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Intangible Assets - Major Classes of Amortizable Intangible Assets (Detail) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Finite-Lived Intangible Assets [Line Items]    
Total $ 10,366 $ 10,684
Expiration Lists    
Finite-Lived Intangible Assets [Line Items]    
Amortizable intangible assets, gross 15,840 15,968
Accumulated amortization (5,556) (5,357)
Total 10,284 10,611
Non-Compete Agreements    
Finite-Lived Intangible Assets [Line Items]    
Amortizable intangible assets, gross 138 125
Accumulated amortization (102) (98)
Total 36 27
Trade Names    
Finite-Lived Intangible Assets [Line Items]    
Amortizable intangible assets, gross 103 160
Accumulated amortization (57) (114)
Total $ 46 $ 46