$NWE
NorthWestern Energy Group, Inc. Stock $nwe

$nwe Overview Financials Valuation SEC Filings Company Website

2024 Q2 Form 10-Q Financial Statement

#000199300424000035 Filed on April 26, 2024

Income Statement

Concept	2024 Q2	2024 Q1	2023 Q1
Revenue	$319.9M	$475.3M	$454.5M
YoY Change	10.13%	4.59%	15.21%
Cost Of Revenue	$76.48M	$174.7M	$165.5M
YoY Change	13.14%	5.57%	22.5%
Gross Profit	$243.4M	$300.6M	$289.0M
YoY Change	9.22%	4.02%	11.41%
Gross Profit Margin	76.09%	63.24%	63.59%
Selling, General & Admin	$31.28M	$40.45M	$34.70M
YoY Change	4.27%	16.56%	9.81%
% of Gross Profit	12.85%	13.45%	12.01%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$56.93M	$56.74M	$53.20M
YoY Change	8.65%	6.66%	8.79%
% of Gross Profit	23.39%	18.88%	18.41%
Operating Expenses	$181.8M	$198.5M	$193.0M
YoY Change	2.56%	2.87%	7.1%
Operating Profit	$61.61M	$102.1M	$96.00M
YoY Change	35.11%	6.33%	21.21%
Interest Expense	-$31.88M	-$30.98M	-$28.00M
YoY Change	12.24%	10.64%	18.14%
% of Operating Profit	-51.74%	-30.35%	-29.17%
Other Income/Expense, Net	$6.160M	$6.819M	$4.700M
YoY Change	50.24%	45.09%	0.0%
Pretax Income	$35.90M	$75.42M	$72.80M
YoY Change	68.53%	3.6%	20.93%
Income Tax	$4.243M	$10.33M	$7.000M
% Of Pretax Income	11.82%	13.7%	9.62%
Net Earnings	$31.65M	$65.09M	$62.50M
YoY Change	65.73%	4.14%	5.75%
Net Earnings / Revenue	9.89%	13.69%	13.75%
Basic Earnings Per Share	$0.52	$1.06	$1.05
Diluted Earnings Per Share	$0.52	$1.06	$1.04
COMMON SHARES
Basic Shares Outstanding	61.29M shares	61.26M shares	59.78M shares
Diluted Shares Outstanding	61.36M shares	61.31M shares	59.79M shares

Balance Sheet

Concept	2024 Q2	2024 Q1	2023 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$6.398M	$4.150M	$10.70M
YoY Change	-17.97%	-61.21%	-21.32%
Cash & Equivalents	$6.398M	$4.150M	$10.70M
Short-Term Investments
Other Short-Term Assets	$26.53M	$101.9M	$126.3M
YoY Change	-71.99%	-19.31%	-10.36%
Inventory	$115.0M	$103.8M	$92.50M
Prepaid Expenses
Receivables	$149.5M	$186.9M	$218.7M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$364.0M	$396.8M	$448.3M
YoY Change	1.92%	-11.48%	12.41%
LONG-TERM ASSETS
Property, Plant & Equipment	$6.193B	$6.087B	$5.703B
YoY Change	6.73%	6.73%	7.24%
Goodwill	$357.6M	$357.6M
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$50.10M	$792.4M	$772.4M
YoY Change	-93.55%	2.59%	3.25%
Total Long-Term Assets	$7.350B	$7.237B	$6.833B
YoY Change	5.95%	5.91%	6.38%
TOTAL ASSETS
Total Short-Term Assets	$364.0M	$396.8M	$448.3M
Total Long-Term Assets	$7.350B	$7.237B	$6.833B
Total Assets	$7.714B	$7.633B	$7.281B
YoY Change	5.75%	4.84%	6.73%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$91.26M	$96.54M	$104.8M
YoY Change	-3.53%	-7.88%	4.9%
Accrued Expenses	$244.0M	$298.3M	$308.6M
YoY Change	-1.33%	-3.34%	10.45%
Deferred Revenue
YoY Change
Short-Term Debt	$100.0M	$0.00	$0.00
YoY Change
Long-Term Debt Due	$224.9M	$3.400M	$247.5M
YoY Change	118.16%	-98.63%	8434.48%
Total Short-Term Liabilities	$699.8M	$444.7M	$680.7M
YoY Change	47.86%	-34.67%	66.27%
LONG-TERM LIABILITIES
Long-Term Debt	$2.570B	$2.772B	$2.349B
YoY Change	0.16%	18.02%	-6.8%
Other Long-Term Liabilities	$345.3M	$984.3M	$1.017B
YoY Change	-66.24%	-3.25%	0.08%
Total Long-Term Liabilities	$2.915B	$3.756B	$3.366B
YoY Change	-18.76%	11.59%	-4.82%
TOTAL LIABILITIES
Total Short-Term Liabilities	$699.8M	$444.7M	$680.7M
Total Long-Term Liabilities	$2.915B	$3.756B	$3.366B
Total Liabilities	$4.907B	$4.820B	$4.588B
YoY Change	6.49%	5.07%	2.98%
SHAREHOLDERS EQUITY
Retained Earnings	$829.0M	$837.0M
YoY Change
Common Stock	$648.0K	$648.0K
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)	$97.78M	$97.99M
YoY Change
Treasury Stock Shares
Shareholders Equity	$2.807B	$2.813B	$2.693B
YoY Change
Total Liabilities & Shareholders Equity	$7.714B	$7.633B	$7.281B
YoY Change	5.75%	4.84%	6.73%

