v3.26.3
Commitments and Contingencies (Details)
$ in Millions
9 Months Ended
Sep. 30, 2026
USD ($)
plantiff
Mar. 31, 2026
USD ($)
Dec. 31, 2025
USD ($)
Commitments and Contingencies [Line Items]      
Number of putative nationwide classes of plaintiffs | plantiff 2    
Self-funded receivables, net $ 6,277   $ 5,162
Long-Term Purchase Commitment, Period 5 years    
Maximum Transition Services Period 18 months    
Financial guarantees $ 786    
Unfunded loan commitments 301    
Technology Infrastructure and Related Management and Support Services      
Commitments and Contingencies [Line Items]      
Purchase Commitment, Remaining Minimum Amount Committed 1,295    
CMS Notice of Possible Sanction | Threatened Litigation      
Commitments and Contingencies [Line Items]      
Loss Contingency Accrual 593 $ 935  
Loss contingency accrual, payments 342    
Loss Contingency Accrual, Operating Expense 935    
CMS Notice of Possible Sanction | Minimum | Threatened Litigation      
Commitments and Contingencies [Line Items]      
Loss Contingency, Estimate of Possible Loss 320    
CMS Notice of Possible Sanction | Maximum | Threatened Litigation      
Commitments and Contingencies [Line Items]      
Loss Contingency, Estimate of Possible Loss 320    
Independent Dispute Resolution Matters      
Commitments and Contingencies [Line Items]      
Loss Contingency Accrual 669    
Loss Contingency, Estimate of Possible Loss 324    
Self-funded receivables, net 575    
Independent Dispute Resolution Matters | Fully Insured Arrangements      
Commitments and Contingencies [Line Items]      
Loss Contingency Accrual 44    
Independent Dispute Resolution Matters | Administrative Services Arrangements      
Commitments and Contingencies [Line Items]      
Loss Contingency Accrual $ 625    
Percentage of Potential Additional IDR Liabilities Related To ASOs 94.00%