$EXC
EXELON CORP Stock $exc

$exc Overview Financials Valuation SEC Filings Company Website

2017 Q3 Form 10-Q Financial Statement

#000162828017010625 Filed on November 02, 2017

Income Statement

Concept	2017 Q3	2017 Q2	2016 Q4
Revenue	$8.768B	$7.665B	$7.875B
YoY Change	-2.6%	10.93%	17.5%
Cost Of Revenue	$3.256B	$2.803B	$3.178B
YoY Change	-13.27%	14.22%	10.58%
Gross Profit	$5.512B	$4.862B	$4.702B
YoY Change	5.03%	9.11%	22.86%
Gross Profit Margin	62.86%	63.43%	59.71%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$1.408B	$1.317B	$1.567B
YoY Change	-12.71%	-1.2%	235.55%
% of Gross Profit	25.54%	27.09%	33.33%
Operating Expenses	$4.012B	$4.563B	$3.800B
YoY Change	0.75%	18.83%	21.52%
Operating Profit	$1.499B	$300.0M	$714.0M
YoY Change	18.31%	-53.63%	0.99%
Interest Expense	$377.0M	$426.0M	-$357.0M
YoY Change	-25.49%	16.39%	28.42%
% of Operating Profit	25.15%	142.0%	-50.0%
Other Income/Expense, Net	-$176.0M	-$259.0M	-$80.00M
YoY Change	-55.56%	11.64%	-160.15%
Pretax Income	$1.323B	$41.00M	$376.0M
YoY Change	51.89%	-90.12%	-33.21%
Income Tax	$451.0M	-$62.00M	$128.0M
% Of Pretax Income	34.09%	-151.22%	34.04%
Net Earnings	$865.0M	$94.00M	$191.0M
YoY Change	64.45%	-69.28%	-38.19%
Net Earnings / Revenue	9.87%	1.23%	2.43%
Basic Earnings Per Share	$0.86	$0.10	$0.22
Diluted Earnings Per Share	$0.85	$0.10	$0.22
COMMON SHARES
Basic Shares Outstanding	962.0M shares	934.0M shares	925.0M shares
Diluted Shares Outstanding	965.0M shares	936.0M shares	928.0M shares

Balance Sheet

Concept	2017 Q3	2017 Q2	2016 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$2.453B	$1.786B	$1.885B
YoY Change	29.31%	8.44%	-71.01%
Cash & Equivalents	$1.203B	$536.0M	$635.0M
Short-Term Investments	$1.250B	$1.250B	$1.250B
Other Short-Term Assets	$1.435B	$1.600B	$930.0M
YoY Change	34.87%	45.32%	23.67%
Inventory	$1.668B	$1.601B	$1.638B
Prepaid Expenses
Receivables	$3.854B	$3.825B	$4.158B
Other Receivables	$950.0M	$958.0M	$1.201B
Total Short-Term Assets	$12.72B	$12.23B	$12.41B
YoY Change	4.23%	6.41%	-19.06%
LONG-TERM ASSETS
Property, Plant & Equipment	$73.07B	$72.75B	$71.56B
YoY Change	2.6%	2.91%	24.58%
Goodwill	$6.677B	$6.677B	$6.677B
YoY Change	0.07%	-0.28%	149.89%
Intangibles
YoY Change
Long-Term Investments	$634.0M	$638.0M	$629.0M
YoY Change	7.09%	27.09%	-1.56%
Other Assets	$1.277B	$1.265B	$1.472B
YoY Change	-13.36%	-7.39%	1.87%
Total Long-Term Assets	$105.7B	$104.9B	$102.5B
YoY Change	3.34%	3.54%	28.03%
TOTAL ASSETS
Total Short-Term Assets	$12.72B	$12.23B	$12.41B
Total Long-Term Assets	$105.7B	$104.9B	$102.5B
Total Assets	$118.5B	$117.1B	$114.9B
YoY Change	3.44%	3.84%	20.46%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$3.132B	$3.134B	$3.441B
YoY Change	2.89%	10.9%	19.35%
Accrued Expenses	$3.080B	$2.878B	$3.460B
YoY Change	-4.82%	4.39%	45.62%
Deferred Revenue
YoY Change
Short-Term Debt	$710.0M	$1.757B	$1.267B
YoY Change	25.22%	84.75%	137.71%
Long-Term Debt Due	$3.164B	$3.619B	$2.430B
YoY Change	25.96%	34.39%	62.0%
Total Short-Term Liabilities	$12.40B	$13.97B	$13.46B
YoY Change	1.95%	17.41%	47.59%
LONG-TERM LIABILITIES
Long-Term Debt	$31.70B	$30.32B	$31.58B
YoY Change	-1.95%	-3.89%	33.54%
Other Long-Term Liabilities	$1.899B	$1.828B	$1.827B
YoY Change	-1.5%	-2.56%	22.54%
Total Long-Term Liabilities	$33.60B	$32.14B	$33.40B
YoY Change	-1.92%	-3.81%	32.89%
TOTAL LIABILITIES
Total Short-Term Liabilities	$12.40B	$13.97B	$13.46B
Total Long-Term Liabilities	$33.60B	$32.14B	$33.40B
Total Liabilities	$88.16B	$87.81B	$87.29B
YoY Change	1.27%	2.76%	28.25%
SHAREHOLDERS EQUITY
Retained Earnings	$11.95B	$11.44B	$12.03B
YoY Change	-1.41%	-4.06%	-0.31%
Common Stock	$18.86B	$18.86B	$18.79B
YoY Change	0.57%	0.74%	0.63%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$123.0M	$2.300B	$2.327B
YoY Change	-94.65%	15.0%	0.0%
Treasury Stock Shares	2.000M shares	2.000M shares	35.00M shares
Shareholders Equity	$28.10B	$27.55B	$25.84B
YoY Change
Total Liabilities & Shareholders Equity	$118.5B	$117.1B	$114.9B
YoY Change	3.44%	3.84%	20.46%

