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Income Taxes (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Apr. 28, 2017 | Apr. 29, 2016 | Apr. 24, 2015
Income (Loss) from Continuing Operations before Income Taxes, by Jurisdiction |  |  |
U.S. | $ (234) | $ 333 | $ 639
International | 4,836 | 4,003 | 2,847
Income before provision for income taxes | 4,602 | 4,336 | 3,486
Current tax expense: |  |  |
U.S. | 614 | 440 | 1,128
International | 840 | 835 | 502
Total current tax expense | 1,454 | 1,275 | 1,630
Deferred tax (benefit) expense: |  |  |
U.S. | (399) | (67) | (705)
International | (477) | (410) | (114)
Net deferred tax benefit | (876) | (477) | (819)
Total provision for income taxes | 578 | 798 | $ 811
Deferred tax assets: |  |  |
Net operating loss, capital loss, and credit carryforwards | 6,800 | 7,568 |
Other accrued liabilities | 658 | 619 |
Accrued compensation | 427 | 358 |
Pension and post-retirement benefits | 456 | 530 |
Stock-based compensation | 278 | 316 |
Other | 308 | 341 |
Inventory | 277 | 225 |
Federal and state benefit on uncertain tax positions | 191 | 308 |
Unrealized loss on available-for-sale securities and derivative financial instruments | 0 | 107 |
Gross deferred tax assets | 9,395 | 10,372 |
Valuation allowance | (6,311) | (7,032) |
Total deferred tax assets | 3,084 | 3,340 |
Deferred tax liabilities: |  |  |
Intangible assets | (4,943) | (5,173) |
Basis impairment | 0 | (230) |
Realized loss on derivative financial instruments | (112) | (112) |
Other | (74) | (179) |
Accumulated depreciation | (149) | (189) |
Unrealized gain on available-for-sale securities and derivative financial instruments | (18) | 0 |
Outside basis difference of subsidiaries | (112) | 0 |
Total deferred tax liabilities | (5,408) | (5,883) |
Prepaid income taxes | 475 | 365 |
Income tax receivables | 218 | 529 |
Tax liabilities, net | (1,631) | (1,649) |
Reported as (after valuation allowance and jurisdictional netting): |  |  |
Prepaid expenses and other current assets | 545 | 697 |
Tax assets | 1,509 | 1,383 |
Deferred tax liabilities | (2,978) | (3,729) |
Noncurrent liabilities held for sale | $ (707) | $ 0 |
Effective Income Tax Rate Reconciliation |  |  |
U.S. federal statutory tax rate | 35.00% | 35.00% | 35.00%
Increase (decrease) in tax rate resulting from: |  |  |
U.S. state taxes, net of federal tax benefit | 1.00% | 0.90% | 0.80%
Research and development credit | (0.90%) | (1.20%) | (0.70%)
Domestic production activities | (0.40%) | (0.30%) | (0.40%)
International | (27.10%) | (23.40%) | (24.30%)
Puerto Rico Excise Tax | (1.50%) | (1.60%) | (1.70%)
Impact of adjustments | 5.70% | 11.40% | 13.30%
Valuation allowance release | (1.00%) | (0.90%) | 0.00%
Other, net | 1.80% | (1.50%) | 1.30%
Effective tax rate | 12.60% | 18.40% | 23.30%
Unrecognized Tax Benefits Reconciliation |  |  |
Gross unrecognized tax benefits at beginning of fiscal year | $ 2,703 | $ 2,860 | $ 1,172
Gross increases: |  |  |
Prior year tax positions | 147 | 36 | 331
Current year tax positions | 75 | 202 | 231
Acquisitions | 4 | 0 | 1,199
Acquisitions |  |  |
Prior year tax positions | (538) | (116) | (40)
Settlements | (467) | (275) | (33)
Statute of limitation lapses | (28) | (4) | 0
Gross unrecognized tax benefits at end of fiscal year | 1,896 | 2,703 | 2,860
Cash advance paid in connection with proposed settlements | 0 | (384) | (378)
Gross unrecognized tax benefits at end of fiscal year, net of cash advance | $ 1,896 | $ 2,319 | $ 2,482

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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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- Definition Amount of increase in unrecognized tax benefits resulting from acquisitions. + References No definition available. + Details
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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