$TXNM
TXNM ENERGY INC Stock $txnm

$txnm Overview Financials Valuation SEC Filings Company Website

2021 Form 10-K Financial Statement

#000110842622000010 Filed on March 01, 2022

Income Statement

Concept	2021	2020 Q4	2020
Revenue	$1.780B	$359.3M	$1.523B
YoY Change	16.87%	4.4%	4.49%
Cost Of Revenue
YoY Change
Gross Profit	$648.9M		$606.7M
YoY Change	6.96%
Gross Profit Margin	36.46%		39.84%
Selling, General & Admin	$230.3M	$68.20M	$216.3M
YoY Change	6.47%	46.98%	14.32%
% of Gross Profit	35.49%		35.65%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$320.2M	$81.20M	$314.7M
YoY Change	1.76%	6.98%	4.52%
% of Gross Profit	49.34%		51.86%
Operating Expenses	$1.471B	$339.6M	$1.237B
YoY Change	18.92%	19.96%	6.4%
Operating Profit	$308.2M	$18.59M	$285.3M
YoY Change	8.02%	-69.3%	97.84%
Interest Expense	$96.88M	-$2.600M	$114.4M
YoY Change	-15.31%	-84.15%	-5.47%
% of Operating Profit	31.44%	-13.99%	40.1%
Other Income/Expense, Net	$18.56M	$1.700M	$18.73M
YoY Change	-0.92%	-270.0%	22.21%
Pretax Income	$244.4M	$17.60M	$208.0M
YoY Change	17.54%	-59.16%	211.08%
Income Tax	$32.58M	$5.900M	$20.64M
% Of Pretax Income	13.33%	33.52%	9.92%
Net Earnings	$211.8M	$8.778M	$187.3M
YoY Change	13.1%	-72.4%	103.31%
Net Earnings / Revenue	11.9%	2.44%	12.3%
Basic Earnings Per Share	$2.28	$0.11	$2.16
Diluted Earnings Per Share	$2.27	$0.10	$2.15
COMMON SHARES
Basic Shares Outstanding	86.07M shares	79.65M shares	80.16M shares
Diluted Shares Outstanding	86.11M shares		80.30M shares

Balance Sheet

Concept	2021	2020 Q4	2020
SHORT-TERM ASSETS
Cash & Short-Term Investments	$1.104M	$47.90M	$47.90M
YoY Change	-97.7%	1160.53%	1160.53%
Cash & Equivalents	$1.104M	$47.93M	$47.90M
Short-Term Investments
Other Short-Term Assets	$111.5M	$22.49M	$120.3M
YoY Change	-7.33%	-49.44%	10.06%
Inventory	$65.06M	$66.42M	$66.40M
Prepaid Expenses		$42.06M
Receivables	$123.3M	$113.4M	$113.4M
Other Receivables	$23.66M	$29.50M	$29.50M
Total Short-Term Assets	$324.6M	$377.5M	$377.5M
YoY Change	-14.01%	28.39%	28.4%
LONG-TERM ASSETS
Property, Plant & Equipment	$6.858B	$6.094B	$6.094B
YoY Change	12.53%	8.64%	8.64%
Goodwill		$278.3M
YoY Change		0.0%
Intangibles
YoY Change
Long-Term Investments	$552.5M	$90.66M	$531.1M
YoY Change	4.04%	39.13%	16.91%
Other Assets	$653.6M	$658.7M	$658.7M
YoY Change	-0.78%	-0.56%	-0.56%
Total Long-Term Assets	$8.342B	$7.562B	$7.562B
YoY Change	10.31%	7.96%	7.96%
TOTAL ASSETS
Total Short-Term Assets	$324.6M	$377.5M	$377.5M
Total Long-Term Assets	$8.342B	$7.562B	$7.562B
Total Assets	$8.667B	$7.940B	$7.940B
YoY Change	9.16%	8.78%	8.78%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$172.6M	$169.3M	$169.3M
YoY Change	1.95%	64.2%	64.21%
Accrued Expenses	$97.32M	$95.70M	$95.70M
YoY Change	1.7%	-9.63%	-9.63%
Deferred Revenue		$6.606M
YoY Change		-37.59%
Short-Term Debt	$62.70M	$32.00M	$32.00M
YoY Change	95.94%	-82.71%	-82.71%
Long-Term Debt Due	$185.2M	$575.5M	$577.5M
YoY Change	-67.94%	17.39%	17.4%
Total Short-Term Liabilities	$664.2M	$977.7M	$977.7M
YoY Change	-32.06%	1.05%	1.05%
LONG-TERM LIABILITIES
Long-Term Debt	$3.536B	$2.720B	$2.727B
YoY Change	29.66%	8.03%	8.01%
Other Long-Term Liabilities	$1.468B	$1.421B	$1.421B
YoY Change	3.29%	-0.46%	-0.46%
Total Long-Term Liabilities	$5.003B	$2.720B	$4.148B
YoY Change	20.63%	8.03%	4.95%
TOTAL LIABILITIES
Total Short-Term Liabilities	$664.2M	$977.7M	$977.7M
Total Long-Term Liabilities	$5.003B	$2.720B	$4.148B
Total Liabilities	$6.488B	$5.820B	$5.879B
YoY Change	10.36%	4.95%	4.82%
SHAREHOLDERS EQUITY
Retained Earnings		$698.7M
YoY Change		11.34%
Common Stock		$1.430B
YoY Change		24.28%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$2.179B	$2.049B	$2.061B
YoY Change
Total Liabilities & Shareholders Equity	$8.667B	$7.940B	$7.940B
YoY Change	9.16%	8.78%	8.78%

