$XEL
XCEL ENERGY INC Stock $xel

$xel Overview Financials Valuation SEC Filings Company Website

2019 Form 10-K Financial Statement

#000007290320000011 Filed on February 21, 2020

Income Statement

Concept	2019	2018 Q4	2018 Q3
Revenue	$11.53B	$2.880B	$3.048B
YoY Change	-0.07%	3.0%	1.03%
Cost Of Revenue	$958.0M	$313.0M	$67.00M
YoY Change	-75.14%	9.06%	-6.94%
Gross Profit	$10.57B	$2.567B	$2.981B
YoY Change	37.59%	2.35%	1.22%
Gross Profit Margin	91.69%	89.13%	97.8%
Selling, General & Admin	$540.0M	$74.00M	$77.00M
YoY Change	86.21%	10.45%	4.05%
% of Gross Profit	5.11%	2.88%	2.58%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$1.904B	$476.0M	$474.0M
YoY Change	6.91%	16.7%	16.81%
% of Gross Profit	18.01%	18.54%	15.9%
Operating Expenses	$8.460B	$2.226B	$2.285B
YoY Change	-2.69%	7.69%	7.73%
Operating Profit	$2.104B	$339.0M	$696.0M
YoY Change	7.07%	-22.95%	-15.53%
Interest Expense	$773.0M	-$113.0M	$177.0M
YoY Change	10.43%	5.61%	5.36%
% of Operating Profit	36.74%	-33.33%	25.43%
Other Income/Expense, Net	$16.00M	-$20.00M	-$7.000M
YoY Change	-214.29%	-25.93%	600.0%
Pretax Income	$1.500B	$208.0M	$564.0M
YoY Change	4.02%	-32.25%	-19.08%
Income Tax	$128.0M	-$6.000M	$73.00M
% Of Pretax Income	8.53%	-2.88%	12.94%
Net Earnings	$1.372B	$214.0M	$491.0M
YoY Change	8.8%	13.23%	-0.2%
Net Earnings / Revenue	11.9%	7.43%	16.11%
Basic Earnings Per Share	$2.64	$0.42	$0.96
Diluted Earnings Per Share	$2.64	$0.42	$0.96
COMMON SHARES
Basic Shares Outstanding	519.0M shares	513.8M shares	510.0M shares
Diluted Shares Outstanding	520.0M shares		511.0M shares

Balance Sheet

Concept	2019	2018 Q4	2018 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$248.0M	$147.0M	$213.0M
YoY Change	68.71%	77.11%	26.79%
Cash & Equivalents	$248.0M	$147.0M	$213.0M
Short-Term Investments
Other Short-Term Assets	$1.484B	$1.539B	$1.406B
YoY Change	-3.57%	3.78%	7.57%
Inventory	$544.0M	$548.0M	$528.0M
Prepaid Expenses
Receivables	$837.0M	$860.0M	$856.0M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$3.113B	$3.094B	$3.003B
YoY Change	0.61%	4.07%	3.59%
LONG-TERM ASSETS
Property, Plant & Equipment	$41.29B	$36.94B	$35.88B
YoY Change	11.77%	7.62%	5.68%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$291.0M	$141.0M	$140.0M
YoY Change	106.38%	0.71%	6.22%
Other Assets	$5.750B	$272.0M	$272.0M
YoY Change	-1.0%	-2.16%	4.97%
Total Long-Term Assets	$47.34B	$42.89B	$41.83B
YoY Change	10.36%	7.08%	5.72%
TOTAL ASSETS
Total Short-Term Assets	$3.113B	$3.094B	$3.003B
Total Long-Term Assets	$47.34B	$42.89B	$41.83B
Total Assets	$50.45B	$45.99B	$44.84B
YoY Change	9.7%	6.87%	5.57%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.294B	$1.237B	$1.189B
YoY Change	4.61%	-0.48%	19.8%
Accrued Expenses	$386.0M	$174.0M	$158.0M
YoY Change	121.84%	0.0%	6.76%
Deferred Revenue
YoY Change
Short-Term Debt	$595.0M	$1.038B	$437.0M
YoY Change	-42.68%	27.52%	-14.98%
Long-Term Debt Due	$706.0M	$406.0M	$556.0M
YoY Change	73.89%	-11.16%	82.3%
Total Short-Term Liabilities	$4.568B	$4.460B	$3.838B
YoY Change	2.42%	9.1%	14.9%
LONG-TERM LIABILITIES
Long-Term Debt	$17.48B	$15.80B	$15.51B
YoY Change	10.64%	8.84%	6.42%
Other Long-Term Liabilities	$10.60B	$206.0M	$202.0M
YoY Change	14.18%	42.07%	39.77%
Total Long-Term Liabilities	$28.08B	$206.0M	$202.0M
YoY Change	11.95%	42.07%	39.77%
TOTAL LIABILITIES
Total Short-Term Liabilities	$4.568B	$4.460B	$3.838B
Total Long-Term Liabilities	$28.08B	$206.0M	$202.0M
Total Liabilities	$37.21B	$4.666B	$4.040B
YoY Change	10.2%	10.23%	15.93%
SHAREHOLDERS EQUITY
Retained Earnings		$4.893B	$4.876B
YoY Change		10.88%	11.17%
Common Stock		$7.453B	$7.408B
YoY Change		3.99%	3.49%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$13.24B	$12.22B	$12.17B
YoY Change
Total Liabilities & Shareholders Equity	$50.45B	$45.99B	$44.84B
YoY Change	9.7%	6.87%	5.57%

Cashflow Statement

Concept	2019	2018 Q4	2018 Q3
OPERATING ACTIVITIES
Net Income	$1.372B	$214.0M	$491.0M
YoY Change	8.8%	13.23%	-0.2%
Depreciation, Depletion And Amortization	$1.904B	$476.0M	$474.0M
YoY Change	6.91%	16.7%	16.81%
Cash From Operating Activities	$3.263B	$629.0M	$1.056B
YoY Change	4.52%	-17.11%	-1.8%
INVESTING ACTIVITIES
Capital Expenditures	-$4.225B	-$1.197B	-$857.0M
YoY Change	6.77%	12.66%	9.49%
Acquisitions
YoY Change
Other Investing Activities	$98.00M	-$83.00M	$16.00M
YoY Change	988.89%	-1727.45%	-12.09%
Cash From Investing Activities	-$4.343B	-$1.280B	-$841.0M
YoY Change	8.96%	21.05%	10.01%
FINANCING ACTIVITIES
Cash Dividend Paid	$791.0M
YoY Change	8.36%
Common Stock Issuance & Retirement, Net	$458.0M
YoY Change	-300.0%
Debt Paid & Issued, Net	$949.0M
YoY Change	109.96%
Cash From Financing Activities	$1.181B	585.0M	-334.0M
YoY Change	27.26%	174.39%	63.41%
NET CHANGE
Cash From Operating Activities	$3.263B	629.0M	1.056B
Cash From Investing Activities	-$4.343B	-1.280B	-841.0M
Cash From Financing Activities	$1.181B	585.0M	-334.0M
Net Change In Cash	$101.0M	-66.00M	-119.0M
YoY Change	57.81%	-22.72%	-211.74%
FREE CASH FLOW
Cash From Operating Activities	$3.263B	$629.0M	$1.056B
Capital Expenditures	-$4.225B	-$1.197B	-$857.0M
Free Cash Flow	$7.488B	$1.826B	$1.913B
YoY Change	5.78%	0.26%	2.95%

