v3.26.1
Basis of Presentation (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Nature of Operations
UnitedHealth Group Incorporated (individually and together with its subsidiaries, “UnitedHealth Group” and the “Company”) is a health care and well-being company with a mission to help people live healthier lives and help make the health system work better for everyone. The Company’s two distinct, yet complementary businesses — Optum and UnitedHealthcare — are working to help build a modern, high-performing health system through improved access, affordability, outcomes and experiences for the individuals and organizations the Company is privileged to serve.
   
Accounts Receivable, after Allowance for Credit Loss, Current $ 26,587   $ 23,018
Revenue, Remaining Performance Obligation, Amount $ 11,000    
Revenue, Remaining Performance Obligation, Percentage 50.00%    
Uncommitted Receivables Financing Facility $ 3,300    
Receivables sold under receivables financing facility 585    
Uncommitted Receivables Facility, Amount Collected but Not Remitted 245   1,000
Gain On Portfolio Actions 230    
Investment and other income 1,131 $ 1,033  
Medical costs 73,489 73,411  
Amount remitted to financial institutions 2,000    
Amount collected in 2026 related to receivables sold in 2025 1,000    
Operating costs 15,390 $ 13,594  
United Health Foundation contribution      
Restructuring Costs 400    
Loss contract reserves      
Restructuring Costs 137    
Net valuation gains on equity securities      
Restructuring Costs 59    
Restructuring and other actions      
Investment and other income 74    
Medical costs 137    
Operating costs 415    
Optum Insight      
Gain On Portfolio Actions 528    
Restructuring Costs 339    
Optum Rx      
Gain On Portfolio Actions 8    
Optum Health      
Restructuring Costs 135    
Loss On Portfolio Actions $ 306    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-04-01      
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 3 years    
unh:ProductsandservicesMember      
Accounts Receivable, after Allowance for Credit Loss, Current $ 9,300   $ 9,700