Employee Benefit Plans - Schedule of Assumptions Used for Net Periodic Cost (Details) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Pension Benefits | |||
| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | |||
| Discount rate | 3.43% | 2.99% | 3.24% |
| Expected long-term return on plan assets | 5.48% | 5.94% | 6.26% |
| Other Postretirement Benefits | |||
| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | |||
| Discount rate | 3.92% | 3.32% | 3.72% |