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Guarantor Financial Information - Consolidating Statement of Comprehensive Income (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jan. 29, 2016 | Jan. 23, 2015 | Jan. 29, 2016 | Jan. 23, 2015
Condensed Statement of Income Captions [Line Items] |  |  |  |
Net sales | $ 6,934 | $ 4,318 | $ 21,266 | $ 12,957
Costs and expenses: |  |  |  |
Cost of products sold | 2,141 | 1,128 | 6,779 | 3,375
Research and development expense | 546 | 373 | 1,649 | 1,112
Selling, general, and administrative expense | 2,317 | 1,487 | 7,109 | 4,500
Special (gains) charges, net | 0 | (138) | 0 | (38)
Restructuring charges, net | 19 | 0 | 159 | 30
Certain litigation charges | 0 | 0 | 26 | 0
Acquisition-related items | 63 | 80 | 183 | 182
Amortization of intangible assets | 484 | 89 | 1,448 | 265
Other (income) expense, net | 9 | 24 | 127 | 138
Operating profit | 1,355 | 1,275 | 3,786 | 3,393
Interest income | (99) | (95) | (321) | (274)
Interest expense | 275 | 176 | 905 | 368
Interest expense, net | 176 | 81 | 584 | 94
Equity in net (income) loss of subsidiaries | 0 | 0 | 0 | 0
Income from operations before income taxes | 1,179 | 1,194 | 3,202 | 3,299
Provision (benefit) for income taxes | 84 | 217 | 767 | 623
Net income | 1,095 | 977 | 2,435 | 2,676
Other comprehensive income (loss), net of tax | (1,494) | (155) | (1,781) | (64)
Comprehensive (loss) income | (399) | 822 | 654 | 2,612
Consolidating Adjustments [Member] | Medtronic Notes [Member] |  |  |  |
Condensed Statement of Income Captions [Line Items] |  |  |  |
Net sales | (349) | (301) | (1,085) | (913)
Costs and expenses: |  |  |  |
Cost of products sold | (362) | (302) | (1,063) | (908)
Research and development expense | 0 | 0 | 0 | 0
Selling, general, and administrative expense | 0 | 0 | 0 | 0
Special (gains) charges, net |  | 0 |  | 0
Restructuring charges, net | 0 |  | 0 | 0
Certain litigation charges | 0 |  | 0 |
Acquisition-related items | 0 | 0 | 0 | 0
Amortization of intangible assets | 0 | 0 | 0 | 0
Other (income) expense, net | 0 | 0 | 0 | 0
Operating profit | 13 | 1 | (22) | (5)
Interest income | 231 | 1 | 717 | 1
Interest expense | (231) | (1) | (717) | (1)
Interest expense, net | 0 | 0 | 0 | 0
Equity in net (income) loss of subsidiaries | 2,320 | 975 | (194) | 3,001
Income from operations before income taxes | (2,307) | (974) | 172 | (3,006)
Provision (benefit) for income taxes | 0 | 0 | 0 | 0
Net income | (2,307) | (974) | 172 | (3,006)
Other comprehensive income (loss), net of tax | 2,947 | (34) | 3,562 | (1)
Comprehensive (loss) income | 640 | (1,008) | 3,734 | (3,007)
Consolidating Adjustments [Member] | CIFSA Notes [Member] |  |  |  |
Condensed Statement of Income Captions [Line Items] |  |  |  |
Net sales | 0 |  | 0 |
Costs and expenses: |  |  |  |
Cost of products sold | 0 |  | 0 |
Research and development expense | 0 |  | 0 |
Selling, general, and administrative expense | 0 |  | 0 |
Restructuring charges, net | 0 |  | 0 |
Certain litigation charges | 0 |  | 0 |
Acquisition-related items | 0 |  | 0 |
Amortization of intangible assets | 0 |  | 0 |
Other (income) expense, net | 0 |  | 0 |
Operating profit | 0 |  | 0 |
Interest income | 288 |  | 964 |
