Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash Flows From Operating Activities:
Net Earnings	$ 152,821	$ 146,004
Adjustments to reconcile net earnings to net cash flows from operating activities:
Depreciation and amortization	207,406	200,286
Deferred income tax expense	18,706	75,224
Net unrealized (gains) losses on commodity derivatives	(84)	968
(Gains) on investment securities	(1,081)	(17,730)
Stock based compensation expense	4,551	5,322
Regulatory disallowances and restructuring costs	149	0
Allowance for equity funds used during construction	(7,098)	(6,217)
Other, net	2,715	1,409
Changes in certain assets and liabilities:
Accounts receivable and unbilled revenues	(20,447)	(21,077)
Materials and supplies	(8,731)	(203)
Other current assets	(13,657)	21,761
Other assets	2,608	(5,981)
Accounts payable	(32,638)	3,729
Accrued interest and taxes	17,113	20,722
Other current liabilities	4,220	(1,588)
Other liabilities	(9,656)	(6,292)
Net cash flows from operating activities	316,897	416,337
Cash Flows From Investing Activities:
Additions to utility and non-utility plant	(365,484)	(353,423)
Proceeds from sales of investment securities	911,899	456,577
Purchases of investment securities	(920,217)	(461,126)
Principal repayments on Westmoreland Loan	56,640	28,770
Investments in NMRD	(9,000)	0
Other, net	(365)	160
Net cash flows from investing activities	(326,527)	(329,042)
Cash Flows From Financing Activities:
Revolving credit facilities borrowings (repayments), net	(42,800)	(20,600)
Long-term borrowings	829,652	317,000
Repayment of long-term debt	(650,162)	(263,323)
Proceeds from stock option exercise	937	1,739
Awards of common stock	(12,505)	(13,816)
Dividends paid	(63,721)	(58,344)
Valencia’s transactions with its owner	(12,677)	(12,963)
Amounts received under transmission interconnection arrangements	0	11,879
Refunds paid under transmission interconnection arrangements	(2,246)	(9,368)
Debt issuance costs and other, net	(5,858)	(1,872)
Net cash flows from financing activities	40,620	(49,668)
Change in Cash, Restricted Cash, and Equivalents	30,990	37,627
Cash, Restricted Cash, and Equivalents at End of Period	34,964	43,149
Restricted Cash Included in Other Current Assets on Condensed Consolidated Balance Sheets:
At beginning of period	0	1,000
At end of period	0	0
Supplemental Cash Flow Disclosures:
Interest paid, net of amounts capitalized	81,203	75,356
Income taxes paid (refunded), net	842	625
Supplemental schedule of noncash investing activities:
(Increase) decrease in accrued plant additions	16,177	(4,499)
PNM
Cash Flows From Operating Activities:
Net Earnings	123,724	115,869
Net earnings	112,018	104,417
Adjustments to reconcile net earnings to net cash flows from operating activities:
Depreciation and amortization	137,224	134,541
Deferred income tax expense	11,894	59,866
Net unrealized (gains) losses on commodity derivatives	(84)	968
(Gains) on investment securities	(1,081)	(17,730)
Regulatory disallowances and restructuring costs	149	0
Allowance for equity funds used during construction	(5,473)	(5,908)
Other, net	2,495	1,705
Changes in certain assets and liabilities:
Accounts receivable and unbilled revenues	(14,164)	(13,881)
Materials and supplies	(7,308)	1,385
Other current assets	(15,493)	23,488
Other assets	11,829	6,925
Accounts payable	(23,990)	123
Accrued interest and taxes	13,560	16,221
Other current liabilities	(14,838)	(17,988)
Other liabilities	(12,228)	(8,792)
Net cash flows from operating activities	206,216	296,792
Cash Flows From Investing Activities:
Additions to utility and non-utility plant	(177,550)	(206,499)
Proceeds from sales of investment securities	911,899	456,577
Purchases of investment securities	(920,217)	(461,126)
Other, net	141	150
Net cash flows from investing activities	(185,727)	(210,898)
Cash Flows From Financing Activities:
Revolving credit facilities borrowings (repayments), net	(39,800)	(61,000)
Long-term borrowings	450,000	257,000
Repayment of long-term debt	(450,025)	(232,000)
Dividends paid	(396)	(396)
Valencia’s transactions with its owner	(12,677)	(12,963)
Amounts received under transmission interconnection arrangements	68,200	11,879
Refunds paid under transmission interconnection arrangements	(2,246)	(9,368)
Debt issuance costs and other, net	(3,167)	(1,000)
Net cash flows from financing activities	9,889	(47,848)
Change in Cash, Restricted Cash, and Equivalents	30,378	38,046
Cash, Restricted Cash, and Equivalents at End of Period	31,486	39,370
Restricted Cash Included in Other Current Assets on Condensed Consolidated Balance Sheets:
At beginning of period	0	1,000
At end of period	0	0
Supplemental Cash Flow Disclosures:
Interest paid, net of amounts capitalized	50,160	48,627
Income taxes paid (refunded), net	0	0
Supplemental schedule of noncash investing activities:
(Increase) decrease in accrued plant additions	(27)	(9,399)
Texas-New Mexico Power Company
Cash Flows From Operating Activities:
Net earnings	40,879	34,535
Adjustments to reconcile net earnings to net cash flows from operating activities:
Depreciation and amortization	51,076	48,754
Deferred income tax expense	(3,259)	8,578
Allowance for equity funds used during construction	(1,624)	(309)
Other, net	184	(296)
Changes in certain assets and liabilities:
Accounts receivable and unbilled revenues	(6,283)	(7,196)
Materials and supplies	(1,423)	(1,588)
Other current assets	759	(1,674)
Other assets	(9,169)	(13,799)
Accounts payable	(4,277)	669
Accrued interest and taxes	18,389	13,550
Other current liabilities	6,092	945
Other liabilities	2,613	1,633
Net cash flows from operating activities	93,957	83,802
Cash Flows From Investing Activities:
Additions to utility and non-utility plant	(170,785)	(106,914)
Net cash flows from investing activities	(170,785)	(106,914)
Cash Flows From Financing Activities:
Revolving credit facilities borrowings (repayments), net	17,500	0
Short-term borrowings (repayments) - affiliate, net	4,100	(4,600)
Long-term borrowings	80,000	60,000
Dividends paid	(25,804)	(29,663)
Debt issuance costs and other, net	(668)	(874)
Net cash flows from financing activities	75,128	24,863
Cash, Restricted Cash, and Equivalents at End of Period	0
Change in Cash and Cash Equivalents	(1,700)	1,751
Cash and Cash Equivalents at Beginning of Period	1,700	671
Cash and Cash Equivalents at End of Period	0	2,422
Supplemental Cash Flow Disclosures:
Interest paid, net of amounts capitalized	16,338	16,721
Income taxes paid (refunded), net	842	750
Supplemental schedule of noncash investing activities:
(Increase) decrease in accrued plant additions	$ 12,822	$ (251)