Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash Flows From Operating Activities:
Net Earnings	$ 108,798	$ 104,159
Net earnings	97,262	92,859
Adjustments to reconcile net earnings to net cash flows from operating activities:
Depreciation and amortization	157,687	157,856
Deferred income tax expense	55,553	57,878
Net unrealized (gains) on commodity derivatives	(67)	(5,858)
Realized (gains) on available-for-sale securities	(8,234)	(6,935)
Stock based compensation expense	4,680	4,315
Regulatory disallowances	0	1,735
Other, net	(642)	1,384
Changes in certain assets and liabilities:
Accounts receivable and unbilled revenues	(22,158)	(23,731)
Materials, supplies, and fuel stock	5,494	(724)
Other current assets	(19,816)	(6,667)
Other assets	30,502	21,656
Accounts payable	79	(17,786)
Accrued interest and taxes	32,488	126,218
Other current liabilities	(21,197)	(32,111)
Other liabilities	3,074	(70,379)
Net cash flows from operating activities	326,241	311,010
Cash Flows From Investing Activities:
Additions to utility and non-utility plant	(293,361)	(233,928)
Proceeds from sales of available-for-sale securities	82,222	179,336
Purchases of available-for-sale securities	(81,644)	(181,423)
Return of principal on PVNGS lessor notes	20,758	23,357
Purchase of Rio Bravo	(36,235)	0
Other, net	(3,433)	1,232
Net cash flows from investing activities	(311,693)	(211,426)
Cash Flows From Financing Activities:
Short-term borrowings (repayments), net	(49,200)	(46,700)
Long-term borrowings	255,000	75,000
Repayment of long-term debt	(125,000)	(26,037)
Cash paid in debt exchange	0	(13,048)
Proceeds from stock option exercise	5,495	3,500
Awards of common stock	(15,573)	(12,429)
Dividends paid	(44,600)	(38,233)
Valencia’s transactions with its owner	(12,749)	(13,477)
Other, net	(2,030)	(3,706)
Net cash flows from financing activities	11,343	(75,130)
Change in Cash and Cash Equivalents	25,891	24,454
Cash and Cash Equivalents at Beginning of Period	2,533	8,985
Cash and Cash Equivalents at End of Period	28,424	33,439
Supplemental Cash Flow Disclosures:
Interest paid, net of amounts capitalized	60,075	63,985
Income taxes paid (refunded), net	(2,529)	(95,472)
Supplemental schedule of noncash investing activities:
Changes in accrued plant additions	(6,674)	2,535
Premium on long-term debt incurred in connection with debt exchange	0	36,297
Pnm Electric [Member]
Cash Flows From Operating Activities:
Net Earnings	84,512	96,420
Net earnings	73,372	85,516
Adjustments to reconcile net earnings to net cash flows from operating activities:
Depreciation and amortization	108,069	104,161
Deferred income tax expense	45,313	49,870
Net unrealized (gains) on commodity derivatives	(67)	(5,858)
Realized (gains) on available-for-sale securities	(8,234)	(6,935)
Regulatory disallowances	0	1,735
Other, net	(355)	(1,342)
Changes in certain assets and liabilities:
Accounts receivable and unbilled revenues	(16,782)	(14,123)
Materials, supplies, and fuel stock	5,697	(744)
Other current assets	(20,806)	(5,187)
Other assets	29,796	21,977
Accounts payable	10,100	(4,953)
Accrued interest and taxes	19,984	66,090
Other current liabilities	(21,586)	(43,935)
Other liabilities	2,841	(67,062)
Net cash flows from operating activities	238,482	190,114
Cash Flows From Investing Activities:
Additions to utility and non-utility plant	(199,771)	(164,669)
Proceeds from sales of available-for-sale securities	82,222	179,336
Purchases of available-for-sale securities	(81,644)	(181,423)
Return of principal on PVNGS lessor notes	20,758	23,357
Purchase of Rio Bravo	(36,235)	0
Other, net	(3,404)	1,234
Net cash flows from investing activities	(218,074)	(142,165)
Cash Flows From Financing Activities:
Short-term borrowings (repayments), net	(49,200)	(21,100)
Short-term borrowings (repayments), affiliate, net	(26,000)	0
Long-term borrowings	175,000	75,000
Repayment of long-term debt	(75,000)	0
Dividends paid	(30,659)	(68,424)
Valencia’s transactions with its owner	(12,749)	(13,477)
Other, net	(1,196)	(1,727)
Net cash flows from financing activities	(19,804)	(29,728)
Change in Cash and Cash Equivalents	604	18,221
Cash and Cash Equivalents at Beginning of Period	21	3,958
Cash and Cash Equivalents at End of Period	625	22,179
Supplemental Cash Flow Disclosures:
Interest paid, net of amounts capitalized	41,606	42,145
Income taxes paid (refunded), net	(215)	(44,999)
Supplemental schedule of noncash investing activities:
Changes in accrued plant additions	(10,586)	8,912
Tnmp Electric [Member]
Cash Flows From Operating Activities:
Net Earnings	28,691	22,170
Net earnings	28,691	22,170
Adjustments to reconcile net earnings to net cash flows from operating activities:
Depreciation and amortization	39,577	40,946
Deferred income tax expense	4,256	3,901
Other, net	(169)	(13)
Changes in certain assets and liabilities:
Accounts receivable and unbilled revenues	(5,376)	(9,608)
Materials, supplies, and fuel stock	(203)	20
Other current assets	1,761	(2,420)
Other assets	(58)	36
Accounts payable	(1,302)	(291)
Accrued interest and taxes	19,054	14,669
Other current liabilities	(1,217)	(1,946)
Other liabilities	1,397	2,182
Net cash flows from operating activities	86,411	69,646
Cash Flows From Investing Activities:
Additions to utility and non-utility plant	(88,940)	(67,400)
Net cash flows from investing activities	(88,940)	(67,400)
Cash Flows From Financing Activities:
Short-term borrowings (repayments), net	0	12,000
Short-term borrowings (repayments), affiliate, net	(10,300)	4,800
Long-term borrowings	80,000	0
Repayment of long-term debt	(50,000)	0
Cash paid in debt exchange	0	(13,048)
Dividends paid	(16,336)	(3,726)
Other, net	(835)	(2,117)
Net cash flows from financing activities	2,529	(2,091)
Change in Cash and Cash Equivalents	0	155
Cash and Cash Equivalents at Beginning of Period	1	1
Cash and Cash Equivalents at End of Period	1	156
Supplemental Cash Flow Disclosures:
Interest paid, net of amounts capitalized	11,778	13,626
Income taxes paid (refunded), net	(299)	696
Supplemental schedule of noncash investing activities:
Changes in accrued plant additions	1,658	(1,443)
Premium on long-term debt incurred in connection with debt exchange	$ 0	$ 36,297