v3.25.0.1
Goodwill and Other Intangibles - Intangible Assets (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Other Intangible Assets[Line Items]    
Indefinite-lived intangible assets, Trademarks $ 10,498 $ 10,498
Intangible assets, gross 44,271 44,166
Finite-lived intangible assets, accumulated amortization (16,948) (14,932)
Intangible assets, net $ 27,323 $ 29,234
Weighted Average Life (years) 14 years 6 months 14 years 6 months
Customer contracts/relationships and covenants not to compete    
Other Intangible Assets[Line Items]    
Finite-lived intangible assets, gross carrying amount $ 26,904 $ 26,784
Finite-lived intangible assets, accumulated amortization (13,889) (12,241)
Finite-lived intangible assets, net carrying amount $ 13,015 $ 14,543
Weighted Average Life (years) 14 years 2 months 12 days 14 years 2 months 12 days
Technology    
Other Intangible Assets[Line Items]    
Finite-lived intangible assets, gross carrying amount $ 1,250 $ 1,253
Finite-lived intangible assets, accumulated amortization (1,167) (1,104)
Finite-lived intangible assets, net carrying amount $ 83 $ 149
Weighted Average Life (years) 3 years 3 years
Provider networks    
Other Intangible Assets[Line Items]    
Finite-lived intangible assets, gross carrying amount $ 4,203 $ 4,203
Finite-lived intangible assets, accumulated amortization (1,282) (1,072)
Finite-lived intangible assets, net carrying amount $ 2,921 $ 3,131
Weighted Average Life (years) 20 years 20 years
Value of Business Acquired    
Other Intangible Assets[Line Items]    
Finite-lived intangible assets, gross carrying amount $ 590 $ 590
Finite-lived intangible assets, accumulated amortization (228) (201)
Finite-lived intangible assets, net carrying amount $ 362 $ 389
Weighted Average Life (years) 20 years 20 years
Other    
Other Intangible Assets[Line Items]    
Finite-lived intangible assets, gross carrying amount $ 826 $ 838
Finite-lived intangible assets, accumulated amortization (382) (314)
Finite-lived intangible assets, net carrying amount $ 444 $ 524
Weighted Average Life (years) 9 years 3 months 18 days 9 years 3 months 18 days