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Segment and Geographic Information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jan. 29, 2016 | Jan. 23, 2015 | Jan. 29, 2016 | Jan. 23, 2015
Segment Reporting Information [Line Items] |  |  |  |
Net sales | $ 6,934 | $ 4,318 | $ 21,266 | $ 12,957
Income before Income Taxes by Reportable Segment |  |  |  |
Special charges | 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)
Interest expense, net | (176) | (81) | (584) | (94)
Income from operations before income taxes | 1,179 | 1,194 | 3,202 | 3,299
Americas [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 4,229 | 2,615 | 13,064 | 7,747
U.S. [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 3,965 | 2,459 | 12,205 | 7,248
EMEA [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 1,607 | 1,074 | 4,843 | 3,276
Asia Pacific [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 729 | 403 | 2,235 | 1,270
Greater China [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 369 | 226 | 1,124 | 664
Operating Segments [Member] |  |  |  |
Income before Income Taxes by Reportable Segment |  |  |  |
Income from operations before income taxes | 1,644 | 1,348 | 5,100 | 3,847
Segment Reconciling Items [Member] |  |  |  |
Income before Income Taxes by Reportable Segment |  |  |  |
Special charges | 0 | 138 | 0 | 38
Impact of inventory step-up | 0 | 0 | (226) | 0
Restructuring charges, net | (19) | 0 | (159) | (30)
Certain litigation charges | 0 | 0 | (26) | 0
Acquisition-related items | (63) | (80) | (183) | (182)
Interest expense, net | (176) | (81) | (584) | (94)
Corporate, Non-Segment [Member] |  |  |  |
Income before Income Taxes by Reportable Segment |  |  |  |
Corporate | (207) | (131) | (720) | (280)
Cardiac and Vascular Group [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 2,410 | 2,224 | 7,460 | 6,765
Cardiac and Vascular Group [Member] | Operating Segments [Member] |  |  |  |
Income before Income Taxes by Reportable Segment |  |  |  |
Income from operations before income taxes | 726 | 722 | 2,298 | 2,148
Minimally Invasive Therapies Group [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 2,291 | 0 | 7,103 | 0
Minimally Invasive Therapies Group [Member] | Operating Segments [Member] |  |  |  |
Income before Income Taxes by Reportable Segment |  |  |  |
Income from operations before income taxes | 282 | 0 | 963 | 0
Restorative Therapies Group [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 1,759 | 1,645 | 5,335 | 4,897
Restorative Therapies Group [Member] | Operating Segments [Member] |  |  |  |
Income before Income Taxes by Reportable Segment |  |  |  |
Income from operations before income taxes | 496 | 482 | 1,460 | 1,318
Diabetes Group [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 474 | 449 | 1,368 | 1,295
Diabetes Group [Member] | Operating Segments [Member] |  |  |  |
Income before Income Taxes by Reportable Segment |  |  |  |
Income from operations before income taxes | $ 140 | $ 144 | $ 379 | $ 381

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- 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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