Cashflow Statement

Concept	2024 Q2	2024 Q1	2023 Q1
OPERATING ACTIVITIES
Net Income	$31.65M	$65.09M	$62.50M
YoY Change	65.73%	4.14%	5.75%
Depreciation, Depletion And Amortization	$56.93M	$56.74M	$53.20M
YoY Change	8.65%	6.66%	8.79%
Cash From Operating Activities	$62.27M	$161.7M	$213.7M
YoY Change	-22.55%	-24.34%	9.2%
INVESTING ACTIVITIES
Capital Expenditures	$138.6M	$108.8M	$136.6M
YoY Change	9.31%	-20.39%	18.27%
Acquisitions
YoY Change
Other Investing Activities	-$675.0K	-$242.0K	$0.00
YoY Change	-71.88%		-100.0%
Cash From Investing Activities	-$139.3M	-$109.0M	-$136.6M
YoY Change	7.8%	-20.21%	17.66%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net		$100.0M	$0.00
YoY Change
Cash From Financing Activities	87.67M	-57.49M	-72.50M
YoY Change	91.42%	-20.71%	7.41%
NET CHANGE
Cash From Operating Activities	62.27M	161.7M	213.7M
Cash From Investing Activities	-139.3M	-109.0M	-136.6M
Cash From Financing Activities	87.67M	-57.49M	-72.50M
Net Change In Cash	10.66M	-4.805M	4.600M
YoY Change	-455.2%	-204.46%	-61.98%
FREE CASH FLOW
Cash From Operating Activities	$62.27M	$161.7M	$213.7M
Capital Expenditures	$138.6M	$108.8M	$136.6M
Free Cash Flow	-$76.34M	$52.92M	$77.10M
YoY Change	64.53%	-31.36%	-3.87%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2024Q1	us-gaap	Regulated Operating Revenue Gas RegulatedOperatingRevenueGas	132156000	usd
CY2023Q1	us-gaap	Regulated Operating Revenue Gas RegulatedOperatingRevenueGas	159234000	usd
CY2024Q1	us-gaap	Revenues Revenues	475342000	usd
CY2023Q1	us-gaap	Revenues Revenues	454542000	usd
CY2024Q1	nwe	Utility Operating Expense Fuel Purchased Supply And Direct Transmission Expense UtilityOperatingExpenseFuelPurchasedSupplyAndDirectTransmissionExpense	174721000	usd
CY2023Q1	nwe	Utility Operating Expense Fuel Purchased Supply And Direct Transmission Expense UtilityOperatingExpenseFuelPurchasedSupplyAndDirectTransmissionExpense	165492000	usd
CY2024Q1	us-gaap	Utilities Operating Expense Maintenance Operations And Other Costs And Expenses UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses	54182000	usd
CY2023Q1	us-gaap	Utilities Operating Expense Maintenance Operations And Other Costs And Expenses UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses	55861000	usd
CY2024Q1	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	40445000	usd
CY2023Q1	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	34748000	usd
CY2024Q1	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	47171000	usd
CY2023Q1	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	49151000	usd
CY2024Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	56743000	usd
CY2023Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	53248000	usd
CY2024Q1	us-gaap	Costs And Expenses CostsAndExpenses	373262000	usd
CY2023Q1	us-gaap	Costs And Expenses CostsAndExpenses	358500000	usd
CY2024Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	102080000	usd
CY2023Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	96042000	usd
CY2024Q1	us-gaap	Interest And Debt Expense InterestAndDebtExpense	30979000	usd
CY2023Q1	us-gaap	Interest And Debt Expense InterestAndDebtExpense	28008000	usd
CY2024Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	4319000	usd
CY2023Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	4737000	usd
CY2024Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	75420000	usd
CY2023Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	72771000	usd
CY2024Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10334000	usd
CY2023Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10241000	usd
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	65086000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	62530000	usd
CY2024Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	61266000	shares
CY2023Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	59776000	shares
CY2024Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.06
CY2023Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.05
CY2024Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.06
CY2023Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.05
CY2024Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.65
CY2023Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.64
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	65086000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	62530000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-1000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-2000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	0	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	167000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-113000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-113000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	112000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-56000	usd
CY2024Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	65198000	usd
CY2023Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	62474000	usd
CY2024Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	4150000	usd
CY2024Q1	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	61282747	shares
CY2024Q1	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2024Q1	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2024Q1	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	9164000	usd
CY2024Q1	us-gaap	Restricted Cash RestrictedCash	16232000	usd
CY2023Q4	us-gaap	Restricted Cash RestrictedCash	16023000	usd
CY2024Q1	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	186927000	usd
CY2023Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	212257000	usd
CY2024Q1	us-gaap	Inventory Net InventoryNet	103843000	usd
CY2023Q4	us-gaap	Inventory Net InventoryNet	114539000	usd
CY2024Q1	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	60788000	usd