Facts In Submission

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CY2019	dei	Entity Registrant Name EntityRegistrantName	XCEL ENERGY INC
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CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	520000000	shares
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CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	509000000	shares
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.64
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.47
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.26
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.64
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.47
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.25
CY2019	us-gaap	Net Income Loss NetIncomeLoss	1372000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	1261000000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	1148000000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-6000000	USD
CY2017	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-3000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-3000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-9000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-7000000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-23000000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-5000000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-3000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-3000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-3000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-17000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	7000000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1355000000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1262000000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1155000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	1372000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	1261000000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	1148000000	USD
CY2019	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	1785000000	USD
CY2018	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	1659000000	USD
CY2017	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	1495000000	USD
CY2019	xel	Nuclear Fuel Amortization NuclearFuelAmortization	119000000	USD
CY2018	xel	Nuclear Fuel Amortization NuclearFuelAmortization	122000000	USD
CY2017	xel	Nuclear Fuel Amortization NuclearFuelAmortization	114000000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	143000000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	218000000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	640000000	USD
CY2019	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	77000000	USD
CY2018	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	108000000	USD
CY2017	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	75000000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	39000000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	35000000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	30000000	USD
CY2019	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	40000000	USD
CY2018	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	37000000	USD
CY2017	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	41000000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	42000000	USD
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	42000000	USD
CY2017	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	39000000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	58000000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	45000000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	57000000	USD
CY2019	xel	Gain Loss On Hedging And Derivative Transactions GainLossOnHedgingAndDerivativeTransactions	-45000000	USD
CY2018	xel	Gain Loss On Hedging And Derivative Transactions GainLossOnHedgingAndDerivativeTransactions	-22000000	USD
CY2017	xel	Gain Loss On Hedging And Derivative Transactions GainLossOnHedgingAndDerivativeTransactions	-2000000	USD
CY2019	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	20000000	USD
CY2018	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	105000000	USD
CY2017	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	60000000	USD
CY2019	us-gaap	Increase Decrease In Unbilled Receivables IncreaseDecreaseInUnbilledReceivables	-42000000	USD
CY2018	us-gaap	Increase Decrease In Unbilled Receivables IncreaseDecreaseInUnbilledReceivables	-9000000	USD
CY2017	us-gaap	Increase Decrease In Unbilled Receivables IncreaseDecreaseInUnbilledReceivables	34000000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	84000000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	65000000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	3000000	USD
CY2019	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-25000000	USD
CY2018	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-18000000	USD
CY2017	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-9000000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-12000000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	90000000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	43000000	USD
CY2019	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	66000000	USD
CY2018	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	-223000000	USD
CY2017	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	16000000	USD
CY2019	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-15000000	USD
CY2018	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-61000000	USD
CY2017	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-38000000	USD
CY2019	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	-135000000	USD
CY2018	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	-179000000	USD
CY2017	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	-133000000	USD
CY2019	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	40000000	USD
CY2018	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-71000000	USD
CY2017	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-73000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	3263000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	3122000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	3126000000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	4225000000	USD
CY2018	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	3957000000	USD
CY2017	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	3244000000	USD
CY2019	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	995000000	USD
CY2018	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	853000000	USD
CY2017	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	1697000000	USD
CY2019	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	975000000	USD
CY2018	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	833000000	USD
CY2017	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	1669000000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	98000000	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	9000000	USD
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	24000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-4343000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-3986000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-3296000000	USD
CY2019	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-443000000	USD
CY2018	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	225000000	USD
CY2017	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	422000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	2920000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1675000000	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1518000000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	949000000	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	452000000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1030000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	458000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	230000000	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2017	us-gaap	Payments Of Dividends PaymentsOfDividends	721000000	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-14000000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	791000000	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	730000000	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-20000000	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-21000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1181000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	928000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	168000000	USD
CY2019	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	101000000	USD
CY2018	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	64000000	USD