Cashflow Statement

Concept	2017 Q3	2017 Q2	2016 Q4
OPERATING ACTIVITIES
Net Income	$865.0M	$94.00M	$191.0M
YoY Change	64.45%	-69.28%	-38.19%
Depreciation, Depletion And Amortization	$1.408B	$1.317B	$1.567B
YoY Change	-12.71%	-1.2%	235.55%
Cash From Operating Activities	$2.778B	$1.821B	$1.098B
YoY Change	-1.14%	-40.88%	-43.46%
INVESTING ACTIVITIES
Capital Expenditures	-$1.711B	-$1.836B	-$2.185B
YoY Change	-8.94%	-19.72%	0.18%
Acquisitions
YoY Change
Other Investing Activities	-$51.00M	$138.0M	-$46.00M
YoY Change	-88.98%	-428.57%	-195.83%
Cash From Investing Activities	-$1.762B	-$1.698B	-$2.231B
YoY Change	-24.77%	-27.09%	4.59%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-282.0M	-201.0M	-60.00M
YoY Change	29.36%	214.06%	-89.51%
NET CHANGE
Cash From Operating Activities	2.778B	1.821B	1.098B
Cash From Investing Activities	-1.762B	-1.698B	-2.231B
Cash From Financing Activities	-282.0M	-201.0M	-60.00M
Net Change In Cash	734.0M	-78.00M	-1.193B
YoY Change	193.6%	-111.35%	56.36%
FREE CASH FLOW
Cash From Operating Activities	$2.778B	$1.821B	$1.098B
Capital Expenditures	-$1.711B	-$1.836B	-$2.185B
Free Cash Flow	$4.489B	$3.657B	$3.283B
YoY Change	-4.27%	-31.86%	-20.37%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2017
	dei	Document Period End Date DocumentPeriodEndDate	2017-09-30
	dei	Document Type DocumentType	10-Q
	dei	Entity Central Index Key EntityCentralIndexKey	0001109357
CY2017Q3	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	960852473	shares
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Registrant Name EntityRegistrantName	EXELON CORP
	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
	exc	Amortization Of Debt Fair Value Adjustment AmortizationOfDebtFairValueAdjustment	-9000000	USD
	exc	Amortization Of Debt Fair Value Adjustment AmortizationOfDebtFairValueAdjustment	-13000000	USD
	exc	Amortization Of Regulatory Asset Debt Costs AmortizationOfRegulatoryAssetDebtCosts	7000000	USD
	exc	Amortization Of Regulatory Asset Debt Costs AmortizationOfRegulatoryAssetDebtCosts	7000000	USD
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	exc	Amortization Rate Stabilization Deferral AmortizationRateStabilizationDeferral	62000000	USD
	exc	Amortization Rate Stabilization Deferral AmortizationRateStabilizationDeferral	-7000000	USD
	exc	Business Acquisition Residualcommitment BusinessAcquisitionResidualcommitment	55	MW
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	exc	Changes In Option Premiums Collected Received ChangesInOptionPremiumsCollectedReceived	24000000	USD
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	exc	Effective Income Tax Rate Reconciliation Penalties EffectiveIncomeTaxRateReconciliationPenalties	0.023
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CY2017Q3	exc	Forward Gas Basis ForwardGasBasis	0.41	USD
CY2017Q3	exc	Forward Power Basis ForwardPowerBasis	2.93	USD
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CY2016Q4	exc	Investments In Nonconsolidated Variable Interest Entities InvestmentsInNonconsolidatedVariableInterestEntities	248000000	USD
CY2017Q3	exc	Investments In Nonconsolidated Variable Interest Entities InvestmentsInNonconsolidatedVariableInterestEntities	259000000	USD
CY2017Q3	exc	Letters Of Credit Posted LettersOfCreditPosted	12000000	USD
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CY2017Q3	exc	Number Of Variable Interest Entities Consolidated NumberOfVariableInterestEntitiesConsolidated	6	VIE
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CY2017Q3	exc	Number Of Variable Interest Entities Not Consolidated NumberOfVariableInterestEntitiesNotConsolidated	7	VIE
CY2016Q4	exc	Open Asbestos Related Personal Injury Claims OpenAsbestosRelatedPersonalInjuryClaims	227	Open_claim
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CY2016Q3	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	9002000000	USD
	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	24468000000	USD
CY2016	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	32342000000	USD
CY2016Q3	us-gaap	Business Combination Bargain Purchase Gain Recognized Amount BusinessCombinationBargainPurchaseGainRecognizedAmount	0	USD
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CY2017Q3	us-gaap	Business Combination Bargain Purchase Gain Recognized Amount BusinessCombinationBargainPurchaseGainRecognizedAmount	7000000	USD
	us-gaap	Business Combination Bargain Purchase Gain Recognized Amount BusinessCombinationBargainPurchaseGainRecognizedAmount	233000000	USD
CY2017Q3	us-gaap	Business Combination Contingent Consideration Liability Noncurrent BusinessCombinationContingentConsiderationLiabilityNoncurrent	0	USD
CY2016Q3	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	20000000	USD
	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	123000000	USD
CY2017Q3	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	-8000000	USD
	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	10000000	USD
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CY2016Q1	us-gaap	Capital Leases Net Investment In Direct Financing Leases Unguaranteed Residual Values Of Leased Property CapitalLeasesNetInvestmentInDirectFinancingLeasesUnguaranteedResidualValuesOfLeasedProperty	356000000	USD
CY2016Q3	us-gaap	Capitalized Costs Asset Retirement Costs CapitalizedCostsAssetRetirementCosts	476000000	USD
CY2017Q3	us-gaap	Capitalized Costs Asset Retirement Costs CapitalizedCostsAssetRetirementCosts	-141000000	USD
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CY2016Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1897000000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	635000000	USD
CY2017Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1203000000	USD
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CY2016Q4	us-gaap	Commercial Paper CommercialPaper	688000000	USD
CY2017Q3	us-gaap	Commercial Paper CommercialPaper	118000000	USD
CY2014Q2	us-gaap	Commitments And Contingencies CommitmentsAndContingencies	1000000000	USD
CY2016Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2017Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2016Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.32
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.95
CY2017Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.33
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.98
CY2016Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	2000000000	shares
CY2017Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	2000000000	shares
CY2016Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	922872373	shares
CY2017Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	960852473	shares
CY2016Q4	us-gaap	Common Stock Value CommonStockValue	18794000000	USD
CY2017Q3	us-gaap	Common Stock Value CommonStockValue	18862000000	USD
CY2016Q3	us-gaap	Competitive Energy Revenue CompetitiveEnergyRevenue	3823000000	USD
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CY2017Q3	us-gaap	Competitive Energy Revenue CompetitiveEnergyRevenue	3747000000	USD
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CY2016Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	531000000	USD
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CY2017Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	868000000	USD
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CY2016Q3	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	31000000	USD
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CY2017Q3	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	43000000	USD
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CY2016Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	562000000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1052000000	USD
CY2017Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	911000000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1980000000	USD
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CY2016Q3	us-gaap	Cost Of Goods And Services Energy Commodities And Services CostOfGoodsAndServicesEnergyCommoditiesAndServices	2584000000	USD
	us-gaap	Cost Of Goods And Services Energy Commodities And Services CostOfGoodsAndServicesEnergyCommoditiesAndServices	6599000000	USD
CY2017Q3	us-gaap	Cost Of Goods And Services Energy Commodities And Services CostOfGoodsAndServicesEnergyCommoditiesAndServices	2316000000	USD
	us-gaap	Cost Of Goods And Services Energy Commodities And Services CostOfGoodsAndServicesEnergyCommoditiesAndServices	7268000000	USD
CY2016Q3	us-gaap	Cost Of Purchased Power CostOfPurchasedPower	1170000000	USD
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CY2017Q3	us-gaap	Cost Of Purchased Power CostOfPurchasedPower	1226000000	USD
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CY2016Q3	us-gaap	Costs And Expenses CostsAndExpenses	7736000000	USD
