Employee Benefit Plans - Discount Rate (Details) - U.S. |
Jun. 30, 2021 |
Mar. 31, 2021 |
Dec. 31, 2020 |
|---|---|---|---|
| Other Postretirement Benefit Plans, Defined Benefit [Member] | |||
| Defined Benefit Plan Disclosure [Line Items] | |||
| Discount Rate | 2.80% | 2.20% | |
| Qualified Plan [Member] | Pension Plans Defined Benefit [Member] | |||
| Defined Benefit Plan Disclosure [Line Items] | |||
| Discount Rate | 2.65% | 3.00% | 2.40% |
| Nonqualified Plan [Member] | Pension Plans Defined Benefit [Member] | |||
| Defined Benefit Plan Disclosure [Line Items] | |||
| Discount Rate | 2.15% | 2.40% | 1.85% |