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Property, Plant and Equipment | 12 Months Ended
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Dec. 31, 2023
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment | Property, Plant and Equipment The Company's major classes of property, plant, and equipment were as follows:
| As of December 31, |  | Depreciable
(In millions) | 2023 |  | 2022 |  | Lives
Facilities and equipment | $ | 1,918 |  |  | $ | 1,727 |  |  | 1-40 years
Land and improvements | 256 |  |  | 263 |  |  |
Nuclear fuel | — |  |  | 271 |  |  | 5 years
Hardware and office equipment and furnishings | 732 |  |  | 712 |  |  | 2-10 years
Construction in progress | 152 |  |  | 197 |  |  |
Total property, plant, and equipment | 3,058 |  |  | 3,170 |  |  |
Accumulated depreciation | (1,295) |  |  | (1,478) |  |  |
Net property, plant, and equipment | $ | 1,763 |  |  | $ | 1,692 |  |  |
Depreciation expense of property, plant and equipment recorded during the years ended December 31, 2023, 2022 and 2021 was $257 million, $291 million and $384 million, respectively.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//360/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 6 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-7 + Details
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