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CY2017Q3	us-gaap	Costs And Expenses CostsAndExpenses	7300000000	USD
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CY2016Q4	us-gaap	Decommissioning Fund Investments DecommissioningFundInvestments	11061000000	USD
CY2017Q3	us-gaap	Decommissioning Fund Investments DecommissioningFundInvestments	12966000000	USD
CY2016Q4	us-gaap	Decommissioning Liability Noncurrent DecommissioningLiabilityNoncurrent	14000000	USD
CY2017Q3	us-gaap	Decommissioning Liability Noncurrent DecommissioningLiabilityNoncurrent	0	USD
CY2016Q4	us-gaap	Deferred Credits And Other Liabilities DeferredCreditsAndOtherLiabilities	41619000000	USD
CY2017Q3	us-gaap	Deferred Credits And Other Liabilities DeferredCreditsAndOtherLiabilities	43671000000	USD
CY2016Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	200000000	USD
CY2017Q3	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	196000000	USD
CY2016Q4	us-gaap	Deferred Income Taxes And Other Tax Liabilities Noncurrent DeferredIncomeTaxesAndOtherTaxLiabilitiesNoncurrent	18138000000	USD
CY2017Q3	us-gaap	Deferred Income Taxes And Other Tax Liabilities Noncurrent DeferredIncomeTaxesAndOtherTaxLiabilitiesNoncurrent	19250000000	USD
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CY2016Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	4248000000	USD
CY2017Q3	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	4055000000	USD
CY2017Q1	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesAfterTax	59000000	USD
CY2016Q3	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	51000000	USD
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CY2017Q3	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	34000000	USD
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CY2016Q4	us-gaap	Derivative Asset Notional Amount DerivativeAssetNotionalAmount	933000000	USD
CY2017Q3	us-gaap	Derivative Asset Notional Amount DerivativeAssetNotionalAmount	885000000	USD
CY2016Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	917000000	USD
CY2017Q3	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	699000000	USD
CY2016Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	492000000	USD
CY2017Q3	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	426000000	USD
CY2016Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	29000000	USD
CY2017Q3	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	75000000	USD
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CY2016Q4	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Asset At Fair Value DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue	2000000	USD
CY2017Q3	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Asset At Fair Value DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue	0	USD
CY2016Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	282000000	USD
CY2017Q3	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	178000000	USD
CY2016Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	392000000	USD
CY2017Q3	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	410000000	USD
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CY2016Q4	us-gaap	Due To Affiliate Current DueToAffiliateCurrent	8000000	USD
CY2017Q3	us-gaap	Due To Affiliate Current DueToAffiliateCurrent	5000000	USD
CY2016Q4	us-gaap	Due To Related Parties Noncurrent DueToRelatedPartiesNoncurrent	641000000	USD
CY2017Q3	us-gaap	Due To Related Parties Noncurrent DueToRelatedPartiesNoncurrent	389000000	USD
CY2016Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.53
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CY2017Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.86
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CY2016Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.53
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CY2017Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.85
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CY2016Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.390
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CY2017Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.341
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CY2016Q3	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2017Q3	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2017Q3	us-gaap	Effective Income Tax Rate Reconciliation Deductions Other EffectiveIncomeTaxRateReconciliationDeductionsOther	-0.002
	us-gaap	Effective Income Tax Rate Reconciliation Deductions Other EffectiveIncomeTaxRateReconciliationDeductionsOther	-0.032
CY2016Q3	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.002
	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.005
CY2017Q3	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.005
	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.002
CY2016Q3	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.008
	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.018
CY2017Q3	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.001
	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.000
CY2016Q3	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	-0.030
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CY2017Q3	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	-0.026
	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	-0.034
CY2016Q3	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.038
	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.025
CY2017Q3	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.022
	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.007
CY2016Q3	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies Other EffectiveIncomeTaxRateReconciliationTaxContingenciesOther	-0.040
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CY2017Q3	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies Other EffectiveIncomeTaxRateReconciliationTaxContingenciesOther	-0.026
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CY2016Q3	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Investment EffectiveIncomeTaxRateReconciliationTaxCreditsInvestment	0.009
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CY2017Q3	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Investment EffectiveIncomeTaxRateReconciliationTaxCreditsInvestment	0.011
	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Investment EffectiveIncomeTaxRateReconciliationTaxCreditsInvestment	0.009
CY2016Q3	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Other EffectiveIncomeTaxRateReconciliationTaxCreditsOther	-0.029
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CY2017Q3	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Other EffectiveIncomeTaxRateReconciliationTaxCreditsOther	-0.022
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CY2016Q3	us-gaap	Effective Income Tax Rate Reconciliation Tax Settlements EffectiveIncomeTaxRateReconciliationTaxSettlements	-0.001
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CY2016Q3	us-gaap	Electric Utility Revenue ElectricUtilityRevenue	4330000000	USD
	us-gaap	Electric Utility Revenue ElectricUtilityRevenue	10461000000	USD
CY2017Q3	us-gaap	Electric Utility Revenue ElectricUtilityRevenue	4164000000	USD
	us-gaap	Electric Utility Revenue ElectricUtilityRevenue	11318000000	USD
CY2016Q3	us-gaap	Electrical Generation Revenue ElectricalGenerationRevenue	4535000000	USD
	us-gaap	Electrical Generation Revenue ElectricalGenerationRevenue	12243000000	USD
CY2017Q3	us-gaap	Electrical Generation Revenue ElectricalGenerationRevenue	4456000000	USD
	us-gaap	Electrical Generation Revenue ElectricalGenerationRevenue	12924000000	USD
CY2016Q4	us-gaap	Energy Marketing Accounts Payable EnergyMarketingAccountsPayable	428000000	USD
CY2017Q3	us-gaap	Energy Marketing Accounts Payable EnergyMarketingAccountsPayable	261000000	USD
CY2016Q4	us-gaap	Energy Marketing Contract Liabilities Current EnergyMarketingContractLiabilitiesCurrent	407000000	USD
CY2017Q3	us-gaap	Energy Marketing Contract Liabilities Current EnergyMarketingContractLiabilitiesCurrent	283000000	USD
CY2016Q4	us-gaap	Energy Marketing Contract Liabilities Noncurrent EnergyMarketingContractLiabilitiesNoncurrent	830000000	USD
CY2017Q3	us-gaap	Energy Marketing Contract Liabilities Noncurrent EnergyMarketingContractLiabilitiesNoncurrent	656000000	USD
CY2016Q4	us-gaap	Energy Marketing Contracts Assets Current EnergyMarketingContractsAssetsCurrent	88000000	USD
CY2017Q3	us-gaap	Energy Marketing Contracts Assets Current EnergyMarketingContractsAssetsCurrent	81000000	USD
CY2016Q4	us-gaap	Energy Marketing Contracts Assets Noncurrent EnergyMarketingContractsAssetsNoncurrent	447000000	USD
CY2017Q3	us-gaap	Energy Marketing Contracts Assets Noncurrent EnergyMarketingContractsAssetsNoncurrent	407000000	USD
