Schedule of Benefit Obligation and Net Periodic Benefit Cost for Plan (Details)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Retirement Benefits [Abstract]
Discount rate	5.00%	2.00%
Expected return on assets	5.70%	3.00%
RPI inflation	3.13%	3.25%
CPI inflation - pre 2030	2.13%	2.25%
CPI inflation - post 2030	2.93%	3.05%
Pension increases - pre-2006 service	2.90%	3.15%
Pension increases - post-2006 service	1.89%	2.20%
Pension increases - post 1988 GMP - pre 2030	1.83%	2.10%
Pension increases - post 1988 GMP - post 2030	2.21%	2.60%