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Employee Benefit Plans (Tables)
 12 Months Ended
Dec. 31, 2022
Retirement Benefits [Abstract]  
Schedule of Changes in Accumulated Postretirement Benefits Obligations
Changes in Accumulated Postretirement Benefit Obligations:20222021
Obligation at the Beginning of Year$1,592 $1,634 
Unrecognized Loss (Gain)(71)(68)
Components of Net Periodic Postretirement Benefit Cost
Service Cost105 119 
Interest Cost35 28 
Net Expected Benefit Payments(131)(121)
Amendments— — 
Obligation at End of Year$1,530 $1,592 
Schedule of Components of Postretirement Benefit Expense
Components of Postretirement Benefit Expense:202220212020
Service Cost$105 $119 $110 
Interest Cost35 28 41 
Amortization of Prior Service Costs(2)(2)2 
Amortization of Unrecognized Net (Gain) Loss43 55 64 
Net Postretirement Benefit Expense181 200 217 
Net Gain (Loss) During Period Recognized in Other Comprehensive Income (Loss)(112)(121)15 
Total Recognized in Net Postretirement Benefit Expense and Other Comprehensive Income$69 $79 $232 
Schedule of Assumptions Used to Determine Net Periodic Cost and Benefit Obligations
Assumptions Used to Determine Net Periodic Cost and Benefit Obligations:202220212020
Discount Rate4.83 %2.31 %1.81 %
Schedule of Assumption of Health Care Cost Trend Rates at Year-end
Assumed Health Care Cost Trend Rates at Year-end:20222021
Health Care Cost Trend Rate Assumed for Next Year7.50 %8.00 %
Rate that the Cost Trend Rate Gradually Declines to4.50 %4.50 %
Year that the Rate Reaches the Rate it is Assumed to Remain at20282028
Schedule of Estimated Future Benefits
The following postretirement benefit payments, which reflect expected future service, are expected to be paid:
2023$142 
2024131 
2025133 
2026159 
2027172 
2028-2032857