Pension and Other Postretirement Benefit Plans Actuarial Assumptions Used to Determine the Actuarial Present Value of Projected Benefit Obligation and Net Periodic Pensions Costs (Details)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Compensation And Retirement Disclosure [Abstract]
Weighted average assumed discount rate	1050.00%	1750.00%
Expected long-term rate of return on plan assets	1050.00%	1750.00%
Weighted average rate of compensation increase	1.80%	2.80%

Defined Benefit Plan, Weighted Average Assumptions Used Calculating Benefit Obligation and Net Periodic Benefit Cost, Rate of Compensation Increase.

No definition available.

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