| Item | Type | Period | Balance | Description | | Retirement Benefits | text | | | |
| Retirement Benefits | | duration | | The entire disclosure for retirement benefits. |
| Disclosure Text Block Supplement | text | | | |
| Table Text Block Supplement | text | | | |
| text | | | |
| Defined Contribution Plan | text | | | |
| Multiemployer Plan | text | | | |
| Retirement Benefits, Description | text | | | |
| Compensation and Employee Benefit Plans | | duration | | The entire disclosure for an entity's employee compensation and benefit plans, including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, share-based compensation, life insurance, severance, health care, unemployment and other benefit plans. |
| | duration | | |
| Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures | text | | | |
| Defined Benefit Plan | | duration | | The entire disclosure for defined benefit plan. |
| Defined Contribution Plan | | duration | | The entire disclosure for defined contribution plan. |
| Multiemployer Plan | | duration | | The entire disclosure for multiemployer plan. |
| text | | | |
| Multiple-Employer Plan Accounted for as Multiemployer Plan | text | | | |
| Coal Industry Retiree Health Benefit Act of 1992 | text | | | |
| Pension Cost (Reversal of Cost) | $ | duration | debit | Amount of cost (reversal of cost) for pension benefits. Excludes other postretirement benefits. |
| Other Postretirement Benefits Cost (Reversal of Cost) | $ | duration | debit | Amount of cost (reversal of cost) for other postretirement benefits. Excludes pension benefits. |
| text | | | |
| Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures | text | | | Disclosure of information about defined benefit pension plans or other postretirement defined benefit plans. The arrangements are generally based on terms and conditions stipulated by the entity, and which contain a promise by the employer to pay certain amounts or awards at designated future dates, including a period after retirement, upon compliance with stipulated requirements. Excludes disclosures pertaining to defined contribution plans. |