Equity - Effects of the Transaction on the Consolidated Interim Balance (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Class Of Stock [Line Items]
Accrued liabilities	$ 26	$ (8)	$ (17)
Repurchases of Series A Preferred Stock	0	(580)	(7)
Payments for Additional Amounts for conversion of Series A Preferred Stock	0	$ (25)	$ 0
Series A Repurchase
Class Of Stock [Line Items]
Cash and cash equivalents	(580)
Accrued liabilities	0
Preferred Stock	0
Common Stock	0
Additional Paid-in capital	(366)
Retained earnings	(201)
Non-operating income, net (Note 6)	13
Repurchases of Series A Preferred Stock	(580)
Payments for Additional Amounts for conversion of Series A Preferred Stock	0
2023 Conversion
Class Of Stock [Line Items]
Cash and cash equivalents	(25)
Accrued liabilities	0
Preferred Stock	0
Common Stock	0
Additional Paid-in capital	0
Retained earnings	(25)
Non-operating income, net (Note 6)	0
Repurchases of Series A Preferred Stock	0
Payments for Additional Amounts for conversion of Series A Preferred Stock	(25)
Settlement of Accumulated Dividends
Class Of Stock [Line Items]
Cash and cash equivalents	0
Accrued liabilities	0
Preferred Stock	0
Common Stock	0
Additional Paid-in capital	209
Retained earnings	(209)
Non-operating income, net (Note 6)	0
Repurchases of Series A Preferred Stock	0
Payments for Additional Amounts for conversion of Series A Preferred Stock	0
Excise tax on Series A Repurchase
Class Of Stock [Line Items]
Cash and cash equivalents	0
Accrued liabilities	6
Preferred Stock	0
Common Stock	0
Additional Paid-in capital	0
Retained earnings	(6)
Non-operating income, net (Note 6)	0
Repurchases of Series A Preferred Stock	0
Payments for Additional Amounts for conversion of Series A Preferred Stock	0
Total
Class Of Stock [Line Items]
Cash and cash equivalents	(605)
Accrued liabilities	6
Preferred Stock	0
Common Stock	0
Additional Paid-in capital	(157)
Retained earnings	(441)
Non-operating income, net (Note 6)	13
Repurchases of Series A Preferred Stock	(580)
Payments for Additional Amounts for conversion of Series A Preferred Stock	$ (25)