CY2016Q4	us-gaap	Energy Related Inventory Other Fossil Fuel EnergyRelatedInventoryOtherFossilFuel	364000000	USD
CY2017Q3	us-gaap	Energy Related Inventory Other Fossil Fuel EnergyRelatedInventoryOtherFossilFuel	387000000	USD
	us-gaap	Extinguishment Of Debt Amount ExtinguishmentOfDebtAmount	11000000	USD
CY2017Q3	us-gaap	Fair Value Net Asset Liability FairValueNetAssetLiability	2400000000	USD
CY2015Q3	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	25000000	USD
CY2017Q3	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	25000000	USD
CY2017Q3	us-gaap	Forward Contract Indexed To Issuers Equity Settlement Alternatives Cash At Fair Value ForwardContractIndexedToIssuersEquitySettlementAlternativesCashAtFairValue	1150000000	USD
CY2016Q3	us-gaap	Gain Loss On Cash Flow Hedge Ineffectiveness Net GainLossOnCashFlowHedgeIneffectivenessNet	6000000	USD
	us-gaap	Gain Loss On Cash Flow Hedge Ineffectiveness Net GainLossOnCashFlowHedgeIneffectivenessNet	12000000	USD
CY2017Q3	us-gaap	Gain Loss On Cash Flow Hedge Ineffectiveness Net GainLossOnCashFlowHedgeIneffectivenessNet	4000000	USD
	us-gaap	Gain Loss On Cash Flow Hedge Ineffectiveness Net GainLossOnCashFlowHedgeIneffectivenessNet	11000000	USD
CY2016Q1	us-gaap	Gain Loss On Contract Termination GainLossOnContractTermination	4000000	USD
CY2016Q2	us-gaap	Gain Loss On Contract Termination GainLossOnContractTermination	36000000	USD
	us-gaap	Gain Loss On Investments GainLossOnInvestments	243000000	USD
	us-gaap	Gain Loss On Investments GainLossOnInvestments	429000000	USD
CY2016Q3	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	1000000	USD
	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	41000000	USD
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CY2016Q3	us-gaap	Gas Domestic Regulated Revenue GasDomesticRegulatedRevenue	137000000	USD
	us-gaap	Gas Domestic Regulated Revenue GasDomesticRegulatedRevenue	781000000	USD
CY2017Q3	us-gaap	Gas Domestic Regulated Revenue GasDomesticRegulatedRevenue	149000000	USD
	us-gaap	Gas Domestic Regulated Revenue GasDomesticRegulatedRevenue	906000000	USD
CY2016Q4	us-gaap	Goodwill Goodwill	6677000000	USD
CY2017Q3	us-gaap	Goodwill Goodwill	6677000000	USD
CY2017Q3	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	49000000	USD
	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	274000000	USD
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CY2016Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	871000000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1597000000	USD
CY2017Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1326000000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	2531000000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-15000000	USD
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CY2016Q3	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-5000000	USD
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CY2016Q3	us-gaap	Income Tax Examination Penalties And Interest Expense IncomeTaxExaminationPenaltiesAndInterestExpense	-106000000	USD
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CY2016Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	340000000	USD
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CY2017Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	452000000	USD
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	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	296000000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-593000000	USD
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	527000000	USD
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	167000000	USD
CY2017Q3	us-gaap	Increase Decrease In Asset Retirement Obligations IncreaseDecreaseInAssetRetirementObligations	27000000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-21000000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	87000000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	537000000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	547000000	USD
CY2017Q1	us-gaap	Increase Decrease In Pension Plan Obligations IncreaseDecreaseInPensionPlanObligations	92000000	USD
CY2017Q1	us-gaap	Increase Decrease In Postretirement Obligations IncreaseDecreaseInPostretirementObligations	57000000	USD
	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	296000000	USD
	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-224000000	USD
	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	75000000	USD
	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	67000000	USD
CY2016Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2000000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2000000	shares
CY2017Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	3000000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2000000	shares
CY2016Q3	us-gaap	Interest Expense InterestExpense	506000000	USD
	us-gaap	Interest Expense InterestExpense	1148000000	USD
CY2017Q3	us-gaap	Interest Expense InterestExpense	377000000	USD
	us-gaap	Interest Expense InterestExpense	1165000000	USD
CY2016Q3	us-gaap	Interest Expense Related Party InterestExpenseRelatedParty	10000000	USD
	us-gaap	Interest Expense Related Party InterestExpenseRelatedParty	31000000	USD
CY2017Q3	us-gaap	Interest Expense Related Party InterestExpenseRelatedParty	9000000	USD
	us-gaap	Interest Expense Related Party InterestExpenseRelatedParty	29000000	USD
CY2016Q4	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	1274000000	USD
CY2017Q3	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	1281000000	USD
	us-gaap	Inventory Write Down InventoryWriteDown	74000000	USD
	us-gaap	Inventory Write Down InventoryWriteDown	52000000	USD
CY2016Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	2000000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	14000000	USD
CY2017Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	2000000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	6000000	USD
CY2016Q4	us-gaap	Liabilities Liabilities	87292000000	USD
CY2017Q3	us-gaap	Liabilities Liabilities	88156000000	USD
CY2016Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	114904000000	USD
CY2017Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	118473000000	USD
CY2016Q4	us-gaap	Liabilities Current LiabilitiesCurrent	13457000000	USD
CY2017Q3	us-gaap	Liabilities Current LiabilitiesCurrent	12395000000	USD
CY2016Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	2430000000	USD
CY2017Q3	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	3164000000	USD
CY2016Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	31575000000	USD
CY2017Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	31701000000	USD
CY2016Q4	us-gaap	Long Term Investments LongTermInvestments	629000000	USD
CY2017Q3	us-gaap	Long Term Investments LongTermInvestments	634000000	USD
	us-gaap	Loss Contingency Loss In Period LossContingencyLossInPeriod	50000000	USD
CY2016Q4	us-gaap	Margin Deposit Assets MarginDepositAssets	158000000	USD
CY2017Q3	us-gaap	Margin Deposit Assets MarginDepositAssets	-27000000	USD
CY2016Q4	us-gaap	Minority Interest MinorityInterest	1775000000	USD
CY2017Q3	us-gaap	Minority Interest MinorityInterest	2217000000	USD
	us-gaap	Minority Interest Period Increase Decrease MinorityInterestPeriodIncreaseDecrease	-11000000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1251000000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	701000000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-13219000000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-5810000000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	7363000000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	5677000000	USD
CY2016Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	490000000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	930000000	USD
CY2017Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	824000000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1899000000	USD
	us-gaap	Noncash Merger Related Costs NoncashMergerRelatedCosts	508000000	USD
	us-gaap	Noncash Merger Related Costs NoncashMergerRelatedCosts	0	USD
	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	84000000	USD
	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	16000000	USD
	us-gaap	Noncontrolling Interest Increase From Sale Of Parent Equity Interest NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest	407000000	USD
CY2016Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-396000000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-802000000	USD
CY2017Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-149000000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-469000000	USD
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	12	Reportable_segment
CY2016Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	1267000000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	2399000000	USD