CY2023Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	29626000	usd
CY2024Q1	us-gaap	Other Assets Current OtherAssetsCurrent	24896000	usd
CY2023Q4	us-gaap	Other Assets Current OtherAssetsCurrent	25397000	usd
CY2024Q1	us-gaap	Assets Current AssetsCurrent	396836000	usd
CY2023Q4	us-gaap	Assets Current AssetsCurrent	407006000	usd
CY2024Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	6086585000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	6039801000	usd
CY2024Q1	us-gaap	Goodwill Goodwill	357586000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	357586000	usd
CY2024Q1	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	743140000	usd
CY2023Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	743945000	usd
CY2024Q1	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	49287000	usd
CY2023Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	52314000	usd
CY2024Q1	us-gaap	Assets Assets	7633434000	usd
CY2023Q4	us-gaap	Assets Assets	7600652000	usd
CY2024Q1	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	3400000	usd
CY2023Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	3338000	usd
CY2024Q1	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	usd
CY2023Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	99950000	usd
CY2024Q1	us-gaap	Accounts Payable Current AccountsPayableCurrent	96544000	usd
CY2023Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	124340000	usd
CY2024Q1	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	298302000	usd
CY2023Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	246167000	usd
CY2024Q1	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	46438000	usd
CY2023Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	61103000	usd
CY2024Q1	us-gaap	Liabilities Current LiabilitiesCurrent	444684000	usd
CY2023Q4	us-gaap	Liabilities Current LiabilitiesCurrent	534898000	usd
CY2024Q1	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	4596000	usd
CY2023Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	5461000	usd
CY2024Q1	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2767107000	usd
CY2023Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2684635000	usd
CY2024Q1	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	619744000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	600520000	usd
CY2024Q1	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	651831000	usd
CY2023Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	657452000	usd
CY2024Q1	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	332454000	usd
CY2023Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	332372000	usd
CY2024Q1	us-gaap	Liabilities Liabilities	4820416000	usd
CY2023Q4	us-gaap	Liabilities Liabilities	4815338000	usd
CY2024Q1	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2023Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2024Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2024Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	200000000	shares
CY2024Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	64797508	shares
CY2024Q1	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2024Q1	us-gaap	Common Stock Value CommonStockValue	648000	usd
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	648000	usd
CY2024Q1	us-gaap	Treasury Stock Value TreasuryStockValue	97990000	usd
CY2023Q4	us-gaap	Treasury Stock Value TreasuryStockValue	97926000	usd
CY2024Q1	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	2080953000	usd
CY2023Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	2078753000	usd
CY2024Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	836951000	usd
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	811495000	usd
CY2024Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-7544000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-7656000	usd
CY2024Q1	us-gaap	Stockholders Equity StockholdersEquity	2813018000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	2785314000	usd
CY2024Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	7633434000	usd
CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	7600652000	usd
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	65086000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	62530000	usd
CY2024Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	56743000	usd
CY2023Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	53248000	usd
CY2024Q1	nwe	Amortization Of Debt Issue Costs Discount And Deferred Hedge Gain AmortizationOfDebtIssueCostsDiscountAndDeferredHedgeGain	1186000	usd
CY2023Q1	nwe	Amortization Of Debt Issue Costs Discount And Deferred Hedge Gain AmortizationOfDebtIssueCostsDiscountAndDeferredHedgeGain	1349000	usd
CY2024Q1	us-gaap	Share Based Compensation ShareBasedCompensation	2051000	usd
CY2023Q1	us-gaap	Share Based Compensation ShareBasedCompensation	3308000	usd
CY2024Q1	us-gaap	Increase Decrease In Allowance For Equity Funds Used During Construction IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction	4288000	usd
CY2023Q1	us-gaap	Increase Decrease In Allowance For Equity Funds Used During Construction IncreaseDecreaseInAllowanceForEquityFundsUsedDuringConstruction	3715000	usd
CY2024Q1	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	1000	usd
CY2023Q1	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	18000	usd
CY2024Q1	us-gaap	Other Noncash Expense OtherNoncashExpense	4659000	usd
CY2023Q1	us-gaap	Other Noncash Expense OtherNoncashExpense	0	usd
CY2024Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	9035000	usd
CY2023Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-10420000	usd
CY2024Q1	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-25330000	usd
CY2023Q1	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-26208000	usd
CY2024Q1	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-10695000	usd
CY2023Q1	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-14814000	usd
