Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	9 Months Ended
Jan. 23, 2015	Jan. 24, 2014
Operating Activities:
Net earnings	$ 2,676us-gaap_NetIncomeLoss	$ 2,617us-gaap_NetIncomeLoss
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	629	635
Amortization of debt discount and issuance costs	69	6
Acquisition-related items	2	99
Provision for doubtful accounts	25us-gaap_ProvisionForDoubtfulAccounts	34us-gaap_ProvisionForDoubtfulAccounts
Deferred income taxes	(20)	(61)
Stock-based compensation	115us-gaap_ShareBasedCompensation	108us-gaap_ShareBasedCompensation
Other, net	(96)us-gaap_OtherNoncashIncomeExpense	(17)us-gaap_OtherNoncashIncomeExpense
Change in operating assets and liabilities, net of effect of acquisitions:
Accounts receivable, net	(60)	86
Inventories	(245)us-gaap_IncreaseDecreaseInInventories	(119)us-gaap_IncreaseDecreaseInInventories
Accounts payable and accrued liabilities	702	(301)
Other operating assets and liabilities	(1)	523
Certain litigation charges, net	0us-gaap_LossContingencyAccrualProvision	24us-gaap_LossContingencyAccrualProvision
Certain litigation payments	(806)us-gaap_PaymentsForLegalSettlements	(3)us-gaap_PaymentsForLegalSettlements
Net cash provided by operating activities	2,990	3,631
Investing Activities:
Acquisitions, net of cash acquired	(611)	(369)
Additions to property, plant, and equipment	(316)	(291)
Purchases of investments	(5,327)us-gaap_PaymentsToAcquireInvestments	(7,992)us-gaap_PaymentsToAcquireInvestments
Sales and maturities of investments	4,351	5,606
Other investing activities, net	60	(23)
Net cash used in investing activities	(1,843)	(3,069)
Financing Activities:
Acquisition-related contingent consideration	(5)	(1)
Change in short-term borrowings, net	7	935
Repayment of short-term borrowings (maturities greater than 90 days)	(150)	(385)
Proceeds from short-term borrowings (maturities greater than 90 days)	150	1,176
Proceeds from Issuance of Long-term Debt	16,918	0
Payments on long-term debt	(13)us-gaap_RepaymentsOfLongTermDebt	(10)us-gaap_RepaymentsOfLongTermDebt
Dividends to shareholders	(902)us-gaap_PaymentsOfDividendsCommonStock	(839)us-gaap_PaymentsOfDividendsCommonStock
Issuance of common stock	477	1,056
Repurchase of common stock	(1,620)	(2,153)
Other financing activities	(64)	20
Net cash provided by (used in) financing activities	14,798	(201)
Effect of exchange rate changes on cash and cash equivalents	(117)	24
Net change in cash and cash equivalents	15,828	385
Cash and cash equivalents at beginning of period	1,403	919
Cash and cash equivalents at end of period	17,231	1,304
Supplemental Cash Flow Information
Cash paid for income taxes	446us-gaap_IncomeTaxesPaidNet	382us-gaap_IncomeTaxesPaidNet
Cash paid for interest	$ 221us-gaap_InterestPaid	$ 226us-gaap_InterestPaid

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