v3.25.0.1
Acquisitions, Divestitures and Asset Sales - Narrative (Details)
$ / shares in Units, member in Thousands, $ in Millions
1 Months Ended 3 Months Ended 8 Months Ended 9 Months Ended 12 Months Ended
Dec. 10, 2024
USD ($)
May 09, 2024
USD ($)
Jun. 02, 2023
USD ($)
May 01, 2023
USD ($)
Feb. 21, 2023
USD ($)
Feb. 28, 2023
USD ($)
Nov. 30, 2022
USD ($)
Jun. 30, 2022
USD ($)
Mar. 31, 2023
USD ($)
Mar. 31, 2022
USD ($)
member
Dec. 31, 2023
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
May 02, 2023
USD ($)
$ / shares
Mar. 29, 2023
USD ($)
$ / shares
May 31, 2022
member
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                                    
Proceeds from debt $ 3,000 $ 5,000 $ 4,900 $ 5,000 $ 6,000 $ 6,000                        
Intangible asset amortization since acquisition date                         $ 2,025 $ 1,905 $ 1,785      
Stock-based compensation expense since acquisition date                         540 588 447      
Loss on assets held for sale                         0 349 2,533      
Gain on sale of subsidiaries                         0 0 475      
Disposal Group, Disposed of by Sale, Not Discontinued Operations | International Health Care Renewal Rights                                    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                                    
Number of international health care members, renewal rights sold | member                                   200
Health Care Benefits | Disposal Group, Disposed of by Sale, Not Discontinued Operations | bswift LLC                                    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                                    
Proceeds from divestiture of subsidiary             $ 735                      
Gain on sale of subsidiaries                             250      
Health Care Benefits | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Payflex                                    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                                    
Proceeds from divestiture of subsidiary               $ 775                    
Gain on sale of subsidiaries                             225      
Health Care Benefits | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Thailand Business                                    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                                    
Loss on assets held for sale                   $ 41                
Number of medical members | member                   266                
Pharmacy & Consumer Wellness | Disposal Group, Held-for-sale, Not Discontinued Operations | Omnicare Long-Term Care Business                                    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                                    
Loss on assets held for sale                 $ 349           $ 2,500      
Oak Street Health Inc.                                    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                                    
Percentage of voting interests acquired                               100.00%    
Cash to be received by shareholders in acquisition (in dollars per share) | $ / shares                               $ 39.00    
Net deferred tax liabilities                               $ 796    
Revenue since acquisition date                     $ 2,100              
Operating income (losses) since acquisition date                     (520)              
Intangible asset amortization since acquisition date                     193              
Stock-based compensation expense since acquisition date                     $ 71   60          
Transaction costs                           77        
Signify Health, Inc.                                    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                                    
Percentage of voting interests acquired                                 100.00%  
Cash to be received by shareholders in acquisition (in dollars per share) | $ / shares                                 $ 30.50  
Net deferred tax liabilities                                 $ 259  
Revenue since acquisition date                       $ 797            
Operating income (losses) since acquisition date                       123            
Intangible asset amortization since acquisition date                       106            
Stock-based compensation expense since acquisition date                       $ 72 $ 41          
Goodwill deductible for income tax purposes                                 $ 1,700  
Transaction costs                           $ 37