Employee Benefit Plans - Schedule of Weighted-Average Assumptions Used (Details)	3 Months Ended		12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2019	Dec. 31, 2018
Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit Cost for Current Plan Year			6.75%	6.75%
Benefit Cost for Subsequent Plan Year	6.75%		6.75%	6.75%
Discount Rates:
Service Cost for Plan Year			4.40%	3.74%
Interest Cost for Plan Year			3.87%	3.15%
Benefit Obligation at End of Plan Year	4.24%		3.13%	4.24%
Salary Scale Inflation			4.60%	4.60%
Post-retirement Benefits
Discount Rates:
Service Cost for Plan Year	4.14%	3.68%	4.14%	4.14%
Interest Cost for Plan Year	3.45%	2.79%	3.51%	3.45%
Benefit Obligation at End of Plan Year	3.98%		2.87%	3.98%