CY2024Q1	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-501000	usd
CY2023Q1	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-4714000	usd
CY2024Q1	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-9391000	usd
CY2023Q1	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-44193000	usd
CY2024Q1	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	52132000	usd
CY2023Q1	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	58236000	usd
CY2024Q1	us-gaap	Increase Decrease In Other Regulatory Assets IncreaseDecreaseInOtherRegulatoryAssets	31161000	usd
CY2023Q1	us-gaap	Increase Decrease In Other Regulatory Assets IncreaseDecreaseInOtherRegulatoryAssets	-49391000	usd
CY2024Q1	us-gaap	Increase Decrease In Regulatory Liabilities IncreaseDecreaseInRegulatoryLiabilities	-14665000	usd
CY2023Q1	us-gaap	Increase Decrease In Regulatory Liabilities IncreaseDecreaseInRegulatoryLiabilities	-1378000	usd
CY2024Q1	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	6235000	usd
CY2023Q1	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	375000	usd
CY2024Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	161677000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	213699000	usd
CY2024Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	108754000	usd
CY2023Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	136604000	usd
CY2024Q1	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	242000	usd
CY2023Q1	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	0	usd
CY2024Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-108996000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-136604000	usd
CY2024Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	39630000	usd
CY2023Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	38041000	usd
CY2024Q1	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	215000000	usd
CY2023Q1	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	220000000	usd
CY2024Q1	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	100000000	usd
CY2023Q1	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	usd
CY2024Q1	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	-132000000	usd
CY2023Q1	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	-253000000	usd
CY2024Q1	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-856000	usd
CY2023Q1	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-1415000	usd
CY2024Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-57486000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-72456000	usd
CY2024Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-4805000	usd
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	4639000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	25187000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	22463000	usd
CY2024Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	20382000	usd
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	27102000	usd
CY2024Q1	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-4810000	usd
CY2023Q1	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	3204000	usd
CY2024Q1	us-gaap	Interest Paid Net InterestPaidNet	18128000	usd
CY2023Q1	us-gaap	Interest Paid Net InterestPaidNet	18196000	usd
CY2024Q1	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	21129000	usd
CY2023Q1	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	12209000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	2665183000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	62530000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-2000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-113000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	167000	usd
CY2023Q1	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	3215000	usd
CY2023Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	169000	usd
CY2023Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.640
CY2023Q1	us-gaap	Dividends Common Stock DividendsCommonStock	38041000	usd
CY2023Q1	us-gaap	Stockholders Equity StockholdersEquity	2693000000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	2785314000	usd
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	65086000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-1000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-113000	usd
CY2024Q1	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	1767000	usd
CY2024Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	369000	usd
CY2024Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.650
CY2024Q1	us-gaap	Dividends Common Stock DividendsCommonStock	39630000	usd
CY2024Q1	us-gaap	Stockholders Equity StockholdersEquity	2813018000	usd
CY2023Q4	nwe	Number Of Customers NumberOfCustomers	775300	customers
CY2024Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	4150000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	9164000	usd
CY2023Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	10730000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	8489000	usd
CY2024Q1	us-gaap	Restricted Cash RestrictedCash	16232000	usd
CY2023Q4	us-gaap	Restricted Cash RestrictedCash	16023000	usd
CY2023Q1	us-gaap	Restricted Cash RestrictedCash	16372000	usd
CY2022Q4	us-gaap	Restricted Cash RestrictedCash	13974000	usd
CY2024Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	20382000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	25187000	usd
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	27102000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	22463000	usd
CY2024Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	75420000	usd
CY2023Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	72771000	usd
CY2024Q1	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	15838000	usd
CY2024Q1	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2023Q1	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	15282000	usd
