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Investments - Available-for-Sale Investment Securities, Unrealized Gains and Losses (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 293	$ 286
Gross Unrealized Gain	2	1
Gross Unrealized Loss	0	(1)
Fair Value	295	286
Government and agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	80	86
Gross Unrealized Gain	0	0
Gross Unrealized Loss	0	0
Fair Value	80	86
Corporate securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	213	200
Gross Unrealized Gain	2	1
Gross Unrealized Loss	0	(1)
Fair Value	$ 215	$ 200

X

- Definition

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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