Lease Commitments - Schedule of Supplemental Cash Flows Related to Leases (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 18,827	$ 25,670
Operating cash flows from financing leases	183	101
Finance cash flows from financing leases	1,836	1,249
Non-cash information related to right-of-use assets obtained in exchange for lease obligations:
Operating leases	138,884	2,924
Financing leases	9,485	5,381
PNM
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	18,714	25,503
Operating cash flows from financing leases	135	67
Finance cash flows from financing leases	1,221	810
Non-cash information related to right-of-use assets obtained in exchange for lease obligations:
Operating leases	138,878	2,924
Financing leases	5,977	3,032
TNMP
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	113	118
Operating cash flows from financing leases	47	32
Finance cash flows from financing leases	565	371
Non-cash information related to right-of-use assets obtained in exchange for lease obligations:
Operating leases	6	0
Financing leases	$ 3,508	$ 2,349