Pension and other Post Retirement Plans - Investment Strategy and Allocation (Details) - Defined benefit pension plan |
12 Months Ended |
---|---|
Dec. 31, 2021 | |
Defined Benefit Plan, Plan Assets, Category [Line Items] | |
Investments for long-term growth (as a percent) | 97.00% |
Investments for near term benefit payments (as a percent) | 3.00% |
Maximum | |
Defined Benefit Plan, Plan Assets, Category [Line Items] | |
Securities purchased in a portfolio (as a percent) | 5.00% |
Market value of issuer (as a percent) | 8.00% |
Securities less than A quality (as a percent) | 13.00% |
Mortgage and asset backed securities (as a percent) | 10.00% |