Cashflow Statement

Concept	2021	2020 Q4	2020
OPERATING ACTIVITIES
Net Income	$211.8M	$8.778M	$187.3M
YoY Change	13.1%	-72.4%	103.31%
Depreciation, Depletion And Amortization	$320.2M	$81.20M	$314.7M
YoY Change	1.76%	6.98%	4.52%
Cash From Operating Activities	$547.9M	$117.7M	$485.7M
YoY Change	12.8%	-22.51%	-3.47%
INVESTING ACTIVITIES
Capital Expenditures	-$935.0M	-$183.7M	-$679.0M
YoY Change	37.7%	7.18%	10.17%
Acquisitions
YoY Change
Other Investing Activities	$9.000K	-$22.80M	$14.93M
YoY Change	-99.94%	25.27%	40245.95%
Cash From Investing Activities	-$952.3M	-$206.4M	-$733.8M
YoY Change	29.77%	8.86%	8.89%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$10.13M		-$271.2M
YoY Change	-103.73%		-2834.66%
Debt Paid & Issued, Net	$1.411B		$977.8M
YoY Change	44.33%		140.08%
Cash From Financing Activities	$357.6M	105.7M	$292.2M
YoY Change	22.37%	393.93%	69.44%
NET CHANGE
Cash From Operating Activities	$547.9M	117.7M	$485.7M
Cash From Investing Activities	-$952.3M	-206.4M	-$733.8M
Cash From Financing Activities	$357.6M	105.7M	$292.2M
Net Change In Cash	-$46.82M	17.00M	$44.10M
YoY Change	-206.19%	-204.29%	2477.15%
FREE CASH FLOW
Cash From Operating Activities	$547.9M	$117.7M	$485.7M
Capital Expenditures	-$935.0M	-$183.7M	-$679.0M
Free Cash Flow	$1.483B	$301.4M	$1.165B
YoY Change	27.32%	-6.77%	4.04%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0001108426
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2020Q4	us-gaap	Finance Lease Liability Current Statement Of Financial Position Extensible List FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilitiesCurrent
CY2021Q4	us-gaap	Finance Lease Liability Current Statement Of Financial Position Extensible List FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilitiesCurrent
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent Statement Of Financial Position Extensible List FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#DeferredCreditsAndOtherLiabilitiesNoncurrent
CY2021Q4	us-gaap	Finance Lease Liability Noncurrent Statement Of Financial Position Extensible List FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#DeferredCreditsAndOtherLiabilitiesNoncurrent
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity Registrant Name EntityRegistrantName	PNM Resources, Inc.
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	NM
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	414 Silver Ave. SW
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Albuquerque
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	NM
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	87102
CY2021	dei	City Area Code CityAreaCode	505
CY2021	dei	Local Phone Number LocalPhoneNumber	241-2700
CY2021	dei	Entity File Number EntityFileNumber	001-32462
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	85-0468296
CY2021	dei	Security12b Title Security12bTitle	Common Stock, no par value
CY2021	dei	Trading Symbol TradingSymbol	PNM
CY2021	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2021	dei	Entity Small Business EntitySmallBusiness	false
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2021	dei	Entity Shell Company EntityShellCompany	false
CY2022Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	85834874	shares
CY2021Q2	dei	Entity Public Float EntityPublicFloat	4186166805	USD
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1569405000	USD
CY2021	dei	Auditor Firm AuditorFirmId	185
CY2021	dei	Auditor Name AuditorName	KPMG LLP
CY2021	dei	Auditor Location AuditorLocation	Albuquerque, New Mexico
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CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	229000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	442000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	-186000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	674000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	1298000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-547000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	9307000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	219094000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	207510000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	101438000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	15490000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	14013000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	14241000	USD
CY2021	pnm	Preferred Stock Dividend Requirements Of Subsidiary PreferredStockDividendRequirementsOfSubsidiary	528000	USD
CY2020	pnm	Preferred Stock Dividend Requirements Of Subsidiary PreferredStockDividendRequirementsOfSubsidiary	528000	USD
CY2019	pnm	Preferred Stock Dividend Requirements Of Subsidiary PreferredStockDividendRequirementsOfSubsidiary	528000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	203076000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	192969000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	86669000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	211847000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	187316000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	92131000	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	320210000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	314668000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	301068000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	30747000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	20405000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-25385000	USD
CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	16850000	USD
CY2020	us-gaap	Gain Loss On Investments GainLossOnInvestments	21599000	USD
CY2019	us-gaap	Gain Loss On Investments GainLossOnInvestments	29589000	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	9446000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	8141000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	6414000	USD
CY2021	pnm	Regulatory Disallowances And Restructuring Costs RegulatoryDisallowancesAndRestructuringCosts	1194000	USD
CY2020	pnm	Regulatory Disallowances And Restructuring Costs RegulatoryDisallowancesAndRestructuringCosts	1098000	USD
CY2019	pnm	Regulatory Disallowances And Restructuring Costs RegulatoryDisallowancesAndRestructuringCosts	151095000	USD
CY2021	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	13217000	USD
CY2020	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	11254000	USD
CY2019	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	9478000	USD
CY2021	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-5457000	USD
CY2020	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-3497000	USD
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-2395000	USD
CY2021	pnm	Increase Decrease In Accounts Receivable And Unbilled Revenues IncreaseDecreaseInAccountsReceivableAndUnbilledRevenues	25924000	USD
CY2020	pnm	Increase Decrease In Accounts Receivable And Unbilled Revenues IncreaseDecreaseInAccountsReceivableAndUnbilledRevenues	42035000	USD
CY2019	pnm	Increase Decrease In Accounts Receivable And Unbilled Revenues IncreaseDecreaseInAccountsReceivableAndUnbilledRevenues	-3796000	USD
CY2021	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-1356000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-11512000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	6095000	USD
CY2021	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-1838000	USD
CY2020	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	8135000	USD
CY2019	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-1872000	USD
CY2021	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-31135000	USD
CY2020	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-29923000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-42803000	USD
CY2021	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	10640000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	7403000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-272000	USD
CY2021	pnm	Increase Decrease In Accrued Interest And Taxes IncreaseDecreaseInAccruedInterestAndTaxes	2692000	USD
CY2020	pnm	Increase Decrease In Accrued Interest And Taxes IncreaseDecreaseInAccruedInterestAndTaxes	-9347000	USD
CY2019	pnm	Increase Decrease In Accrued Interest And Taxes IncreaseDecreaseInAccruedInterestAndTaxes	14691000	USD
CY2021	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	6894000	USD
CY2020	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	23740000	USD
CY2019	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-7212000	USD
CY2021	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-29592000	USD
CY2020	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-29633000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-35071000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	547873000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	485700000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	503163000	USD
CY2021	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	935016000	USD
CY2020	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	679028000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	616273000	USD
CY2021	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	459867000	USD
CY2020	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	590998000	USD
CY2019	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	494528000	USD
CY2021	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	477672000	USD
CY2020	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	607591000	USD
CY2019	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	513866000	USD
CY2021	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	0	USD
CY2020	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	23250000	USD
CY2019	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	38250000	USD
CY2021	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	572000	USD
CY2020	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	0	USD
CY2019	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	0	USD
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	9000	USD
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	14928000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	37000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-952258000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-733799000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-673898000	USD
CY2021	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	0	USD
CY2020	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	0	USD
CY2019	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	-150000000	USD
CY2021	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	30700000	USD
CY2020	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	-153100000	USD
CY2019	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	99200000	USD
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1816345000	USD
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1267845000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	745000000	USD
CY2021	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1411345000	USD
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	977845000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	407302000	USD
CY2021	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	283208000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	24000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	943000	USD
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	10130000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	11984000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	9918000	USD
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	112972000	USD
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	98502000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	92926000	USD
CY2021	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	19094000	USD
CY2020	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	18056000	USD
CY2019	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	15401000	USD
CY2021	pnm	Proceeds From Transmission Interconnection Arrangements ProceedsFromTransmissionInterconnectionArrangements	80558000	USD
CY2020	pnm	Proceeds From Transmission Interconnection Arrangements ProceedsFromTransmissionInterconnectionArrangements	11452000	USD
CY2019	pnm	Proceeds From Transmission Interconnection Arrangements ProceedsFromTransmissionInterconnectionArrangements	10015000	USD
CY2021	pnm	Repayment Of Transmission Interconnection Agreements RepaymentOfTransmissionInterconnectionAgreements	10195000	USD
CY2020	pnm	Repayment Of Transmission Interconnection Agreements RepaymentOfTransmissionInterconnectionAgreements	5905000	USD
CY2019	pnm	Repayment Of Transmission Interconnection Agreements RepaymentOfTransmissionInterconnectionAgreements	4325000	USD
CY2021	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-6306000	USD
CY2020	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-4943000	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-2840000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	357561000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	292194000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	172446000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-46824000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	44095000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	1711000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	47928000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3833000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2122000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1104000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	47928000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3833000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	91276000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	106575000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	115476000	USD
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1042000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	969000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-2929000	USD
CY2021	pnm	Increase Decreaseincapitalexpendituresincurredbutnotyetpaid IncreaseDecreaseincapitalexpendituresincurredbutnotyetpaid	7362000	USD
CY2020	pnm	Increase Decreaseincapitalexpendituresincurredbutnotyetpaid IncreaseDecreaseincapitalexpendituresincurredbutnotyetpaid	-58796000	USD
CY2019	pnm	Increase Decreaseincapitalexpendituresincurredbutnotyetpaid IncreaseDecreaseincapitalexpendituresincurredbutnotyetpaid	8781000	USD
CY2021	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	0	USD
CY2020	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	801000	USD
CY2019	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	0	USD
