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Debt - Schedule of Debt (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025	Aug. 31, 2023	Jul. 31, 2023
Debt Instrument [Line Items]
Total principal debt	$ 625	$ 625
Premium on bond issuance	1	1
Total debt premium	1	1
Less: bond issuance costs	(12)	(13)
Total debt	614	613
Secured Debt
Debt Instrument [Line Items]
Total principal debt	575	575
Unsecured Debt
Debt Instrument [Line Items]
Total principal debt	50	50
$575 million secured bond (Level 1) \| Secured Debt
Debt Instrument [Line Items]
Debt instrument, face amount	575		$ 75	$ 500
Total principal debt	575	575
Unsecured senior convertible bond \| Unsecured Debt
Debt Instrument [Line Items]
Total principal debt	$ 50	$ 50