CY2023Q1	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2024Q1	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	639000	usd
CY2024Q1	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.009
CY2023Q1	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	959000	usd
CY2023Q1	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.013
CY2024Q1	us-gaap	Income Tax Reconciliation Deductions Other IncomeTaxReconciliationDeductionsOther	6174000	usd
CY2024Q1	us-gaap	Effective Income Tax Rate Reconciliation Deductions Other EffectiveIncomeTaxRateReconciliationDeductionsOther	0.082
CY2023Q1	us-gaap	Income Tax Reconciliation Deductions Other IncomeTaxReconciliationDeductionsOther	5845000	usd
CY2023Q1	us-gaap	Effective Income Tax Rate Reconciliation Deductions Other EffectiveIncomeTaxRateReconciliationDeductionsOther	0.080
CY2024Q1	us-gaap	Income Tax Reconciliation Tax Credits Other IncomeTaxReconciliationTaxCreditsOther	2983000	usd
CY2024Q1	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Other EffectiveIncomeTaxRateReconciliationTaxCreditsOther	0.040
CY2023Q1	us-gaap	Income Tax Reconciliation Tax Credits Other IncomeTaxReconciliationTaxCreditsOther	3199000	usd
CY2023Q1	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Other EffectiveIncomeTaxRateReconciliationTaxCreditsOther	0.044
CY2024Q1	nwe	Effective Income Tax Rate Reconciliation Amortizationof Excess Deferred Taxes EffectiveIncomeTaxRateReconciliationAmortizationofExcessDeferredTaxes	-360000	usd
CY2024Q1	nwe	Effective Income Tax Rate Reconciliation Amortizationof Excess Deferred Taxes Percent EffectiveIncomeTaxRateReconciliationAmortizationofExcessDeferredTaxesPercent	-0.005
CY2023Q1	nwe	Effective Income Tax Rate Reconciliation Amortizationof Excess Deferred Taxes EffectiveIncomeTaxRateReconciliationAmortizationofExcessDeferredTaxes	-799000	usd
CY2023Q1	nwe	Effective Income Tax Rate Reconciliation Amortizationof Excess Deferred Taxes Percent EffectiveIncomeTaxRateReconciliationAmortizationofExcessDeferredTaxesPercent	-0.011
CY2024Q1	nwe	Income Tax Reconciliation Deductions Accelerated Tax Depreciation Flow Through Adjustment IncomeTaxReconciliationDeductionsAcceleratedTaxDepreciationFlowThroughAdjustment	-3079000	usd
CY2024Q1	nwe	Income Tax Reconciliation Accelerated Tax Depreciation Flow Through Adjustment IncomeTaxReconciliationAcceleratedTaxDepreciationFlowThroughAdjustment	-0.041
CY2023Q1	nwe	Income Tax Reconciliation Deductions Accelerated Tax Depreciation Flow Through Adjustment IncomeTaxReconciliationDeductionsAcceleratedTaxDepreciationFlowThroughAdjustment	-688000	usd
CY2023Q1	nwe	Income Tax Reconciliation Accelerated Tax Depreciation Flow Through Adjustment IncomeTaxReconciliationAcceleratedTaxDepreciationFlowThroughAdjustment	-0.009
CY2024Q1	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	334000	usd
CY2024Q1	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.004
CY2023Q1	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	388000	usd
CY2023Q1	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.005
CY2024Q1	nwe	Reduction To Previously Claimed Alternative Minimum Tax Credit Amount ReductionToPreviouslyClaimedAlternativeMinimumTaxCreditAmount	0	usd
CY2024Q1	nwe	Reduction To Previously Claimed Alternative Minimum Tax Credit Percent ReductionToPreviouslyClaimedAlternativeMinimumTaxCreditPercent	0
CY2023Q1	nwe	Reduction To Previously Claimed Alternative Minimum Tax Credit Amount ReductionToPreviouslyClaimedAlternativeMinimumTaxCreditAmount	3186000	usd
CY2023Q1	nwe	Reduction To Previously Claimed Alternative Minimum Tax Credit Percent ReductionToPreviouslyClaimedAlternativeMinimumTaxCreditPercent	0.044
CY2024Q1	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-39000	usd
CY2024Q1	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.000
CY2023Q1	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-419000	usd
CY2023Q1	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.005
CY2024Q1	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-5504000	usd
CY2024Q1	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	-0.073
CY2023Q1	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-5041000	usd
CY2023Q1	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	-0.069
CY2024Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10334000	usd
CY2024Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.137
CY2023Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10241000	usd
CY2023Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.141
CY2024Q1	nwe	Unrecognized Tax Benefit More Likely Than Not Percentage Threshold UnrecognizedTaxBenefitMoreLikelyThanNotPercentageThreshold	0.50
CY2024Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	27700000	usd
CY2024Q1	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	24300000	usd
CY2024Q1	us-gaap	Decrease In Unrecognized Tax Benefits Is Reasonably Possible DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible	16900000	usd
CY2024Q1	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	5300000	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	4500000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-1000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-1000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-2000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-2000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	-153000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	-40000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-113000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	-153000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	-40000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-113000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	0	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	0	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	0	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	212000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	45000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	167000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	152000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	40000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	112000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-61000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-5000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-56000	usd