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1104000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	47928000	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	7265000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	8333000	USD
CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	123292000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	113410000	USD
CY2021Q4	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	57736000	USD
CY2020Q4	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	55504000	USD
CY2021Q4	us-gaap	Other Receivables OtherReceivables	18784000	USD
CY2020Q4	us-gaap	Other Receivables OtherReceivables	23797000	USD
CY2021Q4	us-gaap	Inventory Net InventoryNet	65061000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	66417000	USD
CY2021Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	14785000	USD
CY2020Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	202000	USD
CY2021Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	37325000	USD
CY2020Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	42064000	USD
CY2021Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	4878000	USD
CY2020Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	5672000	USD
CY2021Q4	us-gaap	Other Assets Current OtherAssetsCurrent	1635000	USD
CY2020Q4	us-gaap	Other Assets Current OtherAssetsCurrent	22485000	USD
CY2021Q4	us-gaap	Assets Current AssetsCurrent	324600000	USD
CY2020Q4	us-gaap	Assets Current AssetsCurrent	377479000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities Noncurrent AvailableForSaleSecuritiesDebtSecuritiesNoncurrent	463126000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities Noncurrent AvailableForSaleSecuritiesDebtSecuritiesNoncurrent	440115000	USD
CY2021Q4	us-gaap	Equity Method Investments EquityMethodInvestments	89158000	USD
CY2020Q4	us-gaap	Equity Method Investments EquityMethodInvestments	90655000	USD
CY2021Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	265000	USD
CY2020Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	284000	USD
CY2021Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	25439000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	24075000	USD
CY2021Q4	pnm	Total Other Property And Investments TotalOtherPropertyAndInvestments	577988000	USD
CY2020Q4	pnm	Total Other Property And Investments TotalOtherPropertyAndInvestments	555129000	USD
CY2021Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	9357849000	USD
CY2020Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	8480799000	USD
CY2021Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	2952743000	USD
CY2020Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	2835170000	USD
CY2021Q4	pnm	Public Utilities Property Plant And Equipment Net In Service PublicUtilitiesPropertyPlantAndEquipmentNetInService	6405106000	USD
CY2020Q4	pnm	Public Utilities Property Plant And Equipment Net In Service PublicUtilitiesPropertyPlantAndEquipmentNetInService	5645629000	USD
CY2021Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	248856000	USD
CY2020Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	218719000	USD
CY2021Q4	pnm	Accumulated Amortization Nuclear Fuel AccumulatedAmortizationNuclearFuel	41181000	USD
CY2020Q4	pnm	Accumulated Amortization Nuclear Fuel AccumulatedAmortizationNuclearFuel	41367000	USD
CY2021Q4	us-gaap	Nuclear Fuel Net Of Amortization NuclearFuelNetOfAmortization	98937000	USD
CY2020Q4	us-gaap	Nuclear Fuel Net Of Amortization NuclearFuelNetOfAmortization	100801000	USD
CY2021Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	6752899000	USD
CY2020Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	5965149000	USD
CY2021Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	514258000	USD
CY2020Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	557790000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	278297000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	278297000	USD
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	79511000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	105133000	USD
CY2021Q4	us-gaap	Other Deferred Costs Net OtherDeferredCostsNet	139332000	USD
CY2020Q4	us-gaap	Other Deferred Costs Net OtherDeferredCostsNet	100877000	USD
CY2021Q4	pnm	Total Deferred Charges And Other Assets TotalDeferredChargesAndOtherAssets	1011398000	USD
CY2020Q4	pnm	Total Deferred Charges And Other Assets TotalDeferredChargesAndOtherAssets	1042097000	USD
CY2021Q4	us-gaap	Assets Assets	8666885000	USD
CY2020Q4	us-gaap	Assets Assets	7939854000	USD
CY2021Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	62700000	USD
CY2020Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	32000000	USD
CY2021Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	179339000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	575518000	USD
CY2021Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	172595000	USD
CY2020Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	169317000	USD
CY2021Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	5095000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	6606000	USD
CY2021Q4	pnm	Accrued Interest And Taxes Payable AccruedInterestAndTaxesPayable	70105000	USD
CY2020Q4	pnm	Accrued Interest And Taxes Payable AccruedInterestAndTaxesPayable	68206000	USD
CY2021Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	132000	USD
CY2020Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	28243000	USD
CY2021Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	8316000	USD
CY2020Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	7471000	USD
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	27218000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	27460000	USD
CY2021Q4	pnm	Transmission Interconnection Arrangement Liabilities TransmissionInterconnectionArrangementLiabilities	39564000	USD
CY2020Q4	pnm	Transmission Interconnection Arrangement Liabilities TransmissionInterconnectionArrangementLiabilities	6883000	USD
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CY2020Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	55958000	USD
CY2021Q4	us-gaap	Liabilities Current LiabilitiesCurrent	664213000	USD
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	977662000	USD
CY2021Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3519580000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2719632000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	764850000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	694512000	USD
CY2021Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	841393000	USD
CY2020Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	850228000	USD
CY2021Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	234146000	USD
CY2020Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	183421000	USD
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CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	55993000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	81065000	USD
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CY2020Q4	us-gaap	Deferred Credits And Other Liabilities Noncurrent DeferredCreditsAndOtherLiabilitiesNoncurrent	255230000	USD
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CY2020Q4	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	2122557000	USD
CY2021Q4	us-gaap	Liabilities Liabilities	6432427000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	5819851000	USD
CY2021Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
