v3.26.1
Debt and Credit Arrangements - Letters of Credit, Narrative (Details) - Line of Credit - Letters of Credit - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Debt Instrument [Line Items]    
Letters of credit outstanding $ 2,300 $ 1,900
Letters of credit outstanding that will reduce the available credit under facilities $ 324 $ 343