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Financing Arrangements , Additional Information (Details) - USD ($) |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jan. 26, 2015 | Apr. 29, 2016 | Apr. 28, 2017 | Apr. 29, 2016 | Apr. 24, 2015
Debt Instrument [Line Items] |  |  |  |  |
Current debt obligations |  | $ 993,000,000 | $ 7,520,000,000 | $ 993,000,000 |
Loss on debt extinguishment |  |  | 0 | 163,000,000 | $ 0
Estimated fair value of senior notes |  | 29,800,000,000 | 30,400,000,000 | 29,800,000,000 |
Principal value of senior notes |  | 27,400,000,000 | 28,900,000,000 | 27,400,000,000 |
$3.5 Billion Revolving Credit Facility | Credit Facility |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Maximum borrowing capacity |  |  | $ 3,500,000,000.000 |  |
Debt term |  |  | 5 years |  |
Additional borrowing capacity |  |  | $ 500,000,000 |  |
Length of extension from maturity date |  |  | 1 year |  |
Committed line of credit outstanding |  | 0 | $ 0 | 0 |
Senior Unsecured Term Loan Credit Agreement |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt term | 3 years |  |  |  |
Proceeds from debt issuance | $ 3,000,000,000 |  |  |  |
Senior notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Redemption of senior notes, face amount |  | 2,700,000,000 |  | $ 2,700,000,000 |
Redemption of senior notes, consideration |  | 3,000,000,000 |  |  |
Loss on debt extinguishment |  | 163,000,000 |  |  |
Interest expense, acceleration of net losses on derivatives for terminations |  | $ 20,000,000 |  |  |
Senior notes | 4.125 percent ten-year 2011 senior notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Stated interest rate |  | 4.125% | 4.125% | 4.125% |
Debt term |  |  | 10 years |  |
Face value |  | $ 500,000,000 | $ 500,000,000 | $ 500,000,000 |
Senior notes | 3.125 percent ten-year 2012 senior notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Stated interest rate |  | 3.125% | 3.125% | 3.125% |
Debt term |  |  | 10 years |  |
Face value |  | $ 675,000,000 | $ 675,000,000 | $ 675,000,000 |
Commercial paper |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Weighted average original maturity |  |  | 39 days | 49 days |
Weighted average interest rate |  | 0.57% | 0.89% | 0.57% |
Commercial paper | Commercial paper |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Commercial paper, maximum borrowing capacity | $ 3,500,000,000.0 |  |  |  |
Current debt obligations |  | $ 0 | $ 901,000,000 | $ 0 |
Bank borrowings |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Current debt obligations |  | $ 387,000,000 | $ 396,000,000 | $ 387,000,000 |
Bank borrowings | Minimum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Stated interest rate |  |  | 0.17% |  |
Bank borrowings | Maximum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Stated interest rate |  |  | 0.18% |  |

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- Definition Additional borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References No definition available. + Details
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- Definition Line of Credit Facility, Length of Extension + References No definition available. + Details
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- Definition The stated principal amount of the long-term debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount. + References No definition available. + Details
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- Definition The weighted average original maturity of short-term debt outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12317-112629 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12355-112629 + Details
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- Definition Amount of the cost of borrowed funds accounted for as interest expense for debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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- Definition Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
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