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CY2021Q4	pnm	Cumulative Preferred Stock Of Subsidiary Without Mandatory Redemption Requirements Shares Authorized CumulativePreferredStockOfSubsidiaryWithoutMandatoryRedemptionRequirementsSharesAuthorized	10000000	shares
CY2020Q4	pnm	Cumulative Preferred Stock Of Subsidiary Without Mandatory Redemption Requirements Shares Authorized CumulativePreferredStockOfSubsidiaryWithoutMandatoryRedemptionRequirementsSharesAuthorized	10000000	shares
CY2020Q4	pnm	Cumulative Preferred Stock Of Subsidiary Without Mandatory Redemption Requirements Shares Issued CumulativePreferredStockOfSubsidiaryWithoutMandatoryRedemptionRequirementsSharesIssued	115293	shares
CY2020Q4	pnm	Cumulative Preferred Stock Of Subsidiary Without Mandatory Redemption Requirements Shares Outstanding CumulativePreferredStockOfSubsidiaryWithoutMandatoryRedemptionRequirementsSharesOutstanding	115293	shares
CY2021Q4	pnm	Cumulative Preferred Stock Of Subsidiary Without Mandatory Redemption Requirements Shares Issued CumulativePreferredStockOfSubsidiaryWithoutMandatoryRedemptionRequirementsSharesIssued	115293	shares
CY2021Q4	pnm	Cumulative Preferred Stock Of Subsidiary Without Mandatory Redemption Requirements Shares Outstanding CumulativePreferredStockOfSubsidiaryWithoutMandatoryRedemptionRequirementsSharesOutstanding	115293	shares
CY2021Q4	pnm	Cumulative Preferred Stock Of Subsidiary Without Mandatory Redemption Requirements CumulativePreferredStockOfSubsidiaryWithoutMandatoryRedemptionRequirements	11529000	USD
CY2020Q4	pnm	Cumulative Preferred Stock Of Subsidiary Without Mandatory Redemption Requirements CumulativePreferredStockOfSubsidiaryWithoutMandatoryRedemptionRequirements	11529000	USD
CY2020Q4	us-gaap	Common Stock No Par Value CommonStockNoParValue	0
CY2021Q4	us-gaap	Common Stock No Par Value CommonStockNoParValue	0
CY2021Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	120000000	shares
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	120000000	shares
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	85834874	shares
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	85834874	shares
CY2021Q4	us-gaap	Common Stock Value CommonStockValue	1429257000	USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	1429941000	USD
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-71936000	USD
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CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	698707000	USD
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CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2108474000	USD
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CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	7939854000	USD
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CY2019	us-gaap	Profit Loss ProfitLoss	92131000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	9307000	USD
CY2019	us-gaap	Dividends Preferred Stock DividendsPreferredStock	528000	USD
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	93792000	USD
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	943000	USD
CY2019	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	9918000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	6414000	USD
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CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1741750000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	187316000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	20194000	USD
CY2020	us-gaap	Dividends Preferred Stock DividendsPreferredStock	528000	USD
CY2020	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	101591000	USD
CY2020	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	24000	USD
CY2020	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	11984000	USD
CY2020	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	283208000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	8141000	USD
CY2020	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	18056000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2108474000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	211847000	USD
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CY2021	us-gaap	Dividends Preferred Stock DividendsPreferredStock	528000	USD
CY2021	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	84333000	USD
CY2021	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	10130000	USD
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CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2222929000	USD
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CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	32582000	USD
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CY2021	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	15490000	USD
CY2021	us-gaap	Dividends Preferred Stock DividendsPreferredStock	528000	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	195829000	USD
CY2021Q4	us-gaap	Assets Assets	8666885000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	278297000	USD
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CY2020	us-gaap	Cost Of Goods And Services Sold Depreciation And Amortization CostOfGoodsAndServicesSoldDepreciationAndAmortization	275612000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	285281000	USD
CY2020	us-gaap	Investment Income Interest InvestmentIncomeInterest	14223000	USD
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CY2020	us-gaap	Interest Expense InterestExpense	114392000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	207952000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	20636000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	187316000	USD
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	14013000	USD
CY2020	us-gaap	Dividends Preferred Stock DividendsPreferredStock	528000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	172775000	USD
CY2020Q4	us-gaap	Assets Assets	7939854000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	278297000	USD
CY2019	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	632783000	USD
CY2019	us-gaap	Cost Of Goods And Services Sold Depreciation And Amortization CostOfGoodsAndServicesSoldDepreciationAndAmortization	267808000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	144200000	USD
CY2019	us-gaap	Investment Income Interest InvestmentIncomeInterest	14022000	USD
CY2019	pnm	Other Income Deductions Excluding Interest OtherIncomeDeductionsExcludingInterest	29643000	USD
CY2019	us-gaap	Interest Expense InterestExpense	121016000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	66849000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-25282000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	92131000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	14241000	USD
CY2019	us-gaap	Dividends Preferred Stock DividendsPreferredStock	528000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	77362000	USD
CY2019Q4	us-gaap	Assets Assets	7298774000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	278297000	USD
CY2021	us-gaap	Allowance For Doubtful Accounts Receivable Period Increase Decrease AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease	-1100000	USD
CY2020	us-gaap	Allowance For Doubtful Accounts Receivable Period Increase Decrease AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease	6800000	USD
CY2021	pnm	Other Receivables Allowance For Credit Loss Period Increase Decrease OtherReceivablesAllowanceForCreditLossPeriodIncreaseDecrease	1000000	USD
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CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1569405000	USD
