	370
Cash and cash equivalents, end of period	239	182	263
Supplemental disclosure of cash paid for:
Interest	65	48	41
Income taxes	$ 200	$ 266	$ 430