CY2017Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	1475000000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	3000000000	USD
CY2016Q4	us-gaap	Other Assets Current OtherAssetsCurrent	930000000	USD
CY2017Q3	us-gaap	Other Assets Current OtherAssetsCurrent	1435000000	USD
CY2016Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	1472000000	USD
CY2017Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	1277000000	USD
CY2017Q3	us-gaap	Other Commitment OtherCommitment	2879000000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	2000000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	8000000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	4000000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	7000000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-12000000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-35000000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-14000000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-42000000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	1000000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	2000000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	36000000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	96000000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	44000000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	69000000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	3000000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-3000000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	55000000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-47000000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-140000000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-49000000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-147000000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-23000000	USD
	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-60000000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-22000000	USD
	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-74000000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	3000000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-4000000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	5000000	USD
CY2016Q3	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	1195000000	USD
	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	2821000000	USD
CY2017Q3	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	1002000000	USD
	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	2814000000	USD
CY2016Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	981000000	USD
CY2017Q3	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	933000000	USD
CY2016Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1827000000	USD
CY2017Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1899000000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-1224000000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-603000000	USD
CY2016Q3	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	7000000	USD
	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	16000000	USD
CY2017Q3	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	6000000	USD
	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	22000000	USD
CY2016Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	120000000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	377000000	USD
CY2017Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	237000000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	725000000	USD
CY2016Q3	us-gaap	Other Operating Income OtherOperatingIncome	386000000	USD
	us-gaap	Other Operating Income OtherOperatingIncome	169000000	USD
CY2017Q3	us-gaap	Other Operating Income OtherOperatingIncome	249000000	USD
	us-gaap	Other Operating Income OtherOperatingIncome	520000000	USD
CY2016Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	1848000000	USD
CY2017Q3	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	1977000000	USD
CY2016Q4	us-gaap	Other Receivables OtherReceivables	1201000000	USD
CY2017Q3	us-gaap	Other Receivables OtherReceivables	950000000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	110000000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	2000000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	873000000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	921000000	USD
	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	6896000000	USD
	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	208000000	USD
	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	8093000000	USD
	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	7044000000	USD
CY2016	us-gaap	Payments To Acquire Other Receivables PaymentsToAcquireOtherReceivables	313000000	USD
	us-gaap	Payments To Acquire Other Receivables PaymentsToAcquireOtherReceivables	312000000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	6368000000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	5556000000	USD
	us-gaap	Pension And Other Postretirement Benefit Contributions PensionAndOtherPostretirementBenefitContributions	283000000	USD
	us-gaap	Pension And Other Postretirement Benefit Contributions PensionAndOtherPostretirementBenefitContributions	344000000	USD
CY2016Q3	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	161000000	USD
	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	458000000	USD
CY2017Q3	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	161000000	USD
	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	482000000	USD
CY2016Q4	us-gaap	Prepaid Taxes PrepaidTaxes	1250000000	USD
CY2017Q3	us-gaap	Prepaid Taxes PrepaidTaxes	1250000000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1150000000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	4488000000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	2616000000	USD
CY2016Q1	us-gaap	Proceeds From Long Term Capital Lease Obligations ProceedsFromLongTermCapitalLeaseObligations	360000000	USD
	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	396000000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	35000000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-64000000	USD
	us-gaap	Proceeds From Repayments Of Other Long Term Debt ProceedsFromRepaymentsOfOtherLongTermDebt	-30000000	USD
	us-gaap	Proceeds From Repayments Of Other Long Term Debt ProceedsFromRepaymentsOfOtherLongTermDebt	0	USD
	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess	-1014000000	USD
	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess	-570000000	USD
	us-gaap	Proceeds From Repurchase Of Redeemable Preferred Stock ProceedsFromRepurchaseOfRedeemablePreferredStock	-190000000	USD
	us-gaap	Proceeds From Repurchase Of Redeemable Preferred Stock ProceedsFromRepurchaseOfRedeemablePreferredStock	0	USD
	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	7914000000	USD
	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	6848000000	USD
	us-gaap	Proceeds From Sale Of Property Held For Sale ProceedsFromSaleOfPropertyHeldForSale	49000000	USD
	us-gaap	Proceeds From Sale Of Property Held For Sale ProceedsFromSaleOfPropertyHeldForSale	219000000	USD
	us-gaap	Proceeds From Short Term Debt Maturing In More Than Three Months ProceedsFromShortTermDebtMaturingInMoreThanThreeMonths	195000000	USD
	us-gaap	Proceeds From Short Term Debt Maturing In More Than Three Months ProceedsFromShortTermDebtMaturingInMoreThanThreeMonths	621000000	USD
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	36000000	USD
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	61000000	USD
CY2016Q3	us-gaap	Profit Loss ProfitLoss	526000000	USD
	us-gaap	Profit Loss ProfitLoss	956000000	USD
CY2017Q3	us-gaap	Profit Loss ProfitLoss	867000000	USD
	us-gaap	Profit Loss ProfitLoss	1911000000	USD
CY2016Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	71555000000	USD
CY2017Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	73067000000	USD
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	107000000	USD
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	103000000	USD
CY2016Q3	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	19000000	USD
	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	43000000	USD
CY2017Q3	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	17000000	USD
	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	51000000	USD
CY2016Q4	us-gaap	Public Utilities Amount Of Allowance For Earnings On Equity Capitalized For Rate Making Purposes PublicUtilitiesAmountOfAllowanceForEarningsOnEquityCapitalizedForRateMakingPurposes	72000000	USD
CY2017Q3	us-gaap	Public Utilities Amount Of Allowance For Earnings On Equity Capitalized For Rate Making Purposes PublicUtilitiesAmountOfAllowanceForEarningsOnEquityCapitalizedForRateMakingPurposes	71000000	USD
