Accrued Expenses and Other Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Payables and Accruals [Abstract]
Accrued incentive compensation	$ 312	$ 298
Accrued compensation and benefits	174	77
Lease liability	62	47
Deferred revenue	127	80
Reserve for policy cancellations	100	73
Accrued interest	33	27
Accrued rent and vendor expenses	19	19
Other	48	32
Total	$ 875	$ 653