CY2021	us-gaap	Revenue Not From Contract With Customer RevenueNotFromContractWithCustomer	-3764000	USD
CY2021	us-gaap	Revenue Not From Contract With Customer Other RevenueNotFromContractWithCustomerOther	214232000	USD
CY2021	us-gaap	Revenues Revenues	1779873000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1469799000	USD
CY2020	us-gaap	Revenue Not From Contract With Customer RevenueNotFromContractWithCustomer	-11994000	USD
CY2020	us-gaap	Revenue Not From Contract With Customer Other RevenueNotFromContractWithCustomerOther	65207000	USD
CY2020	us-gaap	Revenues Revenues	1523012000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1377208000	USD
CY2019	us-gaap	Revenue Not From Contract With Customer RevenueNotFromContractWithCustomer	-542000	USD
CY2019	us-gaap	Revenue Not From Contract With Customer Other RevenueNotFromContractWithCustomerOther	80937000	USD
CY2019	us-gaap	Revenues Revenues	1457603000	USD
CY2021Q4	us-gaap	Commodity Contract Asset Current CommodityContractAssetCurrent	600000	USD
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CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	80157000	shares
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CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	40000	shares
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CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	79990000	shares
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.28
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CY2021	us-gaap	Dividends Dividends	404700000	USD
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CY2021Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	62700000	USD
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CY2021Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	3699043000	USD
CY2020Q4	pnm	Unamortized Cost Of Prepaid Right Of Way Agreements UnamortizedCostOfPrepaidRightOfWayAgreements	55800000	USD
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CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	79511000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	105133000	USD
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	27218000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	27460000	USD
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	55993000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	81065000	USD
CY2021Q4	pnm	Finance Lease Right Of Use Asset Gross FinanceLeaseRightOfUseAssetGross	31695000	USD
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CY2021Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	22035000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	20672000	USD
CY2021Q4	pnm	Finance Lease Liability Current Other FinanceLeaseLiabilityCurrentOther	5813000	USD
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CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y14D
CY2021Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P4Y2M12D
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P4Y9M14D
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0399
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0394
CY2021Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0265
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0280
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	29270000	USD
CY2021	pnm	Operating Lease Capitalized Costs OperatingLeaseCapitalizedCosts	2951000	USD
CY2021	us-gaap	Operating Lease Expense OperatingLeaseExpense	26319000	USD
CY2021	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	5277000	USD
CY2021	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	574000	USD
CY2021	pnm	Finance Lease Capitalized Costs FinanceLeaseCapitalizedCosts	4404000	USD
CY2021	pnm	Finance Lease Cost FinanceLeaseCost	1447000	USD
CY2021	us-gaap	Variable Lease Cost VariableLeaseCost	380000	USD
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	3035000	USD
CY2021	us-gaap	Lease Cost LeaseCost	31181000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	30418000	USD
CY2020	pnm	Operating Lease Capitalized Costs OperatingLeaseCapitalizedCosts	3395000	USD
CY2020	us-gaap	Operating Lease Expense OperatingLeaseExpense	27023000	USD
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	3412000	USD
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	511000	USD
CY2020	pnm	Finance Lease Capitalized Costs FinanceLeaseCapitalizedCosts	2810000	USD
CY2020	pnm	Finance Lease Cost FinanceLeaseCost	1113000	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	221000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	295000	USD
CY2020	us-gaap	Lease Cost LeaseCost	28652000	USD
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	26129000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	27121000	USD
CY2021	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	128000	USD
CY2020	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	136000	USD
CY2021	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	1296000	USD
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	936000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	317000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	6958000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	15614000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	6307000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	28365000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	5912000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	19395000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	4719000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	8987000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	2985000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	7509000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	1857000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	7367000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	1336000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	20823000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	23116000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	92446000	USD
CY2021Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	1228000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	9235000	USD
CY2021Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	21888000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	83211000	USD
CY2021Q4	pnm	Lessee Operating Lease Unguaranteed Residual Value LesseeOperatingLeaseUnguaranteedResidualValue	25800000	USD
CY2021Q4	pnm	Contract With Customer Liability Net ContractWithCustomerLiabilityNet	0	USD
CY2020Q4	pnm	Contract With Customer Liability Net ContractWithCustomerLiabilityNet	0	USD
CY2021	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	8738000	USD
CY2020	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	5861000	USD
CY2019	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	5698000	USD
CY2021	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-442000	USD
CY2020	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	17707000	USD
CY2019	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	18319000	USD
CY2021	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	8296000	USD
CY2020	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	23568000	USD
CY2019	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	24017000	USD
CY2021	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	8554000	USD
CY2020	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	-1969000	USD