CY2017	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-2000000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	147000000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	83000000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	85000000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	248000000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	147000000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	83000000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	698000000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	633000000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	616000000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-53000000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-27000000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-44000000	USD
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	421000000	USD
CY2018	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	388000000	USD
CY2017	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	464000000	USD
CY2019	xel	Inventorytransferstoplantpropertyandequipment Inventorytransferstoplantpropertyandequipment	88000000	USD
CY2018	xel	Inventorytransferstoplantpropertyandequipment Inventorytransferstoplantpropertyandequipment	129000000	USD
CY2017	xel	Inventorytransferstoplantpropertyandequipment Inventorytransferstoplantpropertyandequipment	63000000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	1843000000	USD
CY2018	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
CY2017	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
CY2019	us-gaap	Allowance For Funds Used During Construction Investing Activities AllowanceForFundsUsedDuringConstructionInvestingActivities	77000000	USD
CY2018	us-gaap	Allowance For Funds Used During Construction Investing Activities AllowanceForFundsUsedDuringConstructionInvestingActivities	108000000	USD
CY2017	us-gaap	Allowance For Funds Used During Construction Investing Activities AllowanceForFundsUsedDuringConstructionInvestingActivities	75000000	USD
CY2019	us-gaap	Stock Issued1 StockIssued1	63000000	USD
CY2018	us-gaap	Stock Issued1 StockIssued1	67000000	USD
CY2017	us-gaap	Stock Issued1 StockIssued1	31000000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	248000000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	147000000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	837000000	USD
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	860000000	USD
CY2019Q4	xel	Accrued Unbilled Revenues AccruedUnbilledRevenues	713000000	USD
CY2018Q4	xel	Accrued Unbilled Revenues AccruedUnbilledRevenues	755000000	USD
CY2019Q4	us-gaap	Public Utilities Inventory PublicUtilitiesInventory	544000000	USD
CY2018Q4	us-gaap	Public Utilities Inventory PublicUtilitiesInventory	548000000	USD
CY2019Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	488000000	USD
CY2018Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	464000000	USD
CY2019Q4	us-gaap	Derivative Instruments And Hedges DerivativeInstrumentsAndHedges	55000000	USD
CY2018Q4	us-gaap	Derivative Instruments And Hedges DerivativeInstrumentsAndHedges	87000000	USD
CY2019Q4	us-gaap	Prepaid Taxes PrepaidTaxes	43000000	USD
CY2018Q4	us-gaap	Prepaid Taxes PrepaidTaxes	79000000	USD
CY2019Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	185000000	USD
CY2018Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	154000000	USD
CY2019Q4	us-gaap	Assets Current AssetsCurrent	3113000000	USD
CY2018Q4	us-gaap	Assets Current AssetsCurrent	3094000000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	39483000000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	36944000000	USD
CY2019Q4	us-gaap	Investments And Other Noncurrent Assets InvestmentsAndOtherNoncurrentAssets	2731000000	USD
CY2018Q4	us-gaap	Investments And Other Noncurrent Assets InvestmentsAndOtherNoncurrentAssets	2317000000	USD
CY2019Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	2935000000	USD
CY2018Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	3326000000	USD
CY2019Q4	us-gaap	Derivative Instruments And Hedges Noncurrent DerivativeInstrumentsAndHedgesNoncurrent	22000000	USD
CY2018Q4	us-gaap	Derivative Instruments And Hedges Noncurrent DerivativeInstrumentsAndHedgesNoncurrent	34000000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1672000000	USD
CY2018Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	0	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	492000000	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	272000000	USD
CY2019Q4	xel	Other Assets Excluding Property Plant And Equipment OtherAssetsExcludingPropertyPlantAndEquipment	7852000000	USD
CY2018Q4	xel	Other Assets Excluding Property Plant And Equipment OtherAssetsExcludingPropertyPlantAndEquipment	5949000000	USD
CY2019Q4	us-gaap	Assets Assets	50448000000	USD
CY2018Q4	us-gaap	Assets Assets	45987000000	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	702000000	USD
CY2018Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	406000000	USD
CY2019Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	595000000	USD
CY2018Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	1038000000	USD
CY2019Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	1294000000	USD
CY2018Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	1237000000	USD
CY2019Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	407000000	USD
CY2018Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	436000000	USD
CY2019Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	466000000	USD
CY2018Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	450000000	USD
CY2019Q4	us-gaap	Interest Payable Current InterestPayableCurrent	192000000	USD
CY2018Q4	us-gaap	Interest Payable Current InterestPayableCurrent	174000000	USD
CY2019Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	212000000	USD
CY2018Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	195000000	USD
CY2019Q4	us-gaap	Derivative Instruments And Hedges Liabilities DerivativeInstrumentsAndHedgesLiabilities	38000000	USD
CY2018Q4	us-gaap	Derivative Instruments And Hedges Liabilities DerivativeInstrumentsAndHedgesLiabilities	61000000	USD
CY2019Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	662000000	USD
CY2018Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	463000000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	4568000000	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	4460000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	4509000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	4165000000	USD
CY2019Q4	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	49000000	USD
CY2018Q4	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	54000000	USD
CY2019Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	5077000000	USD
CY2018Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	5187000000	USD
CY2019Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	2701000000	USD
CY2018Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	2568000000	USD
CY2019Q4	us-gaap	Derivative Instruments And Hedges Liabilities Noncurrent DerivativeInstrumentsAndHedgesLiabilitiesNoncurrent	175000000	USD
CY2018Q4	us-gaap	Derivative Instruments And Hedges Liabilities Noncurrent DerivativeInstrumentsAndHedgesLiabilitiesNoncurrent	129000000	USD
CY2019Q4	us-gaap	Customer Advances For Construction CustomerAdvancesForConstruction	203000000	USD
CY2018Q4	us-gaap	Customer Advances For Construction CustomerAdvancesForConstruction	199000000	USD
CY2019Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	785000000	USD
CY2018Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	994000000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	1549000000	USD
CY2018Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	0	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	186000000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	206000000	USD
CY2019Q4	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	15234000000	USD
CY2018Q4	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	13502000000	USD
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2018Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	17407000000	USD
CY2018Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	15803000000	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	1311000000	USD
CY2018Q4	us-gaap	Common Stock Value CommonStockValue	1285000000	USD
CY2019Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	6656000000	USD
CY2018Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	6168000000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	5413000000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	4893000000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-141000000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-124000000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	13239000000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	12222000000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	50448000000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	45987000000	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	11021000000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	1148000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	7000000	USD
CY2017	us-gaap	Dividends Common Stock DividendsCommonStock	736000000	USD
CY2017	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	5000000	USD
