Restructuring - Restructuring Expenses Included in Consolidated Statements of Operations (Footnote) (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Restructuring Cost and Reserve [Line Items]
Operating lease right-of-use assets	$ 282	$ 216
Real Estate
Restructuring Cost and Reserve [Line Items]
Operating lease right-of-use assets			$ 4