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AERA MERGER - Schedule of Pro Forma Information (Details) - Aera - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Business Acquisition [Line Items]
Total operating revenue	$ 3,883	$ 4,838
Net income	$ 355	$ 721
EPS
Basic (in dollars per share)	$ 3.94	$ 7.93
Diluted (in dollars per share)	$ 3.85	$ 7.65

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- Definition

Business Acquisition, Pro Forma Earnings Per Share

+ References

No definition available.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (a)
-Publisher FASB
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The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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-Section 50
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-Subparagraph (h)(2)
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The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Section 50
-Paragraph 2
-Subparagraph (h)(2)
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-URI https://asc.fasb.org/1943274/2147479328/805-10-50-2

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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-SubTopic 10
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-Section 50
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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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