CY2016Q3	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-42000000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-114000000	USD
CY2017Q3	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-34000000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-108000000	USD
CY2016Q3	us-gaap	Regulated Operating Revenue RegulatedOperatingRevenue	4467000000	USD
	us-gaap	Regulated Operating Revenue RegulatedOperatingRevenue	11243000000	USD
CY2017Q3	us-gaap	Regulated Operating Revenue RegulatedOperatingRevenue	4313000000	USD
	us-gaap	Regulated Operating Revenue RegulatedOperatingRevenue	12225000000	USD
CY2016Q4	us-gaap	Regulatory Assets RegulatoryAssets	11388000000	USD
CY2017Q3	us-gaap	Regulatory Assets RegulatoryAssets	11502000000	USD
CY2016Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	1342000000	USD
CY2017Q3	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	1264000000	USD
CY2016Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	10046000000	USD
CY2017Q3	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	10238000000	USD
CY2016Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	4789000000	USD
CY2017Q3	us-gaap	Regulatory Liabilities RegulatoryLiabilities	5102000000	USD
CY2016Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	602000000	USD
CY2017Q3	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	553000000	USD
CY2016Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	4187000000	USD
CY2017Q3	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	4549000000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	944000000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1728000000	USD
	us-gaap	Repayments Of Related Party Debt RepaymentsOfRelatedPartyDebt	250000000	USD
	us-gaap	Repayments Of Short Term Debt Maturing In More Than Three Months RepaymentsOfShortTermDebtMaturingInMoreThanThreeMonths	452000000	USD
	us-gaap	Repayments Of Short Term Debt Maturing In More Than Three Months RepaymentsOfShortTermDebtMaturingInMoreThanThreeMonths	610000000	USD
CY2016Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	253000000	USD
CY2017Q3	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	320000000	USD
	us-gaap	Restructuring Costs RestructuringCosts	130000000	USD
	us-gaap	Restructuring Costs RestructuringCosts	33000000	USD
CY2016Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	12030000000	USD
CY2017Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	11950000000	USD
CY2016Q3	us-gaap	Revenue From Purchased Oil And Gas RevenueFromPurchasedOilAndGas	326000000	USD
	us-gaap	Revenue From Purchased Oil And Gas RevenueFromPurchasedOilAndGas	1515000000	USD
CY2017Q3	us-gaap	Revenue From Purchased Oil And Gas RevenueFromPurchasedOilAndGas	460000000	USD
	us-gaap	Revenue From Purchased Oil And Gas RevenueFromPurchasedOilAndGas	1807000000	USD
CY2016Q3	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	1000000	USD
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	us-gaap	Description Of New Accounting Pronouncements Not Yet Adopted DescriptionOfNewAccountingPronouncementsNotYetAdopted	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:12px;padding-top:12px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;font-weight:bold;">New Accounting Standards (All Registrants)</font></div><div style="line-height:120%;padding-bottom:12px;padding-top:12px;text-align:justify;text-indent:32px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;font-style:italic;font-weight:bold;">New Accounting Standards Issued and Not Yet Adopted: </font><font style="font-family:Arial;font-size:10pt;">The following new authoritative accounting guidance issued by the FASB has not yet been adopted and reflected by the Registrants in their consolidated financial statements. Unless otherwise indicated, the Registrants are currently assessing the impacts such guidance may have (which could be material) on their Consolidated Balance Sheets, Consolidated Statements of Operations and Comprehensive Income, Consolidated Statements of Cash Flows and disclosures, as well as the potential to early adopt where applicable. The Registrants have assessed other FASB issuances of new standards which are not listed below given the current expectation such standards will not significantly impact the Registrants' financial reporting.</font></div><div style="line-height:120%;padding-bottom:12px;padding-top:12px;text-align:justify;text-indent:32px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;font-style:italic;">Revenue from Contracts with Customers (Issued May 2014 and subsequently amended to address implementation questions):</font><font style="font-family:Arial;font-size:10pt;"> Changes the criteria for recognizing revenue from a contract with a customer. The new revenue recognition guidance, including subsequent amendments, is effective for annual reporting periods beginning on or after December 15, 2017, with the option to early adopt the standard for annual periods beginning on or after December 15, 2016. Exelon has not early adopted this standard.</font></div><div style="line-height:120%;padding-bottom:12px;padding-top:12px;text-align:justify;text-indent:32px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">The new standard replaces existing guidance on revenue recognition, including most industry specific guidance, with a five step model for recognizing and measuring revenue from contracts with customers. The objective of the new standard is to provide a single, comprehensive revenue recognition model for all contracts with customers to improve comparability within industries, across industries, and across capital markets. The underlying principle is that an entity will recognize revenue to depict the transfer of goods or services to customers at an amount that the entity expects to be entitled to in exchange for those goods or services. The guidance also requires a number of disclosures regarding the nature, amount, timing, and uncertainty of revenue and the related cash flows. The guidance can be applied retrospectively to each prior reporting period presented (full retrospective method) or retrospectively with a cumulative effect adjustment to retained earnings for initial application of the guidance at the date of initial adoption (modified retrospective method).</font></div><div style="line-height:120%;padding-bottom:12px;padding-top:12px;text-align:justify;text-indent:30px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">The Registrants have assessed the revenue recognition standard and are executing a detailed implementation plan in preparation for adoption on January 1, 2018. The Registrants have also actively participated in the AICPA Power and Utilities Industry Task Force (Industry Task Force) process to identify implementation issues and support the development of related implementation guidance. In coordination with the Industry Task Force, the Registrants have reached conclusions on the following key accounting issues:</font></div><table cellpadding="0" cellspacing="0" style="padding-top:12px;padding-bottom:12px;font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:24px;"><font style="font-family:Arial;font-size:10pt;">•</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">The Utility Registrants’ tariff sale contracts, including those with lower credit quality customers, are generally deemed to be probable of collection under the guidance and, thus, the timing of revenue recognition will continue to be concurrent with the delivery of electricity or natural gas, consistent with current practice;</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="padding-top:12px;padding-bottom:12px;font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:24px;"><font style="font-family:Arial;font-size:10pt;">•</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">Consistent with current industry practice, revenues recognized from sales of bundled energy commodities (i.e., contracts involving the delivery of multiple energy commodities such as electricity, capacity, ancillary services, etc.) are generally expected to be recognized upon delivery to the customer in an amount based on the invoice price given that it corresponds directly with the value of the commodities transferred to the customer; and</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="padding-top:12px;padding-bottom:12px;font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:24px;"><font style="font-family:Arial;font-size:10pt;">•</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">Contributions in aid of construction are outside of the scope of the standard and, therefore, will continue to be accounted for as a reduction to Property, Plant, and Equipment.