Interest expense | (288) |  | (964) |
Interest expense, net | 0 |  | 0 |
Equity in net (income) loss of subsidiaries | 2,687 |  | 12,392 |
Income from operations before income taxes | (2,687) |  | (12,392) |
Provision (benefit) for income taxes | 0 |  | 0 |
Net income | (2,687) |  | (12,392) |
Other comprehensive income (loss), net of tax | 2,925 |  | 3,562 |
Comprehensive (loss) income | 238 |  | (8,830) |
Parent Company Guarantor (Medtronic plc) [Member] | Medtronic Notes [Member] |  |  |  |
Condensed Statement of Income Captions [Line Items] |  |  |  |
Net sales | 0 | 0 | 0 | 0
Costs and expenses: |  |  |  |
Cost of products sold | 0 | 0 | 0 | 0
Research and development expense | 0 | 0 | 0 | 0
Selling, general, and administrative expense | 31 | 0 | 93 | 0
Special (gains) charges, net |  | 0 |  | 0
Restructuring charges, net | 0 |  | 0 | 0
Certain litigation charges | 0 |  | 0 |
Acquisition-related items | 0 | 0 | 0 | 0
Amortization of intangible assets | 0 | 0 | 0 | 0
Other (income) expense, net | 0 | 0 | 0 | 0
Operating profit | (31) | 0 | (93) | 0
Interest income | 0 | 0 | 0 | 0
Interest expense | 7 | 0 | 12 | 0
Interest expense, net | 7 | 0 | 12 | 0
Equity in net (income) loss of subsidiaries | (1,130) | 0 | (2,529) | 0
Income from operations before income taxes | 1,092 | 0 | 2,424 | 0
Provision (benefit) for income taxes | (3) | 0 | (11) | 0
Net income | 1,095 | 0 | 2,435 | 0
Other comprehensive income (loss), net of tax | (1,494) | 0 | (1,781) | 0
Comprehensive (loss) income | (399) | 0 | 654 | 0
Parent Company Guarantor (Medtronic plc) [Member] | CIFSA Notes [Member] |  |  |  |
Condensed Statement of Income Captions [Line Items] |  |  |  |
Net sales | 0 |  | 0 |
Costs and expenses: |  |  |  |
Cost of products sold | 0 |  | 0 |
Research and development expense | 0 |  | 0 |
Selling, general, and administrative expense | 31 |  | 93 |
Restructuring charges, net | 0 |  | 0 |
Certain litigation charges | 0 |  | 0 |
Acquisition-related items | 0 |  | 0 |
Amortization of intangible assets | 0 |  | 0 |
Other (income) expense, net | 0 |  | 0 |
Operating profit | (31) |  | (93) |
Interest income | 0 |  | 0 |
Interest expense | 7 |  | 12 |
Interest expense, net | 7 |  | 12 |
Equity in net (income) loss of subsidiaries | (1,130) |  | (2,529) |
Income from operations before income taxes | 1,092 |  | 2,424 |
Provision (benefit) for income taxes | (3) |  | (11) |
Net income | 1,095 |  | 2,435 |
Other comprehensive income (loss), net of tax | (1,494) |  | (1,781) |
Comprehensive (loss) income | (399) |  | 654 |
Subsidiary Issuer [Member] | Medtronic Notes [Member] |  |  |  |
Condensed Statement of Income Captions [Line Items] |  |  |  |
Net sales | 349 | 301 | 1,085 | 913
Costs and expenses: |  |  |  |
Cost of products sold | 242 | 214 | 753 | 655
Research and development expense | 66 | 69 | 348 | 303
Selling, general, and administrative expense | 79 | 178 | 228 | 661
Special (gains) charges, net |  | (98) |  | 2
Restructuring charges, net | 0 |  | 4 | 0
Certain litigation charges | 0 |  | 0 |
Acquisition-related items | 36 | 76 | 91 | 180
Amortization of intangible assets | 3 | 3 | 9 | 9
Other (income) expense, net | (280) | (370) | (859) | (903)
