v3.26.1
Nature of Operations and Summary of Significant Accounting Policies - Reconciliation of Cash (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Jun. 30, 2025
Dec. 31, 2024
Accounting Policies [Abstract]        
Cash and cash equivalents $ 569 $ 590 $ 816 $ 469
Cash and cash equivalents 0 0 0 2
Cash and cash equivalents $ 569 $ 590 $ 816 $ 471