Label	Element	Value
Baltimore Gas and Electric Company [Member] | Stride Program [Member]
Captial and OM estimates current year	exc_CapitalandOMestimatescurrentyear	$ 78
Regulatory Liabilities	us-gaap_RegulatoryLiabilities	1
Exelon Generation Co L L C [Member]
Allocation Of Tax Benefit From Members	exc_AllocationOfTaxBenefitFromMembers	55
Membership Interest [Member] | Exelon Generation Co L L C [Member]
Allocation Of Tax Benefit From Members	exc_AllocationOfTaxBenefitFromMembers	$ 55