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Related Parties - Schedule of Selling, General and Administrative Costs (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Related Party Transaction [Line Items]
Total fees received	$ (11)	$ 0	$ 7	$ 6
AMIC | Related Party
Related Party Transaction [Line Items]
Total fees received	0	2	0	7
AMIC | Management fees | Related Party
Related Party Transaction [Line Items]
Total fees received	0	2	0	6
AMIC | Other technical support fees | Related Party
Related Party Transaction [Line Items]
Total fees received	$ 0	$ 0	$ 0	$ 1

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- Definition

Amount of income (expense) related to nonoperating activities, classified as other.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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