CY2024Q1	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	1436000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	1437000	usd
CY2024Q1	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	-9260000	usd
CY2023Q4	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	-9373000	usd
CY2024Q1	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-280000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-280000	usd
CY2024Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-7544000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-7656000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-7656000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-1000	usd
CY2024Q1	us-gaap	Interest Rate Cash Flow Hedge Gain Loss Reclassified To Earnings Net InterestRateCashFlowHedgeGainLossReclassifiedToEarningsNet	113000	usd
CY2024Q1	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	0	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	112000	usd
CY2024Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-7544000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-7848000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-2000	usd
CY2023Q1	us-gaap	Interest Rate Cash Flow Hedge Gain Loss Reclassified To Earnings Net InterestRateCashFlowHedgeGainLossReclassifiedToEarningsNet	113000	usd
CY2023Q1	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-167000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-56000	usd
CY2023Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-7904000	usd
CY2024Q1	us-gaap	Long Term Debt Maturity Date LongTermDebtMaturityDate	2025-04-11
CY2024Q1	us-gaap	Revenues Revenues	475342000	usd
CY2024Q1	nwe	Utility Operating Expense Fuel Purchased Supply And Direct Transmission Expense UtilityOperatingExpenseFuelPurchasedSupplyAndDirectTransmissionExpense	174721000	usd
CY2024Q1	nwe	Utility Margin UtilityMargin	300621000	usd
CY2024Q1	us-gaap	Utilities Operating Expense Maintenance Operations And Other Costs And Expenses UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses	54182000	usd
CY2024Q1	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	40445000	usd
CY2024Q1	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	47171000	usd
CY2024Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	56743000	usd
CY2024Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	102080000	usd
CY2024Q1	us-gaap	Interest And Debt Expense InterestAndDebtExpense	30979000	usd
CY2024Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	4319000	usd
CY2024Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10334000	usd
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	65086000	usd
CY2024Q1	us-gaap	Assets Assets	7633434000	usd
CY2024Q1	us-gaap	Segment Expenditure Addition To Long Lived Assets SegmentExpenditureAdditionToLongLivedAssets	108754000	usd
CY2023Q1	us-gaap	Revenues Revenues	454542000	usd
CY2023Q1	nwe	Utility Operating Expense Fuel Purchased Supply And Direct Transmission Expense UtilityOperatingExpenseFuelPurchasedSupplyAndDirectTransmissionExpense	165492000	usd
CY2023Q1	nwe	Utility Margin UtilityMargin	289050000	usd
CY2023Q1	us-gaap	Utilities Operating Expense Maintenance Operations And Other Costs And Expenses UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses	55861000	usd
CY2023Q1	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	34748000	usd
CY2023Q1	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	49151000	usd
CY2023Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	53248000	usd
CY2023Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	96042000	usd
CY2023Q1	us-gaap	Interest And Debt Expense InterestAndDebtExpense	28008000	usd
CY2023Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	4737000	usd
CY2023Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10241000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	62530000	usd
CY2023Q1	us-gaap	Assets Assets	7280994000	usd
CY2023Q1	us-gaap	Segment Expenditure Addition To Long Lived Assets SegmentExpenditureAdditionToLongLivedAssets	136604000	usd
CY2024Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	432800000	usd
CY2023Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	506400000	usd
CY2024Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	61265967	shares
CY2023Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	59776195	shares
CY2024Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	43652	shares
CY2023Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	13009	shares
CY2024Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	61309619	shares
CY2023Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	59789204	shares
CY2024Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	54182	shares
CY2023Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	69853	shares
CY2024Q1	nwe	Minimum Expected Future Employer Pension Contributions Remainderof Fiscal Year MinimumExpectedFutureEmployerPensionContributionsRemainderofFiscalYear	11200000	usd
CY2024Q1	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false
CY2024Q1	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false
CY2024Q1	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
CY2024Q1	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false

