Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Irish Income Tax Provision Tax Rate of 25%	$ (185)	$ (126)	$ (35)
Tax Provision on Operating Earnings/Losses Subject to Rates Different than the Irish Income Tax Rate	(75)	52	(155)
Tax (Provision) Benefit on Swiss Loss from internal liquidation of subsidiary and internal restructuring	0	48	(141)
Decrease (Increase) in Valuation Allowance attributed to Swiss Loss and internal restructuring	0	(46)	141
Decrease (Increase) in Valuation Allowance on Operating Earnings/Losses	81	35	64
Change in Uncertain Tax Positions	(10)	(20)	39
Income Tax Provision	$ (189)	$ (57)	$ (87)