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v3.25.1

Supplemental Financial Information - Supplemental Cash Flow Information (Details) - USD ($) $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024 | Dec. 31, 2023
Depreciation, amortization, and accretion |  |  |  |
Property, plant, and equipment | $ 243 | $ 300 |  |
Amortization of intangible assets, net | 5 | 6 |  |
Nuclear fuel | 232 | 216 |  |
ARO accretion | 158 | 167 |  |
Total depreciation, amortization, and accretion | 640 | 694 |  |
Other non-cash operating activities |  |  |  |
Other decommissioning related-activity | (74) | (161) |  |
Energy-related options | (10) | 27 |  |
Pension and non-pension postretirement benefit costs | 38 | 28 |  |
Other | 93 | 65 |  |
Total other non-cash operating activities | 47 | (41) |  |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract] |  |  |  |
Cash and cash equivalents | 1,846 | 562 | $ 3,022 |
Restricted cash and cash equivalents | 96 | 83 | 107 |
Total cash, restricted cash, and cash equivalents | 1,942 | 645 | 3,129 | $ 454
Constellation Energy Generation, LLC |  |  |  |
Depreciation, amortization, and accretion |  |  |  |
Total depreciation, amortization, and accretion | 640 | 694 |  |
Other non-cash operating activities |  |  |  |
Other decommissioning related-activity | (74) | (161) |  |
Energy-related options | (10) | 27 |  |
Pension and non-pension postretirement benefit costs | 38 | 28 |  |
Other | 70 | 44 |  |
Total other non-cash operating activities | 24 | (62) |  |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract] |  |  |  |
Cash and cash equivalents | 1,836 | 557 | 3,018 |
Restricted cash and cash equivalents | 86 | 67 | 97 |
Total cash, restricted cash, and cash equivalents | 1,922 | 624 | $ 3,115 | $ 440
Unamortized Energy Contracts |  |  |  |
Depreciation, amortization, and accretion |  |  |  |
Amortization of energy contract assets and liabilities | $ 2 | $ 5 |  |

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- Definition This item represents realized and unrealized gains (losses) for the period as a result of selling and holding marketable securities in nuclear decommissioning trust funds. Additionally, this item includes the elimination of operating revenues, asset retirement obligation accretion, asset retirement cost amortization, investment income and income taxes related to nuclear decommissioning trust fund activity. As a result of certain regulatory agreements for these nuclear decommissioning trust funds; upon completion of decommissioning activities, excess (shortfall of) funds will be refunded to (recovered from) rate payers through a regulated affiliate. Therefore, this activity is contractually eliminated within the income statement. + References No definition available. + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 40 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482640/350-30-55-40 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482686/350-30-45-2 + Details
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