CY2017	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	3000000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	13000000	USD
CY2017	xel	Tax Cutsand Jobs Actof2017 Reclassificationfrom Aoc Ito Retained Earnings TaxCutsandJobsActof2017ReclassificationfromAOCItoRetainedEarnings	0	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	11455000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	1261000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1000000	USD
CY2018	us-gaap	Dividends Common Stock DividendsCommonStock	780000000	USD
CY2018	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	270000000	USD
CY2018	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	1000000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	16000000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	12222000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	1372000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-17000000	USD
CY2019	us-gaap	Dividends Common Stock DividendsCommonStock	846000000	USD
CY2019	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	494000000	USD
CY2019	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	0	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	14000000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	13239000000	USD
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<div style="line-height:120%;padding-bottom:6px;text-align:justify;font-size:10pt;"><span style="font-family:Arial Narrow;font-size:10pt;font-weight:bold;">Use of Estimates </span><span style="font-family:Arial Narrow;font-size:10pt;">— Xcel Energy uses estimates based on the best information available in recording transactions and balances resulting from business operations. </span></div><div style="line-height:120%;padding-bottom:6px;text-align:justify;font-size:10pt;"><span style="font-family:Arial Narrow;font-size:10pt;">Estimates are used on items such as plant depreciable lives or potential disallowances, AROs, certain regulatory assets and liabilities, tax provisions, uncollectible amounts, environmental costs, unbilled revenues, jurisdictional fuel and energy cost allocations and actuarially determined benefit costs. Recorded estimates are revised when better information becomes available or actual amounts can be determined. Revisions can affect operating results.</span></div>
CY2019	xel	Depreciation Expense Expressed As Percentage Of Average Depreciable Property DepreciationExpenseExpressedAsPercentageOfAverageDepreciableProperty	0.033
CY2018	xel	Depreciation Expense Expressed As Percentage Of Average Depreciable Property DepreciationExpenseExpressedAsPercentageOfAverageDepreciableProperty	0.031
CY2019	xel	Minimum Amount Of Time Between Nuclear Decommissioning Studies In Years MinimumAmountOfTimeBetweenNuclearDecommissioningStudiesInYears	P3Y
CY2019	xel	Maximum Number Of Months Of Remaining Maturity At Time Of Purchase To Consider Investments In Certain Instruments As Cash Equivalents MaximumNumberOfMonthsOfRemainingMaturityAtTimeOfPurchaseToConsiderInvestmentsInCertainInstrumentsAsCashEquivalents	P3M
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	55000000	USD
CY2019Q4	us-gaap	Public Utilities Inventory PublicUtilitiesInventory	544000000	USD
CY2018Q4	us-gaap	Public Utilities Inventory PublicUtilitiesInventory	548000000	USD
CY2019	xel	Maximum Number Of Months Following End Of Annual Period In Which Revenues Are Earned To Be Included In Incentive Programs MaximumNumberOfMonthsFollowingEndOfAnnualPeriodInWhichRevenuesAreEarnedToBeIncludedInIncentivePrograms	P24M
CY2019	xel	Maximum Number Of Months Following End Of Annual Period In Which Revenues Are Earned To Be Included In Incentive Programs MaximumNumberOfMonthsFollowingEndOfAnnualPeriodInWhichRevenuesAreEarnedToBeIncludedInIncentivePrograms	P24M
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	55844000000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	52249000000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	16735000000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	15659000000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	39483000000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	36944000000	USD
CY2019Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	488000000	USD
CY2019Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	2935000000	USD
CY2018Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	464000000	USD
CY2018Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	3326000000	USD
CY2019Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	407000000	USD
CY2019Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	5077000000	USD
CY2018Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	436000000	USD
CY2018Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	5187000000	USD
CY2019Q4	us-gaap	Remaining Amounts Of Regulatory Assets For Which No Return On Investment During Recovery Period Is Provided RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided	544000000	USD
CY2018Q4	us-gaap	Remaining Amounts Of Regulatory Assets For Which No Return On Investment During Recovery Period Is Provided RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided	512000000	USD
CY2017Q4	xel	Tax Cutsand Jobs Actof2017 Incomplete Accounting Changein Tax Rate Regulatory Liability Customer Refunds Weighted Average Period TaxCutsandJobsActof2017IncompleteAccountingChangeinTaxRateRegulatoryLiabilityCustomerRefundsWeightedAveragePeriod	P30Y
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	702000000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	421000000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	900000000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	650000000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	552000000	USD
CY2019Q4	us-gaap	Deferred Finance Costs Noncurrent Net DeferredFinanceCostsNoncurrentNet	148000000	USD
CY2018Q4	us-gaap	Deferred Finance Costs Noncurrent Net DeferredFinanceCostsNoncurrentNet	126000000	USD
CY2016	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2017Q4	xel	Tax Cutsand Jobs Actof2017 Corporate Federal Tax Rate TaxCutsandJobsActof2017CorporateFederalTaxRate	0.21
CY2019	xel	Tax Cutsand Jobs Actof2017 Net Operating Loss Deduction Limitation Percentof Taxableincome TaxCutsandJobsActof2017NetOperatingLossDeductionLimitationPercentofTaxableincome	0.80
CY2017Q4	xel	Tax Cutsand Jobs Actof2017 Incomplete Accounting Changein Tax Rate Regulatory Liability Provisional Income Tax Expense Benefit Gross TaxCutsandJobsActof2017IncompleteAccountingChangeinTaxRateRegulatoryLiabilityProvisionalIncomeTaxExpenseBenefitGross	3800000000	USD
CY2017Q4	xel	Tax Cutsand Jobs Actof2017 Corporate Federal Tax Rate TaxCutsandJobsActof2017CorporateFederalTaxRate	0.21
CY2017Q4	us-gaap	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefit	23000000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	35000000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	28000000	USD
CY2019Q4	xel	Unrecognized Tax Benefits That Would Not Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldNotImpactEffectiveTaxRate	9000000	USD
CY2018Q4	xel	Unrecognized Tax Benefits That Would Not Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldNotImpactEffectiveTaxRate	9000000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	44000000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	37000000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	37000000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	39000000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	134000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	10000000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	9000000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	6000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions	4000000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions	4000000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions	4000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1000000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	2000000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	15000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	4000000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	105000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	5000000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	7000000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	44000000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	37000000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	39000000	USD
CY2019Q4	xel	Tax Benefits Associated With Nol And Tax Credit Carryforwards TaxBenefitsAssociatedWithNolAndTaxCreditCarryforwards	40000000	USD
CY2018Q4	xel	Tax Benefits Associated With Nol And Tax Credit Carryforwards TaxBenefitsAssociatedWithNolAndTaxCreditCarryforwards	35000000	USD
CY2019Q4	xel	Net Deferred Tax Liabilityassociatedwiththe Unrecognized Tax Benefit Amountsand Related No Lsand Tax Credit Carryforwards NetDeferredTaxLiabilityassociatedwiththeUnrecognizedTaxBenefitAmountsandRelatedNOLsandTaxCreditCarryforwards	-29000000	USD
CY2018Q4	xel	Net Deferred Tax Liabilityassociatedwiththe Unrecognized Tax Benefit Amountsand Related No Lsand Tax Credit Carryforwards NetDeferredTaxLiabilityassociatedwiththeUnrecognizedTaxBenefitAmountsandRelatedNOLsandTaxCreditCarryforwards	-24000000	USD
CY2019Q4	us-gaap	Decrease In Unrecognized Tax Benefits Is Reasonably Possible DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible	28000000	USD
CY2017	xel	Interest Expense Incomerelatedtounrecognizedtaxbenefits InterestExpenseIncomerelatedtounrecognizedtaxbenefits	3000000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.049
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.050
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.041
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.094
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.052
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.047
CY2019	xel	Effective Income Tax Rate Reconciliation Regulatory Differences Utility Plant Items EffectiveIncomeTaxRateReconciliationRegulatoryDifferencesUtilityPlantItems	0.058
CY2018	xel	Effective Income Tax Rate Reconciliation Regulatory Differences Utility Plant Items EffectiveIncomeTaxRateReconciliationRegulatoryDifferencesUtilityPlantItems	0.062
CY2017	xel	Effective Income Tax Rate Reconciliation Regulatory Differences Utility Plant Items EffectiveIncomeTaxRateReconciliationRegulatoryDifferencesUtilityPlantItems	0.008
CY2019	xel	Effective Income Tax Rate Reconciliation Other Regulatory Items Percent EffectiveIncomeTaxRateReconciliationOtherRegulatoryItemsPercent	0.017
CY2018	xel	Effective Income Tax Rate Reconciliation Other Regulatory Items Percent EffectiveIncomeTaxRateReconciliationOtherRegulatoryItemsPercent	0.017
CY2017	xel	Effective Income Tax Rate Reconciliation Other Regulatory Items Percent EffectiveIncomeTaxRateReconciliationOtherRegulatoryItemsPercent	0.010
CY2019	xel	Effective Income Tax Rate Reconciliation Change In Unrecognized Tax Benefits EffectiveIncomeTaxRateReconciliationChangeInUnrecognizedTaxBenefits	0.005
CY2018	xel	Effective Income Tax Rate Reconciliation Change In Unrecognized Tax Benefits EffectiveIncomeTaxRateReconciliationChangeInUnrecognizedTaxBenefits	0.004
CY2017	xel	Effective Income Tax Rate Reconciliation Change In Unrecognized Tax Benefits EffectiveIncomeTaxRateReconciliationChangeInUnrecognizedTaxBenefits	-0.006
CY2019	xel	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Changein Tax Rate Percent EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017ChangeinTaxRatePercent	0
CY2018	xel	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Changein Tax Rate Percent EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017ChangeinTaxRatePercent	0
CY2017	xel	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Changein Tax Rate Percent EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017ChangeinTaxRatePercent	0.014
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	0.010
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	0.007
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	0.013
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.085
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.126
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.321
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-16000000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-34000000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	1000000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	4000000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	8000000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-11000000	USD
CY2019	xel	Current Change In Unrecognized Tax Expense Benefit CurrentChangeInUnrecognizedTaxExpenseBenefit	2000000	USD
CY2018	xel	Current Change In Unrecognized Tax Expense Benefit CurrentChangeInUnrecognizedTaxExpenseBenefit	-6000000	USD
CY2017	xel	Current Change In Unrecognized Tax Expense Benefit CurrentChangeInUnrecognizedTaxExpenseBenefit	-83000000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	55000000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	122000000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	460000000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	83000000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	85000000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	107000000	USD
CY2019	xel	Deferred Change In Unrecognized Tax Expense Benefit DeferredChangeInUnrecognizedTaxExpenseBenefit	5000000	USD
CY2018	xel	Deferred Change In Unrecognized Tax Expense Benefit DeferredChangeInUnrecognizedTaxExpenseBenefit	11000000	USD
CY2017	xel	Deferred Change In Unrecognized Tax Expense Benefit DeferredChangeInUnrecognizedTaxExpenseBenefit	73000000	USD
CY2019	xel	Deferred Investment Tax Credits DeferredInvestmentTaxCredits	5000000	USD
CY2018	xel	Deferred Investment Tax Credits DeferredInvestmentTaxCredits	5000000	USD
CY2017	xel	Deferred Investment Tax Credits DeferredInvestmentTaxCredits	5000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	128000000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	181000000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	542000000	USD
CY2019	xel	Deferred Tax Expense Benefit Excluding Selected Items DeferredTaxExpenseBenefitExcludingSelectedItems	344000000	USD
CY2018	xel	Deferred Tax Expense Benefit Excluding Selected Items DeferredTaxExpenseBenefitExcludingSelectedItems	320000000	USD
CY2017	xel	Deferred Tax Expense Benefit Excluding Selected Items DeferredTaxExpenseBenefitExcludingSelectedItems	-2939000000	USD
CY2019	xel	Amortization And Adjustments To Deferred Income Taxes On Income Tax Regulatory Assets And Liabilities AmortizationAndAdjustmentsToDeferredIncomeTaxesOnIncomeTaxRegulatoryAssetsAndLiabilities	-206000000	USD
CY2018	xel	Amortization And Adjustments To Deferred Income Taxes On Income Tax Regulatory Assets And Liabilities AmortizationAndAdjustmentsToDeferredIncomeTaxesOnIncomeTaxRegulatoryAssetsAndLiabilities	-102000000	USD
CY2017	xel	Amortization And Adjustments To Deferred Income Taxes On Income Tax Regulatory Assets And Liabilities AmortizationAndAdjustmentsToDeferredIncomeTaxesOnIncomeTaxRegulatoryAssetsAndLiabilities	3583000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	5000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-4000000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	143000000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	218000000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	640000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	5474000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	5082000000	USD
CY2019Q4	xel	Deferred Tax Liabilities Operating Lease Asset DeferredTaxLiabilitiesOperatingLeaseAsset	449000000	USD
CY2018Q4	xel	Deferred Tax Liabilities Operating Lease Asset DeferredTaxLiabilitiesOperatingLeaseAsset	0	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets DeferredTaxLiabilitiesRegulatoryAssets	598000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets DeferredTaxLiabilitiesRegulatoryAssets	599000000	USD
CY2019Q4	xel	Deferred Tax Liabilities Compensationand Benefits Employee Benefits DeferredTaxLiabilitiesCompensationandBenefitsEmployeeBenefits	173000000	USD
CY2018Q4	xel	Deferred Tax Liabilities Compensationand Benefits Employee Benefits DeferredTaxLiabilitiesCompensationandBenefitsEmployeeBenefits	178000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	70000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	60000000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	6764000000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	5919000000	USD
CY2019Q4	xel	Deferred Tax Assets Regulatory Liabilities DeferredTaxAssetsRegulatoryLiabilities	847000000	USD
CY2018Q4	xel	Deferred Tax Assets Regulatory Liabilities DeferredTaxAssetsRegulatoryLiabilities	879000000	USD
CY2019Q4	xel	Deferred Tax Assets Operating Lease Liabilities DeferredTaxAssetsOperatingLeaseLiabilities	449000000	USD
CY2018Q4	xel	Deferred Tax Assets Operating Lease Liabilities DeferredTaxAssetsOperatingLeaseLiabilities	0	USD
CY2019Q4	xel	Deferred Tax Assets Tax Credit Carryforward DeferredTaxAssetsTaxCreditCarryforward	727000000	USD
CY2018Q4	xel	Deferred Tax Assets Tax Credit Carryforward DeferredTaxAssetsTaxCreditCarryforward	642000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	38000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	51000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	67000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	79000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	128000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	124000000	USD
CY2019Q4	xel	Deferred Tax Assets Deferred Investment Tax Credits DeferredTaxAssetsDeferredInvestmentTaxCredits	14000000	USD
CY2018Q4	xel	Deferred Tax Assets Deferred Investment Tax Credits DeferredTaxAssetsDeferredInvestmentTaxCredits	16000000	USD
CY2019Q4	xel	Deferred Tax Assets Rate Refund DeferredTaxAssetsRateRefund	26000000	USD
