v3.26.3
Trade Accounts Receivable, Unbilled Services and Unearned Income - Trade Accounts Receivable and Unbilled Services (Detail) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Receivables, Net, Current [Abstract]    
Trade accounts receivable $ 1,604 $ 1,668
Unbilled services 1,741 1,783
Trade accounts receivable and unbilled services 3,345 3,451
Allowance for doubtful accounts (52) (51)
Trade accounts receivable and unbilled services, net $ 3,293 $ 3,400