Retirement Plans - Schedule of Fair Value of Plan Assets for Pension Plans with a PBO or ABO in Excess of Plan Assets (Details) - Pension Plans [Member] - USD ($) $ in Millions |
May 31, 2021 |
May 31, 2020 |
||
|---|---|---|---|---|
| U.S. Plans [Member] | ||||
| Defined Benefit Plan Disclosure [Line Items] | ||||
| Fair value of plan assets | $ 29,785 | $ 26,978 | ||
| PBO | (31,423) | (30,199) | ||
| Net funded status | (1,638) | (3,221) | ||
| ABO | [1] | (29,083) | (29,272) | |
| Fair value of plan assets | 28,383 | 26,978 | ||
| PBO | (29,888) | (30,199) | ||
| Net funded status | (1,505) | (3,221) | ||
| International Pension Plans [Member] | ||||
| Defined Benefit Plan Disclosure [Line Items] | ||||
| Fair value of plan assets | 241 | 205 | ||
| PBO | (950) | (876) | ||
| Net funded status | (709) | (671) | ||
| ABO | [1] | (722) | (637) | |
| Fair value of plan assets | 206 | 175 | ||
| PBO | (908) | (840) | ||
| Net funded status | $ (702) | $ (665) | ||
| ||||
| X | ||||||||||
- Definition The funded status is measured as the difference between the fair value of plan assets and the benefit obligation. No definition available.
|
| X | ||||||||||
- Definition The funded status is measured as the difference between the fair value of plan assets and the benefit obligation. No definition available.
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Definition Amount of plan asset for defined benefit pension plan with projected benefit obligation in excess of plan assets. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of projected benefit obligation for defined benefit pension plan with projected benefit obligation in excess of plan assets. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of accumulated benefit obligation for defined benefit plan with accumulated benefit obligation in excess of plan assets. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of plan asset for defined benefit plan with accumulated benefit obligation in excess of plan assets. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of projected benefit obligation for defined benefit pension plan with accumulated benefit obligation in excess of plan assets. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|