Operating profit | 203 | 229 | 511 | 6
Interest income | (58) | 0 | (179) | 0
Interest expense | 408 | 166 | 1,307 | 339
Interest expense, net | 350 | 166 | 1,128 | 339
Equity in net (income) loss of subsidiaries | (228) | (975) | 4,729 | (3,001)
Income from operations before income taxes | 81 | 1,038 | (5,346) | 2,668
Provision (benefit) for income taxes | (16) | 61 | (94) | (8)
Net income | 97 | 977 | (5,252) | 2,676
Other comprehensive income (loss), net of tax | (120) | (155) | (367) | (64)
Comprehensive (loss) income | (23) | 822 | (5,619) | 2,612
Subsidiary Issuer [Member] | CIFSA Notes [Member] |  |  |  |
Condensed Statement of Income Captions [Line Items] |  |  |  |
Net sales | 0 |  | 0 |
Costs and expenses: |  |  |  |
Cost of products sold | 0 |  | 0 |
Research and development expense | 0 |  | 0 |
Selling, general, and administrative expense | 0 |  | 0 |
Restructuring charges, net | 0 |  | 0 |
Certain litigation charges | 0 |  | 0 |
Acquisition-related items | 0 |  | 0 |
Amortization of intangible assets | 0 |  | 0 |
Other (income) expense, net | 0 |  | 1 |
Operating profit | 0 |  | (1) |
Interest income | (112) |  | (422) |
Interest expense | 41 |  | 100 |
Interest expense, net | (71) |  | (322) |
Equity in net (income) loss of subsidiaries | (585) |  | (7,847) |
Income from operations before income taxes | 656 |  | 8,168 |
Provision (benefit) for income taxes | 0 |  | 0 |
Net income | 656 |  | 8,168 |
Other comprehensive income (loss), net of tax | (40) |  | (103) |
Comprehensive (loss) income | 616 |  | 8,065 |
Subsidiary Guarantors [Member] | Medtronic Notes [Member] |  |  |  |
Condensed Statement of Income Captions [Line Items] |  |  |  |
Net sales | 0 | 0 | 0 | 0
Costs and expenses: |  |  |  |
Cost of products sold | 0 | 0 | 0 | 0
Research and development expense | 0 | 0 | 0 | 0
Selling, general, and administrative expense | 0 | 0 | 0 | 0
Special (gains) charges, net |  | 0 |  | 0
Restructuring charges, net | 0 |  | 0 | 0
Certain litigation charges | 0 |  | 0 |
Acquisition-related items | 0 | 0 | 0 | 0
Amortization of intangible assets | 0 | 0 | 0 | 0
Other (income) expense, net | 0 | 0 | 0 | 0
Operating profit | 0 | 0 | 0 | 0
Interest income | (173) | 0 | (531) | 0
Interest expense | 3 | 0 | 6 | 0
Interest expense, net | (170) | 0 | (525) | 0
Equity in net (income) loss of subsidiaries | (962) | 0 | (2,006) | 0
Income from operations before income taxes | 1,132 | 0 | 2,531 | 0
Provision (benefit) for income taxes | 2 | 0 | 2 | 0
Net income | 1,130 | 0 | 2,529 | 0
Other comprehensive income (loss), net of tax | (1,615) | 0 | (1,781) | 0
Comprehensive (loss) income | (485) | 0 | 748 | 0
Subsidiary Guarantors [Member] | CIFSA Notes [Member] |  |  |  |
Condensed Statement of Income Captions [Line Items] |  |  |  |
Net sales | 0 |  | 0 |
Costs and expenses: |  |  |  |
Cost of products sold | 0 |  | 0 |
Research and development expense | 0 |  | 0 |
Selling, general, and administrative expense | 3 |  | 3 |
Restructuring charges, net | 0 |  | 0 |
Certain litigation charges | 0 |  | 0 |
Acquisition-related items | 0 |  | 0 |
Amortization of intangible assets | 0 |  | 0 |
Other (income) expense, net | 11 |  | 11 |
Operating profit | (14) |  | (14) |
