SEGMENT INFORMATION (Details) - USD ($) $ in Millions |
12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
May. 31, 2015 |
May. 31, 2014 |
May. 31, 2013 |
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| Revenues Included for Management Reporting Not Recognized in Consolidated Statements of Operations (Narrative) [Abstract] | ||||||||||
| Cloud software as a service and platform as a service revenues | [1] | $ 12 | $ 17 | $ 45 | ||||||
| Software license updates and product support revenues | [1] | 11 | 3 | 14 | ||||||
| Hardware systems support revenues | [1] | 4 | 11 | 14 | ||||||
| Segment reporting information [Line Items] | ||||||||||
| Revenues | 38,226 | 38,275 | 37,180 | |||||||
| Margin | 24,221 | 24,647 | 23,945 | |||||||
| New software licenses and cloud software subscriptions [Member] | ||||||||||
| Segment reporting information [Line Items] | ||||||||||
| Revenues | [2] | 10,025 | 10,542 | 10,350 | ||||||
| Cloud software as a service and platform as a service expenses | 742 | 437 | 313 | |||||||
| Sales and distribution expenses | 5,812 | 5,666 | 5,227 | |||||||
| Margin | [3] | 3,471 | 4,439 | 4,810 | ||||||
| Cloud infrastructure as a service [Member] | ||||||||||
| Segment reporting information [Line Items] | ||||||||||
| Revenues | 608 | 456 | 457 | |||||||
| Cloud infrastructure as a service expenses | 329 | 304 | 296 | |||||||
| Sales and distribution expenses | 89 | 61 | 61 | |||||||
| Margin | [3] | 190 | 91 | 100 | ||||||
| Software license updates and product support [Member] | ||||||||||
| Segment reporting information [Line Items] | ||||||||||
| Revenues | [2] | 18,858 | 18,209 | 17,156 | ||||||
| Software license updates and product support expenses | 1,130 | 1,111 | 1,120 | |||||||
| Margin | [3] | 17,728 | 17,098 | 16,036 | ||||||
| Total software and cloud business [Member] | ||||||||||
| Segment reporting information [Line Items] | ||||||||||
| Revenues | [2] | 29,491 | 29,207 | 27,963 | ||||||
| Expenses | 8,102 | 7,579 | 7,017 | |||||||
| Margin | [3] | 21,389 | 21,628 | 20,946 | ||||||
| Hardware systems products [Member] | ||||||||||
| Segment reporting information [Line Items] | ||||||||||
| Revenues | 2,825 | 2,976 | 3,033 | |||||||
| Hardware systems products expenses | 1,465 | 1,516 | 1,498 | |||||||
| Sales and distribution expenses | 864 | 940 | 885 | |||||||
| Margin | [3] | 496 | 520 | 650 | ||||||
| Hardware systems support [Member] | ||||||||||
| Segment reporting information [Line Items] | ||||||||||
| Revenues | [2] | 2,384 | 2,407 | 2,327 | ||||||
| Hardware systems support expenses | 783 | 802 | 857 | |||||||
| Margin | [3] | 1,601 | 1,605 | 1,470 | ||||||
| Total hardware systems business [Member] | ||||||||||
| Segment reporting information [Line Items] | ||||||||||
| Revenues | [2] | 5,209 | 5,383 | 5,360 | ||||||
| Expenses | 3,112 | 3,258 | 3,240 | |||||||
| Margin | [3] | 2,097 | 2,125 | 2,120 | ||||||
| Total services business [Member] | ||||||||||
| Segment reporting information [Line Items] | ||||||||||
| Revenues | [2] | 3,553 | 3,716 | 3,930 | ||||||
| Services expenses | 2,818 | 2,822 | 3,051 | |||||||
| Margin | [3] | 735 | 894 | 879 | ||||||
| Total for operating segments [Member] | ||||||||||
| Segment reporting information [Line Items] | ||||||||||
| Revenues | [2] | 38,253 | 38,306 | 37,253 | ||||||
| Expenses | 14,032 | 13,659 | 13,308 | |||||||
| Margin | [3] | $ 24,221 | $ 24,647 | $ 23,945 | ||||||
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