</font></div></td></tr></table><div style="line-height:120%;padding-bottom:12px;padding-top:12px;text-align:justify;text-indent:30px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">The Registrants have also completed the following key activities in their implementation plan:</font></div><table cellpadding="0" cellspacing="0" style="padding-top:12px;padding-bottom:12px;font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:24px;"><font style="font-family:Arial;font-size:10pt;">•</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">Evaluated existing contracts and revenue streams for potential changes in revenue recognition under the new guidance.  Based on these assessments, the Registrants have identified the following items that will be accounted for differently under the new revenue guidance as compared to current guidance:</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="padding-top:12px;padding-bottom:12px;font-family:Times New Roman; font-size:10pt;"><tr><td style="width:96px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:72px;"><font style="font-family:Arial;font-size:10pt;">•</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">Costs to acquire certain contracts (e.g., sales commissions associated with retail power contracts) will be deferred and amortized ratably over the term of the contract rather than being expensed as incurred; and</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="padding-top:12px;padding-bottom:12px;font-family:Times New Roman; font-size:10pt;"><tr><td style="width:96px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:72px;"><font style="font-family:Arial;font-size:10pt;">•</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">Variable consideration within certain contracts (e.g., performance bonuses) will be estimated and recognized as revenue over the term of the contract rather than being recognized when realized</font></div></td></tr></table><div style="line-height:120%;padding-bottom:12px;padding-top:12px;text-align:justify;padding-left:48px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">Notwithstanding these identified changes, Exelon does not expect the new guidance will have a material impact on the amount and timing of revenue recognition;</font></div><table cellpadding="0" cellspacing="0" style="padding-top:12px;padding-bottom:12px;font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:174%;font-size:10pt;padding-left:24px;"><font style="font-family:Arial;font-size:10pt;">•</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:174%;text-align:justify;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">Currently expect to apply the new guidance using the full retrospective method; and</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="padding-top:12px;padding-bottom:12px;font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:24px;"><font style="font-family:Arial;font-size:10pt;">•</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">Generation expects to disclose disaggregated revenue by operating segment and further differentiation by major products (i.e., electric power and gas) and the Utility Registrants expect to disclose disaggregated revenue by major customer class (i.e., residential and commercial & industrial) separately for electric and gas in the Combined Notes to Consolidated Financial Statements.</font></div></td></tr></table><div style="line-height:120%;padding-bottom:12px;padding-top:12px;text-align:justify;text-indent:30px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;font-style:italic;">Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost (Issued March 2017): </font><font style="font-family:Arial;font-size:10pt;">The new standard will require significant changes to the accounting and presentation of pension and OPEB costs at the plan sponsor (i.e., Exelon) level. This guidance requires plan sponsors to report the service cost and other non-service cost components of net periodic pension cost and net periodic OPEB cost (together, net benefit cost) separately. Under current GAAP, net benefit cost is recorded as part of income from operations and the components are disclosed in the Retirement Benefits footnote. Service cost will be presented as part of income from operations and the other non-service cost components will be classified outside of income from operations on the Consolidated Statements of Operations and Comprehensive Income. Additionally, service cost is the only component eligible for capitalization (whereas under current GAAP, all components of net benefit cost are eligible for capitalization).</font></div><div style="line-height:120%;padding-bottom:12px;padding-top:12px;text-align:justify;text-indent:30px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">Generation, ComEd, PECO, BGE, BSC, PHI, Pepco, DPL, ACE and PHISCO participate in Exelon’s single employer pension and OPEB plans and apply multi-employer accounting. Multi-employer accounting is not impacted by this standard, so Exelon's subsidiary financial statements will not change. On Exelon’s consolidated financial statements, non-service cost components of pension and OPEB cost capitalizable under a regulatory framework will be reported as regulatory assets (currently, they are capitalizable under pension and OPEB accounting guidance and reported as PP&E). These regulatory assets will be amortized outside of operating income.</font></div><div style="line-height:120%;padding-bottom:12px;padding-top:12px;text-align:justify;text-indent:30px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">The standard is effective January 1, 2018 and requires retrospective application for the presentation of the service cost component and the other non-service cost components of net benefit cost and prospective application for the capitalization of only the service cost component of net benefit cost. Exelon will not early adopt this standard.</font></div><div style="line-height:120%;padding-bottom:12px;padding-top:12px;text-align:justify;text-indent:30px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;font-style:italic;">Leases (Issued February 2016):</font><font style="font-family:Arial;font-size:10pt;"> Increases transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. The guidance requires lessees to recognize both the right-of-use assets and lease liabilities in the balance sheet for most leases, whereas today only financing type lease liabilities (capital leases) are recognized in the balance sheet. This is expected to require significant changes to systems, processes and procedures in order to recognize and measure leases recorded on the balance sheet that are currently classified as operating leases. In addition, the definition of a lease has been revised in regards to when an arrangement conveys the right to control the use of the identified asset under the arrangement which may result in changes to the classification of an arrangement as a lease. The recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee have not significantly changed from current GAAP. The accounting applied by a lessor is largely unchanged from that applied under current GAAP. The standard is effective January 1, 2019. Early adoption is permitted, however the Registrants do not expect to early adopt the standard. Lessees and lessors are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. Refer to Note </font><font style="font-family:Arial;font-size:10pt;">24</font><font style="font-family:Arial;font-size:10pt;"> — </font><font style="font-family:Arial;font-size:10pt;">Commitments and Contingencies</font><font style="font-family:Arial;font-size:10pt;"> of the Combined Notes to the Consolidated Financial Statements in the Exelon </font><font style="font-family:Arial;font-size:10pt;">2016</font><font style="font-family:Arial;font-size:10pt;"> Form 10-K for additional information regarding operating leases.</font></div><div style="line-height:120%;padding-bottom:12px;padding-top:12px;text-align:justify;text-indent:32px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;font-style:italic;">Impairment of Financial Instruments (Issued June 2016):</font><font style="font-family:Arial;font-size:10pt;font-style:italic;font-weight:bold;"> </font><font style="font-family:Arial;font-size:10pt;">Provides for a new Current Expected Credit Loss (CECL) impairment model for specified financial instruments including loans, trade receivables, debt securities classified as held-to-maturity investments and net investments in leases recognized by a lessor. Under the new guidance, on initial recognition and at each reporting period, an entity is required to recognize an allowance that reflects the entity’s current estimate of credit losses expected to be incurred over the life of the financial instrument. The standard does not make changes to the existing impairment models for non-financial assets such as fixed assets, intangibles and goodwill. The standard will be effective January 1, 2020 (with early adoption as of January 1, 2019 permitted) and, for most debt instruments, requires a modified retrospective transition approach through a cumulative-effect adjustment to retained earnings as of the beginning of the period of adoption.