CY2018Q4	xel	Deferred Tax Assets Rate Refund DeferredTaxAssetsRateRefund	60000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	93000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	61000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	2255000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	1754000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	4509000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	4165000000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	483000	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	500000	shares
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	503000	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	49.67
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	47.60
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	41.02
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	464000	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	475000	shares
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	467000	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	29432000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	23393000	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	22459000	USD
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	939000	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	44.30
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	483000	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	49.67
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	116000	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	50.19
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	464000	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	41.09
CY2019	xel	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Dividend Equivalents In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsDividendEquivalentsInPeriod	38000	shares
CY2019	xel	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Dividend Equivalent In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsDividendEquivalentInPeriodWeightedAverageGrantDateFairValue	45.22
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	880000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	48.20
CY2019	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	1300000	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	500000	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	600000	shares
CY2019	us-gaap	Available For Sale Securities Gross Unrealized Gains AvailableForSaleSecuritiesGrossUnrealizedGains	706000000	USD
CY2019	xel	Numberof Utilitiesin Peer Group NumberofUtilitiesinPeerGroup	20	Parties
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	58000000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	45000000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	57000000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	15000000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	12000000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	22000000	USD
CY2019Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	40000000	USD
CY2018Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	38000000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y7M6D
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-58000000	USD
CY2018	us-gaap	Available For Sale Securities Gross Unrealized Gains AvailableForSaleSecuritiesGrossUnrealizedGains	450000000	USD
CY2019	us-gaap	Available For Sale Securities Gross Unrealized Loss AvailableForSaleSecuritiesGrossUnrealizedLoss	6000000	USD
CY2018	us-gaap	Available For Sale Securities Gross Unrealized Loss AvailableForSaleSecuritiesGrossUnrealizedLoss	45000000	USD
CY2019Q4	us-gaap	Equity Method Investments EquityMethodInvestments	155000000	USD
CY2019Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	136000000	USD
CY2018Q4	us-gaap	Equity Method Investments EquityMethodInvestments	141000000	USD
CY2018Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	121000000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	7000000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	111000000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	246000000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	158000000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	508000000	USD
CY2019Q4	us-gaap	Cash Flow Hedges Derivative Instruments At Fair Value Net CashFlowHedgesDerivativeInstrumentsAtFairValueNet	0	USD
CY2019	us-gaap	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths	0	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-60000000	USD
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-51000000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-23000000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-5000000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-3000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-3000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-3000000	USD
CY2019	xel	Tcja2017 Reclassificationfrom Aoc Ito Retained Earnings TCJA2017ReclassificationfromAOCItoRetainedEarnings	0	USD
CY2018	xel	Tcja2017 Reclassificationfrom Aoc Ito Retained Earnings TCJA2017ReclassificationfromAOCItoRetainedEarnings	0	USD
CY2017	xel	Tcja2017 Reclassificationfrom Aoc Ito Retained Earnings TCJA2017ReclassificationfromAOCItoRetainedEarnings	-10000000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-80000000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-60000000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-58000000	USD
CY2019Q4	us-gaap	Fair Value Hedges At Fair Value Net FairValueHedgesAtFairValueNet	0	USD
CY2019Q4	xel	Derivative Gross Liability Position Aggregate Fair Value DerivativeGrossLiabilityPositionAggregateFairValue	7000000	USD
CY2018Q4	xel	Derivative Gross Liability Position Aggregate Fair Value DerivativeGrossLiabilityPositionAggregateFairValue	0	USD
CY2019Q4	xel	Collateral Already Posted Adequate Assurance Clauses Aggregate Fair Value CollateralAlreadyPostedAdequateAssuranceClausesAggregateFairValue	0	USD
CY2019Q4	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	32000000	USD
CY2019Q4	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	11000000	USD
CY2018Q4	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	15000000	USD
CY2019Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	18109000000	USD
CY2019Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	20227000000	USD
CY2018Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	16209000000	USD
CY2018Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	16755000000	USD
CY2019	us-gaap	Defined Benefit Plan Settlements Plan Assets DefinedBenefitPlanSettlementsPlanAssets	20000000	USD
CY2018	us-gaap	Defined Benefit Plan Settlements Plan Assets DefinedBenefitPlanSettlementsPlanAssets	198000000	USD
CY2019	us-gaap	Other Postretirement Benefits Payments OtherPostretirementBenefitsPayments	15000000	USD
CY2018	us-gaap	Other Postretirement Benefits Payments OtherPostretirementBenefitsPayments	11000000	USD
CY2017	us-gaap	Other Postretirement Benefits Payments OtherPostretirementBenefitsPayments	20000000	USD
CY2018	xel	Postretirement Cash Balance Formula PostretirementCashBalanceFormula	0.05
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	39000000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	38000000	USD
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	37000000	USD
CY2018Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	2568000000	USD
CY2019	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	26000000	USD
CY2019	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	5000000	USD
CY2019	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	128000000	USD
CY2019	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	-16000000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	2701000000	USD
CY2017Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	2475000000	USD
CY2018	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	13000000	USD
CY2018	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	14000000	USD
CY2018	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	120000000	USD
CY2018	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	-26000000	USD
CY2018Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	2568000000	USD
CY2019Q4	xel	Percentage Of Total Obligation For Decommissioning Expected To Be Funded By External Funds PercentageOfTotalObligationForDecommissioningExpectedToBeFundedByExternalFunds	1
CY2019	xel	Assumed Annual Escalation Rate During Operations And Radiological Portion Of Decommissioning AssumedAnnualEscalationRateDuringOperationsAndRadiologicalPortionOfDecommissioning	0.0436
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	1037000000	USD
CY2019	xel	Assumed Annual Escalation Rate During Independent Fuel Storage Installation And Site Restoration Portion Of Decommissioning AssumedAnnualEscalationRateDuringIndependentFuelStorageInstallationAndSiteRestorationPortionOfDecommissioning	0.0336
CY2019Q4	xel	Estimated Decommissioning Cost Obligation From Most Recently Approved Study EstimatedDecommissioningCostObligationFromMostRecentlyApprovedStudy	3012000000	USD
CY2018Q4	xel	Estimated Decommissioning Cost Obligation From Most Recently Approved Study EstimatedDecommissioningCostObligationFromMostRecentlyApprovedStudy	3012000000	USD
CY2019Q4	xel	Effect Of Escalating Costs To Current Year Dollars EffectOfEscalatingCostsToCurrentYearDollars	688000000	USD
