| 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 | | | |
| Defined Benefit Plan | 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. |
| Compensation and Employee Benefit Plans, Other than Share-Based Compensation | | duration | | The entire disclosure of an entity's employee compensation and benefit plans, excluding share-based compensation and 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, life insurance, severance, health care, unemployment and other benefit plans. |
| 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. |
| Pension and Other Postretirement Benefits Cost (Reversal of Cost) | 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. |
| Retirement Benefits, Description | text | | | Description of nature and type of retirement benefits. |
| Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures | text | | | Disclosures and provisions pertaining to 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. |