</font></div><div style="line-height:120%;text-align:justify;text-indent:30px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;font-style:italic;">Derivatives and Hedging (Issued September 2017): </font><font style="font-family:Arial;font-size:10pt;">Allows more financial and nonfinancial hedging strategies to be eligible for hedge accounting.  The amendments are intended to more closely align hedge accounting with companies’ risk management strategies, simplify the application of hedge accounting, and increase transparency as to the scope and results of hedging programs.  There are also amendments related to effectiveness testing and disclosure requirements.  The guidance is effective January 1, 2019 and early adoption is permitted with a modified retrospective transition approach. The Registrants are currently assessing this standard but do not currently expect a significant impact given the limited activity for which the Registrants elect hedge accounting and because the Registrants do not anticipate increasing their use of hedge accounting as a result of this standard.</font></div><div style="line-height:120%;padding-bottom:12px;padding-top:12px;text-align:justify;text-indent:32px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;font-style:italic;">Goodwill Impairment (Issued January 2017):</font><font style="font-family:Arial;font-size:10pt;"> Simplifies the accounting for goodwill impairment by removing Step 2 of the current test, which requires calculation of a hypothetical purchase price allocation. Under the revised guidance, goodwill impairment will be measured as the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill (currently Step 1 of the two step impairment test). Entities will continue to have the option to perform a qualitative assessment to determine if a quantitative impairment test is necessary. Exelon, Generation, ComEd, PHI, and DPL have goodwill as of </font><font style="font-family:Arial;font-size:10pt;">September 30, 2017</font><font style="font-family:Arial;font-size:10pt;">. This updated guidance is not currently expected to impact the Registrants’ financial reporting. The standard is effective January 1, 2020, with early adoption permitted, and must be applied on a prospective basis. </font></div><div style="line-height:120%;padding-bottom:12px;padding-top:12px;text-align:justify;text-indent:32px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;font-style:italic;">Clarifying the Definition of a Business (Issued January 2017): </font><font style="font-family:Arial;font-size:10pt;">Clarifies the definition of a business with the objective of addressing whether acquisitions (or dispositions) should be accounted for as acquisitions/dispositions of assets or as acquisitions/dispositions of businesses. If substantially all the fair value of the assets acquired/disposed of is concentrated in a single identifiable asset or a group of similar identifiable assets, the set of transferred assets and activities is not a business. If the fair value of the assets acquired/disposed of is not concentrated in a single identifiable asset or a group of similar identifiable assets, then an entity must evaluate whether an input and a substantive process exist, which together significantly contribute to the ability to produce outputs. The standard also revises the definition of outputs to focus on goods and services to customers. The standard will likely result in more acquisitions being accounted for as asset acquisitions. The standard is effective January 1, 2018, with early adoption permitted, and must be applied on a prospective basis.  </font></div><div style="line-height:120%;padding-bottom:12px;padding-top:12px;text-align:justify;text-indent:32px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;font-style:italic;">Intra-Entity Transfers of Assets Other Than Inventory (Issued October 2016): </font><font style="font-family:Arial;font-size:10pt;">Requires entities to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs (current GAAP prohibits the recognition of current and deferred income taxes for an intra-entity asset transfer until the asset has been sold to an outside party). The standard is effective January 1, 2018 with early adoption permitted. The guidance requires a modified retrospective transition approach through a cumulative-effect adjustment to retained earnings as of the beginning of the period of adoption.</font></div><div style="line-height:120%;padding-bottom:12px;padding-top:12px;text-align:justify;text-indent:32px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;font-style:italic;">Statement of Cash Flows: Classification of Certain Cash Receipts and Cash Payments (Issued August 2016) and Restricted Cash (Issued November 2016): </font><font style="font-family:Arial;font-size:10pt;">In 2016, the FASB issued two standards impacting the Statement of Cash Flows. The first adds or clarifies guidance on the classification of certain cash receipts and payments on the statement of cash flows as follows: debt prepayment or extinguishment costs, settlement of zero-coupon bonds, contingent consideration payments made after a business combination, proceeds from the settlement of insurance claims, proceeds from the settlement of corporate-owned life insurance policies and bank-owned life insurance policies, distributions received from equity method investees, beneficial interest in securitization transactions, and the application of the predominance principle to separately identifiable cash flows. The second states that amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows (instead of being presented as cash flow activities). The Registrants will adopt both standards on January 1, 2018 on a retrospective basis. Adoption of the second standard will result in a change in presentation of restricted cash on the face of the Statement of Cash Flows; otherwise the Registrants do not expect that this guidance will have a significant impact on the Registrants’ Consolidated Statements of Cash Flows and disclosures.</font></div><div style="line-height:120%;padding-bottom:12px;padding-top:12px;text-align:justify;text-indent:32px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;font-style:italic;">Recognition and Measurement of Financial Assets and Financial Liabilities (Issued January 2016):</font><font style="font-family:Arial;font-size:10pt;"> (i) Requires all investments in equity securities, including other ownership interests such as partnerships, unincorporated joint ventures and limited liability companies, to be carried at fair value through net income, (ii) requires an incremental recognition and disclosure requirement related to the presentation of fair value changes of financial liabilities for which the fair value option has been elected, (iii) amends several disclosure requirements, including the methods and significant assumptions used to estimate fair value or a description of the changes in the methods and assumptions used to estimate fair value, and (iv) requires disclosure of the fair value of financial assets and liabilities measured at amortized cost at the amount that would be received to sell the asset or paid to transfer the liability. The standard is effective January 1, 2018 with early adoption permitted. The guidance requires a modified retrospective transition approach with a cumulative effect adjustment to retained earnings for initial application of the guidance at the date of adoption. The Registrants will not early adopt this standard. The Registrants do not expect that this guidance will have a significant impact on the Registrants' Consolidated Balance Sheets, Consolidated Statements of Operations and Comprehensive Income, and Consolidated Statements of Cash Flows.</font></div></div>

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$EXC
EXELON CORP Stock $exc

2017 Q3 Form 10-Q Financial Statement

#000162828017010625 Filed on November 02, 2017

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EXC EXELON CORP Stock $exc

2017 Q3 Form 10-Q Financial Statement

#000162828017010625 Filed on November 02, 2017

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EXC
EXELON CORP Stock $exc