Files In Submission

Name	View Source	Status
0001993004-24-000035-index-headers.html	Edgar Link	pending
0001993004-24-000035-index.html	Edgar Link	pending
0001993004-24-000035.txt	Edgar Link	pending
0001993004-24-000035-xbrl.zip	Edgar Link	pending
ex311certificationq12024.htm	Edgar Link	pending
ex312certificationq12024.htm	Edgar Link	pending
ex321certificationq12024.htm	Edgar Link	pending
ex322certificationq12024.htm	Edgar Link	pending
exh107keyemployeeseverance.htm	Edgar Link	pending
exh108equitycompensationpl.htm	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
nwe-20240331.htm	Edgar Link	pending
nwe-20240331.xsd	Edgar Link	pending
nwe-20240331_g1.jpg	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
nwe-20240331_cal.xml	Edgar Link	unprocessable
nwe-20240331_def.xml	Edgar Link	unprocessable
nwe-20240331_lab.xml	Edgar Link	unprocessable
nwe-20240331_pre.xml	Edgar Link	unprocessable
nwe-20240331_htm.xml	Edgar Link	completed
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable

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$NWE
NorthWestern Energy Group, Inc. Stock $nwe

2024 Q2 Form 10-Q Financial Statement

#000199300424000035 Filed on April 26, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NWE NorthWestern Energy Group, Inc. Stock $nwe

2024 Q2 Form 10-Q Financial Statement

#000199300424000035 Filed on April 26, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NWE
NorthWestern Energy Group, Inc. Stock $nwe