Retirement Benefits Plan Asset Allocation (Details 6)	Dec. 31, 2023
Cash and cash equivalents | Minimum
Plan Asset Allocation Ranges (Table Amounts) [Abstract]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	0.00%
Cash and cash equivalents | Maximum [Member]
Plan Asset Allocation Ranges (Table Amounts) [Abstract]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	12.00%
Global public equities | Minimum
Plan Asset Allocation Ranges (Table Amounts) [Abstract]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	21.00%
Global public equities | Maximum [Member]
Plan Asset Allocation Ranges (Table Amounts) [Abstract]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	41.00%
Fixed-income securities | Minimum
Plan Asset Allocation Ranges (Table Amounts) [Abstract]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	35.00%
Fixed-income securities | Maximum [Member]
Plan Asset Allocation Ranges (Table Amounts) [Abstract]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	55.00%
Alternative investments | Minimum
Plan Asset Allocation Ranges (Table Amounts) [Abstract]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	12.00%
Alternative investments | Maximum [Member]
Plan Asset Allocation Ranges (Table Amounts) [Abstract]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	32.00%