Consolidated Statements of Earnings - TNMP - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Electric Operating Revenues	$ 1,939,198	$ 2,249,555	$ 1,779,873
Operating Expenses:
Administrative and general	227,900	227,149	230,292
Regulatory disallowances and restructuring costs	71,923	832	1,194
Depreciation and amortization	319,503	304,853	284,107
Transmission and distribution costs	98,721	94,684	81,335
Taxes other than income taxes	95,940	92,989	86,008
Total operating expenses	1,707,858	1,855,795	1,471,720
Operating income	231,340	393,760	308,153
Other Income and Deductions:
Other income	24,204	21,601	20,200
Other (deductions)	(15,869)	(13,881)	(18,559)
Net other income and (deductions)	49,544	(54,542)	33,153
Interest Charges	190,355	127,908	96,877
Earnings before Income Taxes	90,529	211,310	244,429
Income Taxes	(16,350)	26,130	32,582
TNMP
Electric Operating Revenues	535,250	482,730	417,853
Operating Expenses:
Cost of energy and production costs	138,647	123,928	113,067
Administrative and general	53,963	49,592	47,820
Regulatory disallowances and restructuring costs	1,173	0	0
Depreciation and amortization	113,142	98,316	90,440
Transmission and distribution costs	36,996	36,406	31,489
Taxes other than income taxes	41,311	38,521	34,919
Total operating expenses	385,232	346,763	317,735
Operating income	150,018	135,967	100,118
Other Income and Deductions:
Other income	10,127	10,641	7,176
Other (deductions)	(1,759)	(1,988)	(1,768)
Net other income and (deductions)	8,368	8,653	5,408
Interest Charges	46,152	37,192	33,735
Earnings before Income Taxes	112,234	107,428	71,791
Income Taxes	17,297	15,161	7,912
Net earnings	$ 94,937	$ 92,267	$ 63,879