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Acquisitions - Narrative (Details)
$ in Millions, $ in Millions
Apr. 30, 2025
USD ($)
Mar. 31, 2026
USD ($)
Dec. 31, 2025
USD ($)
Apr. 30, 2025
AUD ($)
Business Combination [Line Items]        
Goodwill   $ 3,107 $ 3,122  
Care TopCo Pty Ltd        
Business Combination [Line Items]        
Fair value of net assets acquired $ 301     $ 471
Goodwill $ 207      
Care TopCo Pty Ltd | Minimum        
Business Combination [Line Items]        
Useful life 5 years      
Care TopCo Pty Ltd | Maximum        
Business Combination [Line Items]        
Useful life 20 years