CY2019	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	5572000	USD
CY2021	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	16850000	USD
CY2020	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	21599000	USD
CY2019	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	29589000	USD
CY2021	pnm	Increase Decrease In Other Than Temporary Losses Investments Portion Recognizedin Earnings Net Availableforsale Securities IncreaseDecreaseInOtherThanTemporaryLossesInvestmentsPortionRecognizedinEarningsNetAvailableforsaleSecurities	700000	USD
CY2020	pnm	Increase Decrease In Other Than Temporary Losses Investments Portion Recognizedin Earnings Net Availableforsale Securities IncreaseDecreaseInOtherThanTemporaryLossesInvestmentsPortionRecognizedinEarningsNetAvailableforsaleSecurities	-3200000	USD
CY2019	pnm	Increase Decrease In Other Than Temporary Losses Investments Portion Recognizedin Earnings Net Availableforsale Securities IncreaseDecreaseInOtherThanTemporaryLossesInvestmentsPortionRecognizedinEarningsNetAvailableforsaleSecurities	3000000	USD
CY2021	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.040
CY2021	pnm	Defined Benefit Plans Gains And Losses That Lie Outside Corridor Amortized In Years DefinedBenefitPlansGainsAndLossesThatLieOutsideCorridorAmortizedInYears	P5Y
CY2021Q4	pnm	Defined Benefit Plan Total Expected Employer Disbursementsfor Next Fiscal Year DefinedBenefitPlanTotalExpectedEmployerDisbursementsforNextFiscalYear	3200000	USD
CY2021Q4	pnm	Defined Benefit Plan Plan Assets Disbursements By Employer In Year Two Through Year Five DefinedBenefitPlanPlanAssetsDisbursementsByEmployerInYearTwoThroughYearFive	11900000	USD
CY2021	us-gaap	Defined Contribution Plan Maximum Annual Contributions Per Employee Percent DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent	0.75
CY2021	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.06
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	9400000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	8100000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	6400000	USD
CY2021Q4	pnm	Asset Retirement Obligation Liabilities Relatedto Nuclear Decommissioning AssetRetirementObligationLiabilitiesRelatedtoNuclearDecommissioning	0.62
CY2018Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	158674000	USD
CY2019	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	0	USD
CY2019	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	987000	USD
CY2019	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	12635000	USD
CY2019	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	11640000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	181962000	USD
CY2020	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	0	USD
CY2020	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	1444000	USD
CY2020	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	11310000	USD
CY2020	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	-8407000	USD
CY2020Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	183421000	USD
CY2021	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	1781000	USD
CY2021	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	142000	USD
CY2021	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	9308000	USD
CY2021	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	39778000	USD
CY2021Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	234146000	USD
CY2021	pnm	Number Of Options For Meeting Bta Standards NumberOfOptionsForMeetingBTAStandards	7	option
CY2018Q1	pnm	Public Utilities Percentof Nonfuel Revenue Requirement Change Implemented PublicUtilitiesPercentofNonfuelRevenueRequirementChangeImplemented	0.50
CY2021Q2	pnm	Public Utilities Regulatory Time Frame For Proposed Pp As And Battery Storage Agreements PublicUtilitiesRegulatoryTimeFrameForProposedPPAsAndBatteryStorageAgreements	P6M
CY2021	us-gaap	Deferred Federal State And Local Tax Expense Benefit DeferredFederalStateAndLocalTaxExpenseBenefit	24500000	USD
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	60000	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1835000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	231000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	43000	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	20679000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	17574000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-20372000	USD
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	11315000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	3721000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-4491000	USD
CY2021	us-gaap	Other Income Tax Expense Benefit Continuing Operations OtherIncomeTaxExpenseBenefitContinuingOperations	-1247000	USD
CY2020	us-gaap	Other Income Tax Expense Benefit Continuing Operations OtherIncomeTaxExpenseBenefitContinuingOperations	-890000	USD
CY2019	us-gaap	Other Income Tax Expense Benefit Continuing Operations OtherIncomeTaxExpenseBenefitContinuingOperations	-522000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	32582000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	20636000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-25282000	USD
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	51330000	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	43670000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	14038000	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	1247000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	890000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	522000	USD
CY2021	pnm	Effective Income Tax Rate Reconciliation Deductible Expense Amortization Of Excess Deferred Income Tax EffectiveIncomeTaxRateReconciliationDeductibleExpenseAmortizationOfExcessDeferredIncomeTax	24484000	USD
CY2020	pnm	Effective Income Tax Rate Reconciliation Deductible Expense Amortization Of Excess Deferred Income Tax EffectiveIncomeTaxRateReconciliationDeductibleExpenseAmortizationOfExcessDeferredIncomeTax	30723000	USD
CY2019	pnm	Effective Income Tax Rate Reconciliation Deductible Expense Amortization Of Excess Deferred Income Tax EffectiveIncomeTaxRateReconciliationDeductibleExpenseAmortizationOfExcessDeferredIncomeTax	37799000	USD
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense Depreciation And Amortization IncomeTaxReconciliationNondeductibleExpenseDepreciationAndAmortization	798000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Depreciation And Amortization IncomeTaxReconciliationNondeductibleExpenseDepreciationAndAmortization	1368000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Depreciation And Amortization IncomeTaxReconciliationNondeductibleExpenseDepreciationAndAmortization	1136000	USD
CY2021	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	3253000	USD
CY2020	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	2943000	USD
CY2019	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	2991000	USD
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	9660000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	6961000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	298000	USD
CY2021	pnm	Effective Income Tax Rate Reconciliation Allowanceforequityfundsusedduringconstruction EffectiveIncomeTaxRateReconciliationAllowanceforequityfundsusedduringconstruction	-2776000	USD
CY2020	pnm	Effective Income Tax Rate Reconciliation Allowanceforequityfundsusedduringconstruction EffectiveIncomeTaxRateReconciliationAllowanceforequityfundsusedduringconstruction	-2363000	USD
