Income Taxes - Schedule of Reconciliation of Total Income Tax Expense and Amount Computed by Statutory Federal Income Tax Rate to Income Before Taxes (Details) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Feb. 28, 2019 |
Nov. 30, 2018 |
May 31, 2018 |
Feb. 28, 2018 |
Nov. 30, 2017 |
May 31, 2019 |
May 31, 2018 |
May 31, 2017 |
|||||||
| Income Tax Expense Benefit Continuing Operations Income Tax Reconciliation [Abstract] | ||||||||||||||
| Taxes computed at federal statutory rate | $ 138 | $ 1,271 | $ 1,603 | |||||||||||
| Non-deductible expenses | 79 | 81 | 76 | |||||||||||
| Valuation allowance | (79) | 31 | 44 | |||||||||||
| TCJA | [1] | (71) | (1,354) | |||||||||||
| Foreign tax rate enactments | 50 | 6 | ||||||||||||
| State and local income taxes, net of federal benefit | 44 | 119 | 99 | |||||||||||
| Benefits from share-based payments | (18) | (60) | (55) | |||||||||||
| Uncertain tax positions | 8 | 86 | ||||||||||||
| Foreign tax credits from distributions | $ (133) | $ (12) | $ (80) | (8) | (225) | |||||||||
| Foreign operations | (1) | 25 | (5) | |||||||||||
| Corporate structuring transactions | $ (255) | (255) | [2] | (68) | [2] | |||||||||
| Goodwill impairment charge | 109 | |||||||||||||
| Other, net | (27) | (53) | (112) | |||||||||||
| PROVISION FOR INCOME TAXES (BENEFIT) | $ 90 | $ 60 | $ 115 | $ (219) | $ 1,582 | |||||||||
| Effective Tax Rate | 17.60% | (5.00%) | 34.60% | |||||||||||
| ||||||||||||||
| X | ||||||||||
- Definition Income tax rate reconciliation, change in tax cuts and jobs act, amount. No definition available.
|
| X | ||||||||||
- Definition Income tax reconciliation benefits from share based payments. No definition available.
|
| X | ||||||||||
- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign income tax expense (benefit). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible expenses. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible impairment loss. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible restructuring charges. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in income tax contingencies. Including, but not limited to, domestic tax contingency, foreign tax contingency, state and local tax contingency, and other contingencies. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign tax credit. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|