CY2018Q4	xel	Effect Of Escalating Costs To Current Year Dollars EffectOfEscalatingCostsToCurrentYearDollars	539000000	USD
CY2019Q4	xel	Estimated Decommissioning Cost Obligation In Current Dollars EstimatedDecommissioningCostObligationInCurrentDollars	3700000000	USD
CY2018Q4	xel	Estimated Decommissioning Cost Obligation In Current Dollars EstimatedDecommissioningCostObligationInCurrentDollars	3551000000	USD
CY2019Q4	xel	Effect Of Escalating Costs To Payment Date EffectOfEscalatingCostsToPaymentDate	7505000000	USD
CY2018Q4	xel	Effect Of Escalating Costs To Payment Date EffectOfEscalatingCostsToPaymentDate	7654000000	USD
CY2019Q4	xel	Estimated Future Decommissioning Costs Undiscounted EstimatedFutureDecommissioningCostsUndiscounted	11205000000	USD
CY2018Q4	xel	Estimated Future Decommissioning Costs Undiscounted EstimatedFutureDecommissioningCostsUndiscounted	11205000000	USD
CY2019Q4	xel	Effect Of Discounting Obligation Using Risk Free Interest Rate EffectOfDiscountingObligationUsingRiskFreeInterestRate	5562000000	USD
CY2018Q4	xel	Effect Of Discounting Obligation Using Risk Free Interest Rate EffectOfDiscountingObligationUsingRiskFreeInterestRate	6911000000	USD
CY2019Q4	xel	Discounted Decommissioning Cost Obligation DiscountedDecommissioningCostObligation	5643000000	USD
CY2018Q4	xel	Discounted Decommissioning Cost Obligation DiscountedDecommissioningCostObligation	4294000000	USD
CY2019Q4	xel	Discounted Decommissioning Obligation Compared To Assets Currently Held In Trust DiscountedDecommissioningObligationComparedToAssetsCurrentlyHeldInTrust	3203000000	USD
CY2018Q4	xel	Discounted Decommissioning Obligation Compared To Assets Currently Held In Trust DiscountedDecommissioningObligationComparedToAssetsCurrentlyHeldInTrust	2239000000	USD
CY2019	xel	Reconciliationof Decommissioning Cost Obligation Regulatoryto Gaap ReconciliationofDecommissioningCostObligationRegulatorytoGAAP	<div style="line-height:120%;padding-bottom:6px;text-align:justify;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:99.81785063752277%;border-collapse:collapse;text-align:left;"><tr><td colspan="9"/></tr><tr><td style="width:70%;"/><td style="width:1%;"/><td style="width:1%;"/><td style="width:12%;"/><td style="width:1%;"/><td style="width:1%;"/><td style="width:1%;"/><td style="width:12%;"/><td style="width:1%;"/></tr><tr><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:8pt;"><span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;">(Millions of Dollars)</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:8pt;"><span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;">2019</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:8pt;"><span style="font-family:Arial Narrow;font-size:8pt;font-weight:bold;">2018</span></div></td></tr><tr><td style="vertical-align:bottom;background-color:#e0e0e0;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:8pt;"><span style="font-family:Arial Narrow;font-size:8pt;">Discounted decommissioning cost obligation - regulated basis</span></div></td><td style="vertical-align:bottom;background-color:#e0e0e0;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#e0e0e0;border-top:1px solid #000000;"><div style="text-align:left;font-size:8pt;"><span style="font-family:Arial Narrow;font-size:8pt;">$</span></div></td><td style="vertical-align:bottom;background-color:#e0e0e0;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:8pt;"><span style="font-family:Arial Narrow;font-size:8pt;"><span>5,643</span></span></div></td><td style="vertical-align:bottom;background-color:#e0e0e0;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#e0e0e0;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#e0e0e0;border-top:1px solid #000000;"><div style="text-align:left;font-size:8pt;"><span style="font-family:Arial Narrow;font-size:8pt;">$</span></div></td><td style="vertical-align:bottom;background-color:#e0e0e0;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:8pt;"><span style="font-family:Arial Narrow;font-size:8pt;"><span>4,294</span></span></div></td><td style="vertical-align:bottom;background-color:#e0e0e0;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:8pt;"><span style="font-family:Arial Narrow;font-size:8pt;">Differences in discount rate and market risk premium</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:8pt;"><span style="font-family:Arial Narrow;font-size:8pt;"><span>(2,295</span></span></div></td><td style="vertical-align:bottom;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:8pt;"><span style="font-family:Arial Narrow;font-size:8pt;">)</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:8pt;"><span style="font-family:Arial Narrow;font-size:8pt;"><span>(1,447</span></span></div></td><td style="vertical-align:bottom;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:8pt;"><span style="font-family:Arial Narrow;font-size:8pt;">)</span></div></td></tr><tr><td style="vertical-align:bottom;background-color:#e0e0e0;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:8pt;"><span style="font-family:Arial Narrow;font-size:8pt;">O&M costs not included for GAAP</span></div></td><td style="vertical-align:bottom;background-color:#e0e0e0;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#e0e0e0;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:8pt;"><span style="font-family:Arial Narrow;font-size:8pt;"><span>(1,280</span></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#e0e0e0;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:8pt;"><span style="font-family:Arial Narrow;font-size:8pt;">)</span></div></td><td style="vertical-align:bottom;background-color:#e0e0e0;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#e0e0e0;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:8pt;"><span style="font-family:Arial Narrow;font-size:8pt;"><span>(879</span></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#e0e0e0;padding-right:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:8pt;"><span style="font-family:Arial Narrow;font-size:8pt;">)</span></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:8pt;"><span style="font-family:Arial Narrow;font-size:8pt;">Nuclear production decommissioning ARO - GAAP</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:8pt;"><span style="font-family:Arial Narrow;font-size:8pt;">$</span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:8pt;"><span style="font-family:Arial Narrow;font-size:8pt;"><span>2,068</span></span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:8pt;"><span style="font-family:Arial Narrow;font-size:8pt;">$</span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:8pt;"><span style="font-family:Arial Narrow;font-size:8pt;"><span>1,968</span></span></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr></table></div><span style="font-family:Arial Narrow;font-size:10pt;"><br/></span></div>
CY2019Q4	xel	Discounted Decommissioning Cost Obligation DiscountedDecommissioningCostObligation	5643000000	USD
CY2018Q4	xel	Discounted Decommissioning Cost Obligation DiscountedDecommissioningCostObligation	4294000000	USD
CY2019Q4	xel	Differencesin Discount Rateand Market Risk Premium DifferencesinDiscountRateandMarketRiskPremium	2295000000	USD
CY2018Q4	xel	Differencesin Discount Rateand Market Risk Premium DifferencesinDiscountRateandMarketRiskPremium	1447000000	USD
CY2019Q4	xel	Operatingand Maintenance Costs Not Includedfor Gaap OperatingandMaintenanceCostsNotIncludedforGAAP	1280000000	USD
CY2018Q4	xel	Operatingand Maintenance Costs Not Includedfor Gaap OperatingandMaintenanceCostsNotIncludedforGAAP	879000000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	220000000	USD
CY2019	xel	Nuclear Decommissioning Expense NuclearDecommissioningExpense	20000000	USD
CY2018	xel	Nuclear Decommissioning Expense NuclearDecommissioningExpense	20000000	USD
CY2017	xel	Nuclear Decommissioning Expense NuclearDecommissioningExpense	20000000	USD
CY2019	xel	Approvedannualaccrualfordecommissioningcosts Approvedannualaccrualfordecommissioningcosts	14000000	USD
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.041
CY2019Q4	xel	Operating Lease Rightof Use Asset Gross OperatingLeaseRightofUseAssetGross	1843000000	USD
CY2019Q4	xel	Operating Lease Rightof Use Asset Accumulated Depreciation OperatingLeaseRightofUseAssetAccumulatedDepreciation	171000000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1672000000	USD
CY2019Q4	xel	Finance Lease Rightof Use Asset Gross FinanceLeaseRightofUseAssetGross	222000000	USD
CY2018Q4	xel	Finance Lease Rightof Use Asset Gross FinanceLeaseRightofUseAssetGross	222000000	USD
CY2019Q4	xel	Finance Lease Rightof Use Asset Accumulated Depreciation FinanceLeaseRightofUseAssetAccumulatedDepreciation	83000000	USD
CY2018Q4	xel	Finance Lease Rightof Use Asset Accumulated Depreciation FinanceLeaseRightofUseAssetAccumulatedDepreciation	77000000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	139000000	USD
CY2018Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	145000000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	255000000	USD
