Fair Value Disclosures - Quantitative Information about Non-Recurring Level 3 Fair Value Measurements for Assets and Liabilities Measured on Our Consolidated Balance Sheets at Fair Value (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Assets:
Mortgage loans	$ 7,005	$ 2,413
Fair Value, Measurements, Nonrecurring
Assets:
Mortgage loans	617	1,777
Fair Value, Measurements, Nonrecurring | Level 3
Assets:
Mortgage loans	$ 508	$ 1,474