Post Employment Benefit Plans (Details) |
9 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
Sep. 11, 2014 |
Oct. 02, 2020 |
Dec. 31, 2020
USD ($)
|
Dec. 31, 2019
USD ($)
|
Dec. 31, 2018
USD ($)
|
|
| Retirement Benefits [Abstract] | |||||
| Number of defined contribution plan | 2 | ||||
| Portion of contributions charged to income | $ 6,500,000 | $ 6,800,000 | |||
| Multiemployer plan, employer contribution | 3,000,000.0 | $ 4,900,000 | $ 4,800,000 | ||
| Multiemployer plan, subcontract percent of total contributions | 90.00% | 90.00% | 90.00% | ||
| Benefits plan vesting percentage | 100.00% | ||||
| Benefit contributions accrued | $ 100,000 | $ 100,000 | |||