Lease Commitments - Schedule of Future Expected Lease Payments (Details) $ in Thousands	Sep. 30, 2023 USD ($)
Financing
Remainder of 2023	$ 2,646
2024	9,088
2025	7,004
2026	5,309
2027	2,798
Later years	1,605
Total minimum lease payments	28,450
Less: Imputed interest	2,151
Lease liabilities	26,299
Battery Storage
Battery Storage
Remainder of 2023	409
2024	9,099
2025	8,203
2026	7,100
2027	7,028
Later years	17,619
Total minimum lease payments	49,458
Less: Imputed interest	6,842
Lease liabilities	42,616
Other
Battery Storage
Remainder of 2023	2,947
2024	11,786
2025	11,786
2026	11,786
2027	11,786
Later years	184,041
Total minimum lease payments	234,132
Less: Imputed interest	95,916
Lease liabilities	138,216
PNM
Financing
Remainder of 2023	1,344
2024	4,510
2025	3,522
2026	3,010
2027	1,788
Later years	1,386
Total minimum lease payments	15,560
Less: Imputed interest	1,333
Lease liabilities	14,227
PNM \| Battery Storage
Battery Storage
Remainder of 2023	145
2024	8,154
2025	7,433
2026	7,024
2027	7,028
Later years	17,619
Total minimum lease payments	47,403
Less: Imputed interest	6,736
Lease liabilities	40,667
PNM \| Other
Battery Storage
Remainder of 2023	2,947
2024	11,786
2025	11,786
2026	11,786
2027	11,786
Later years	184,041
Total minimum lease payments	234,132
Less: Imputed interest	95,916
Lease liabilities	138,216
TNMP
Financing
Remainder of 2023	1,298
2024	4,564
2025	3,480
2026	2,299
2027	1,010
Later years	219
Total minimum lease payments	12,870
Less: Imputed interest	818
Lease liabilities	12,052
Battery Storage
Remainder of 2023	264
2024	945
2025	770
2026	76
2027	0
Later years	0
Total minimum lease payments	2,055
Less: Imputed interest	105
Lease liabilities	$ 1,950

Finance Lease, Liability, to be Paid, after Year Four

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Lessee, Operating Lease, Liability, to be Paid, after Year Four

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- Definition

Present value of lessee's discounted obligation for lease payments from finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479041/842-20-45-1

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Amount of lessee's undiscounted obligation for lease payments for finance lease.

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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- Definition

Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in remainder of current fiscal year.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-6

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Amount of lessee's undiscounted obligation for lease payment for operating lease.

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease having initial or remaining lease term in excess of one year to be paid in remainder of current fiscal year.

+ References

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Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479041/842-20-45-1

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