Retirement Benefits (Details 13) - Pension Benefits [Member]	12 Months Ended
	Dec. 31, 2022
Minimum | Equity Securities: Other U.S. equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	30
Minimum | Global debt securities and cash [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	15
Minimum | Private equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	0
Minimum | Alternative investments
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	10
Maximum | Equity Securities: Other U.S. equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	70
Maximum | Global debt securities and cash [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	40
Maximum | Private equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	30
Maximum | Alternative investments
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	30