INCOME TAXES - Gross Unrecognized Tax Benefits, Including Acquisitions (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
May 31, 2019 |
May 31, 2018 |
May 31, 2017 |
|
| Gross Unrecognized Tax Benefits Including Acquisitions [Abstract] | |||
| Gross unrecognized tax benefits as of June 1 | $ 5,592 | $ 4,919 | $ 4,561 |
| Increases related to tax positions from prior fiscal years | 772 | 200 | 128 |
| Decreases related to tax positions from prior fiscal years | (135) | (65) | (218) |
| Increases related to tax positions taken during current fiscal year | 540 | 840 | 595 |
| Settlements with tax authorities | (153) | (42) | (85) |
| Lapses of statutes of limitation | (202) | (273) | (47) |
| Cumulative translation adjustments and other, net | (66) | (15) | |
| Cumulative translation adjustments and other, net | 0 | 13 | |
| Total gross unrecognized tax benefits as of May 31 | $ 6,348 | $ 5,592 | $ 4,919 |
| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
|
| X | ||||||||||
- Definition Amount of unrecognized tax benefits. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of decrease in unrecognized tax benefits resulting from foreign currency translation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of increase in unrecognized tax benefits resulting from foreign currency translation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|