XML 64 R35.htm IDEA: XBRL DOCUMENT v3.25.1

Nuclear Decommissioning (Tables)

3 Months Ended

Mar. 31, 2025

Asset Retirement Obligation Disclosure [Abstract]

Asset Retirement Obligation

The following table provides a rollforward of the nuclear decommissioning AROs reflected in the Consolidated Balance Sheets from December 31, 2024 to March 31, 2025:

Balance as of December 31, 2024			$	12,186
Accretion expense			154
Net decrease due to changes in, and timing of, estimated future cash flows			(76)
Costs incurred related to decommissioning plants			(4)
Balance as of March 31, 2025			$	12,260

Related Party Transactions - Noncurrent Receivables from/Payables to affiliates

The following table presents our noncurrent payables to ComEd, PECO, CenterPoint, and AEP Texas reflected as Payables related to Regulatory Agreement Units in the Consolidated Balance Sheets as of March 31, 2025 and December 31, 2024:

			March 31, 2025						December 31, 2024
ComEd			$	3,798					$	3,780
PECO			312						247
CenterPoint			359						365
AEP Texas			124						126
Payables related to Regulatory Agreement Units			$	4,593					$	4,518

X

- Definition

Related Party Transactions - Noncurrent Receivables from/Payables to affiliates [Table Text Block]

+ References

No definition available.

+ Details

Name:	ceg_RelatedPartyTransactionsNoncurrentReceivablesfromPayablestoaffiliatesTableTextBlock
Namespace Prefix:	ceg_
Data Type:	dtr-types1:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_AssetRetirementObligationDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 410
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481850/410-20-50-1

+ Details

Name:	us-gaap_ScheduleOfChangeInAssetRetirementObligationTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration