Acquisitions - Summary of Net Assets Acquired (Detail) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of detailed information about business combination [Line Items]      
Cash and cash equivalents $ 0 $ 4  
Deferred revenue $ (874) (866) $ (833)
Business combinations [member]      
Disclosure of detailed information about business combination [Line Items]      
Cash and cash equivalents   4  
Trade receivables   4  
Prepaid expenses and other current assets   1  
Current assets   9  
Total assets   57  
Payables and accruals   (7)  
Deferred revenue   (6)  
Other financial liabilities   (2)  
Current liabilities   (15)  
Provisions and other non-current liabilities   (2)  
Deferred tax   (7)  
Total liabilities   (24)  
Net assets acquired   33  
Goodwill   133  
Total   166  
Business combinations [member] | Computer software [member]      
Disclosure of detailed information about business combination [Line Items]      
Identifiable intangible assets   25  
Business combinations [member] | Other identifiable intangible assets [member]      
Disclosure of detailed information about business combination [Line Items]      
Identifiable intangible assets   $ 23