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Lease Commitments - Schedule of Weighted Average Remaining Lease Terms and Discount Rates (Details)	Dec. 31, 2022	Dec. 31, 2021
Weighted average remaining lease term (years):
Operating leases	6 years 5 months 23 days	5 years 5 months 8 days
Financing leases	3 years 8 months 4 days	4 years 2 months 12 days
Weighted average discount rate:
Operating leases	4.00%	3.99%
Financing leases	3.44%	2.65%
Public Service Company of New Mexico
Weighted average remaining lease term (years):
Operating leases	6 years 8 months 26 days	5 years 7 months 6 days
Financing leases	3 years 11 months 26 days	4 years 3 months 18 days
Weighted average discount rate:
Operating leases	4.01%	3.99%
Financing leases	3.36%	2.60%
Texas-New Mexico Power Company
Weighted average remaining lease term (years):
Operating leases	2 years 1 month 28 days	2 years 10 months 24 days
Financing leases	3 years 4 months 20 days	4 years 1 month 20 days
Weighted average discount rate:
Operating leases	3.94%	3.98%
Financing leases	3.53%	2.71%

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