Interest income | (175) |  | (533) |
Interest expense | 3 |  | 6 |
Interest expense, net | (172) |  | (527) |
Equity in net (income) loss of subsidiaries | (972) |  | (2,016) |
Income from operations before income taxes | 1,130 |  | 2,529 |
Provision (benefit) for income taxes | 0 |  | 0 |
Net income | 1,130 |  | 2,529 |
Other comprehensive income (loss), net of tax | (1,494) |  | (1,781) |
Comprehensive (loss) income | (364) |  | 748 |
Subsidiary Non-guarantors [Member] | Medtronic Notes [Member] |  |  |  |
Condensed Statement of Income Captions [Line Items] |  |  |  |
Net sales | 6,934 | 4,318 | 21,266 | 12,957
Costs and expenses: |  |  |  |
Cost of products sold | 2,261 | 1,216 | 7,089 | 3,628
Research and development expense | 480 | 304 | 1,301 | 809
Selling, general, and administrative expense | 2,207 | 1,309 | 6,788 | 3,839
Special (gains) charges, net |  | (40) |  | (40)
Restructuring charges, net | 19 |  | 155 | 30
Certain litigation charges | 0 |  | 26 |
Acquisition-related items | 27 | 4 | 92 | 2
Amortization of intangible assets | 481 | 86 | 1,439 | 256
Other (income) expense, net | 289 | 394 | 986 | 1,041
Operating profit | 1,170 | 1,045 | 3,390 | 3,392
Interest income | (99) | (96) | (328) | (275)
Interest expense | 88 | 11 | 297 | 30
Interest expense, net | (11) | (85) | (31) | (245)
Equity in net (income) loss of subsidiaries | 0 | 0 | 0 | 0
Income from operations before income taxes | 1,181 | 1,130 | 3,421 | 3,637
Provision (benefit) for income taxes | 101 | 156 | 870 | 631
Net income | 1,080 | 974 | 2,551 | 3,006
Other comprehensive income (loss), net of tax | (1,212) | 34 | (1,414) | 1
Comprehensive (loss) income | (132) | $ 1,008 | 1,137 | $ 3,007
Subsidiary Non-guarantors [Member] | CIFSA Notes [Member] |  |  |  |
Condensed Statement of Income Captions [Line Items] |  |  |  |
Net sales | 6,934 |  | 21,266 |
Costs and expenses: |  |  |  |
Cost of products sold | 2,141 |  | 6,779 |
Research and development expense | 546 |  | 1,649 |
Selling, general, and administrative expense | 2,283 |  | 7,013 |
Restructuring charges, net | 19 |  | 159 |
Certain litigation charges | 0 |  | 26 |
Acquisition-related items | 63 |  | 183 |
Amortization of intangible assets | 484 |  | 1,448 |
Other (income) expense, net | (2) |  | 115 |
Operating profit | 1,400 |  | 3,894 |
Interest income | (100) |  | (330) |
Interest expense | 512 |  | 1,751 |
Interest expense, net | 412 |  | 1,421 |
Equity in net (income) loss of subsidiaries | 0 |  | 0 |
Income from operations before income taxes | 988 |  | 2,473 |
Provision (benefit) for income taxes | 87 |  | 778 |
Net income | 901 |  | 1,695 |
Other comprehensive income (loss), net of tax | (1,391) |  | (1,678) |
Comprehensive (loss) income | $ (490) |  | $ 17 |

X
- Definition The following items are included within acquisition-related items: The change in the fair value of the contingent milestone consideration for the reporting period, certain-related acquisition costs, such as banker fees, legal fees, severance, and other professional fees, and impairment losses of recently acquired in-process research and development (IPR&D). + References No definition available. + Details
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