CY2018	us-gaap	Operating Lease Cost OperatingLeaseCost	248000000	USD
CY2017	us-gaap	Operating Lease Cost OperatingLeaseCost	246000000	USD
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	6000000	USD
CY2018	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	6000000	USD
CY2017	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	5000000	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	19000000	USD
CY2018	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	19000000	USD
CY2017	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	20000000	USD
CY2019	xel	Finance Lease Cost FinanceLeaseCost	25000000	USD
CY2018	xel	Finance Lease Cost FinanceLeaseCost	25000000	USD
CY2017	xel	Finance Lease Cost FinanceLeaseCost	25000000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	5000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	262000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	14000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	267000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	14000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	253000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	12000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	239000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	12000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	230000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	12000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	865000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	207000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	2116000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	271000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	373000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	190000000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	1743000000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	81000000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	194000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	4000000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	1549000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	77000000	USD
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P9Y3M18D
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P37Y
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	239000000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	14000000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	234000000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	14000000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	235000000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	14000000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	221000000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	12000000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	208000000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	12000000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	286000000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	201000000	USD
CY2018Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	85000000	USD
CY2019Q4	xel	Assets Held As Collateral For Guarantor Obligations AssetsHeldAsCollateralForGuarantorObligations	0	USD
CY2019Q4	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	62000000	USD
CY2018Q4	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	69000000	USD
CY2019Q4	us-gaap	Equity Method Investments EquityMethodInvestments	155000000	USD
CY2018Q4	us-gaap	Equity Method Investments EquityMethodInvestments	141000000	USD
CY2019	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	11529000000	USD
CY2018	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	11537000000	USD
CY2017	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	11404000000	USD
CY2019	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	1765000000	USD
CY2018	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	1642000000	USD
CY2017	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	1479000000	USD
CY2019	us-gaap	Interest And Debt Expense InterestAndDebtExpense	736000000	USD
CY2018	us-gaap	Interest And Debt Expense InterestAndDebtExpense	652000000	USD
CY2017	us-gaap	Interest And Debt Expense InterestAndDebtExpense	628000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	128000000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	181000000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	542000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	1372000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	1261000000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	1148000000	USD
CY2019Q1	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	3141000000	USD
CY2019Q2	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	2577000000	USD
CY2019Q3	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	3013000000	USD
CY2019Q4	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	2798000000	USD
CY2019Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	486000000	USD
CY2019Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	410000000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	758000000	USD
CY2019Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	450000000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	315000000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	238000000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	527000000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	292000000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.61
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.46
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.02
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.56
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.61
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.46
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.01
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.56
CY2019Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.405
CY2019Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.405
CY2019Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.405
CY2019Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.405
CY2018Q1	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	2951000000	USD
CY2018Q2	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	2658000000	USD
CY2018Q3	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	3048000000	USD
CY2018Q4	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	2880000000	USD
CY2018Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	480000000	USD
CY2018Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	450000000	USD
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	696000000	USD
CY2018Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	339000000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	291000000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	265000000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	491000000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	214000000	USD
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.57
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.52
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.96
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.42
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.57
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.52
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.96
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.42
CY2018Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.380
CY2018Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.380
CY2018Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.380
CY2018Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.380
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	519000000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	511000000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	509000000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	520000000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	511000000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	509000000	shares
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.64
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.47
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.26
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.64
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.47
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.25
CY2019	xel	Expense Relatedto Revaluationof Federal Benefit Tcja ExpenseRelatedtoRevaluationofFederalBenefitTCJA	14000000	USD
CY2019	xel	Reduced Expense Relatedto Revaluationof Federal Benefits Tcja ReducedExpenseRelatedtoRevaluationofFederalBenefitsTCJA	4000000	USD

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$XEL
XCEL ENERGY INC Stock $xel

2019 Form 10-K Financial Statement

#000007290320000011 Filed on February 21, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$XEL XCEL ENERGY INC Stock $xel

2019 Form 10-K Financial Statement

#000007290320000011 Filed on February 21, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$XEL
XCEL ENERGY INC Stock $xel