XML 425 R152.htm IDEA: XBRL DOCUMENT v3.22.0.1
Trade and other receivables - Summary of Trade and Other Receivables (Parenthetical) (Detail) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Trade and other receivables [abstract]    
Cost reimbursements $ 23 $ 26