CY2019	pnm	Effective Income Tax Rate Reconciliation Allowanceforequityfundsusedduringconstruction EffectiveIncomeTaxRateReconciliationAllowanceforequityfundsusedduringconstruction	-1990000	USD
CY2021	pnm	Effective Income Tax Rate Reconciliation Recoveryof Impairmentof Net Operating Loss Carryforward Amount EffectiveIncomeTaxRateReconciliationRecoveryofImpairmentofNetOperatingLossCarryforwardAmount	0	USD
CY2020	pnm	Effective Income Tax Rate Reconciliation Recoveryof Impairmentof Net Operating Loss Carryforward Amount EffectiveIncomeTaxRateReconciliationRecoveryofImpairmentofNetOperatingLossCarryforwardAmount	-1367000	USD
CY2019	pnm	Effective Income Tax Rate Reconciliation Recoveryof Impairmentof Net Operating Loss Carryforward Amount EffectiveIncomeTaxRateReconciliationRecoveryofImpairmentofNetOperatingLossCarryforwardAmount	-1367000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	-788000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	-392000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	-795000	USD
CY2021	pnm	Effective Income Tax Rate Reconciliation Non Deductible Compensation Amount EffectiveIncomeTaxRateReconciliationNonDeductibleCompensationAmount	899000	USD
CY2020	pnm	Effective Income Tax Rate Reconciliation Non Deductible Compensation Amount EffectiveIncomeTaxRateReconciliationNonDeductibleCompensationAmount	2630000	USD
CY2019	pnm	Effective Income Tax Rate Reconciliation Non Deductible Compensation Amount EffectiveIncomeTaxRateReconciliationNonDeductibleCompensationAmount	1156000	USD
CY2021	pnm	Effective Income Tax Rate Reconciliation Transaction Costs EffectiveIncomeTaxRateReconciliationTransactionCosts	848000	USD
CY2020	pnm	Effective Income Tax Rate Reconciliation Transaction Costs EffectiveIncomeTaxRateReconciliationTransactionCosts	0	USD
CY2019	pnm	Effective Income Tax Rate Reconciliation Transaction Costs EffectiveIncomeTaxRateReconciliationTransactionCosts	0	USD
CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	1595000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	1951000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	820000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	32582000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	20636000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-25282000	USD
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.1333
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.0992
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.3782
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	32441000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	41419000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Regulatory Assets And Liabilities DeferredTaxAssetsRegulatoryAssetsAndLiabilities	120651000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Regulatory Assets And Liabilities DeferredTaxAssetsRegulatoryAssetsAndLiabilities	148961000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	122436000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	121354000	USD
CY2021Q4	pnm	Deferred Tax Assets Regulatory Disallowance DeferredTaxAssetsRegulatoryDisallowance	38835000	USD
CY2020Q4	pnm	Deferred Tax Assets Regulatory Disallowance DeferredTaxAssetsRegulatoryDisallowance	38531000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	34812000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	42885000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	349175000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	393150000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	787295000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	738342000	USD
CY2021Q4	pnm	Deferred Tax Liabilities Investment Tax Credit DeferredTaxLiabilitiesInvestmentTaxCredit	97409000	USD
CY2020Q4	pnm	Deferred Tax Liabilities Investment Tax Credit DeferredTaxLiabilitiesInvestmentTaxCredit	98669000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets And Liabilities DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities	78211000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets And Liabilities DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities	61330000	USD
CY2021Q4	pnm	Deferred Tax Liabilities Compensationand Benefits Pensions DeferredTaxLiabilitiesCompensationandBenefitsPensions	40828000	USD
CY2020Q4	pnm	Deferred Tax Liabilities Compensationand Benefits Pensions DeferredTaxLiabilitiesCompensationandBenefitsPensions	37099000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets DeferredTaxLiabilitiesRegulatoryAssets	25643000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets DeferredTaxLiabilitiesRegulatoryAssets	27237000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	84639000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	124985000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	1114025000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	1087662000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	764850000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	694512000	USD
CY2021	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-70338000	USD
CY2021	pnm	Change In Tax Effects Of Income Tax Related Regulatory Assets And Liabilities ChangeInTaxEffectsOfIncomeTaxRelatedRegulatoryAssetsAndLiabilities	12424000	USD
CY2021	pnm	Amortization Of Excess Deferred Income Tax AmortizationOfExcessDeferredIncomeTax	24484000	USD
CY2021	pnm	Tax Effect Of Mark To Market Adjustments TaxEffectOfMarkToMarketAdjustments	2729000	USD
CY2021	pnm	Tax Effect Of Excess Pension Liability TaxEffectOfExcessPensionLiability	-5196000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	-562000	USD
CY2021	pnm	Adjustmentforunrecognizedtaxbenefits Adjustmentforunrecognizedtaxbenefits	562000	USD
CY2021	us-gaap	Deferred Other Tax Expense Benefit DeferredOtherTaxExpenseBenefit	-216000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	30747000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	0	USD
CY2020	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	0	USD
CY2021	pnm	State Tax Credit Carryforward Impairment StateTaxCreditCarryforwardImpairment	1029000	USD
CY2021	pnm	Compensation Expense Impairment CompensationExpenseImpairment	119000	USD
CY2020	pnm	State Tax Credit Carryforward Impairment StateTaxCreditCarryforwardImpairment	-425000	USD
CY2020	pnm	Compensation Expense Impairment CompensationExpenseImpairment	96000	USD
CY2019	pnm	State Tax Credit Carryforward Impairment StateTaxCreditCarryforwardImpairment	425000	USD
CY2019	pnm	Compensation Expense Impairment CompensationExpenseImpairment	-99000	USD
CY2021Q4	pnm	Reservebalance Statetaxcreditcarryforward ReservebalanceStatetaxcreditcarryforward	1029000	USD
CY2021	pnm	Reverse Balance Compensation Expense ReverseBalanceCompensationExpense	526000	USD
CY2020	pnm	Reverse Balance Compensation Expense ReverseBalanceCompensationExpense	407000	USD
CY2021Q4	us-gaap	Equity Method Investment Ownership Percentage EquityMethodInvestmentOwnershipPercentage	0.50

Files In Submission

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$TXNM
TXNM ENERGY INC Stock $txnm

2021 Form 10-K Financial Statement

#000110842622000010 Filed on March 01, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TXNM TXNM ENERGY INC Stock $txnm

2021 Form 10-K Financial Statement

#000110842622000010 Filed on March 01, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TXNM
TXNM ENERGY INC Stock $txnm