Segment Financial Information (Narrative) (Details)		12 Months Ended
Segment Financial Information (Narrative) (Details)	Jan. 01, 2026	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Statement [Line Items]
Number of Reportable Segments		4
Subsequent Event, Description	2026 Business RealignmentOn January 1, 2026, the Company realigned certain businesses to respond to changes in the markets it serves and the opportunities that are emerging as the health system evolves. Optum Financial, including Optum Bank, which was historically included in Optum Health will now be included in Optum Insight. The Company’s reportable segments will remain unchanged, with prior period segment financial information being recast to conform to the 2026 presentation, beginning with the Company’s Quarterly Report on Form 10-Q for the three months ended March 31, 2026 filed with the SEC.
Revenues [Member] \| CMS [Member] \| Revenue Benchmark
Statement [Line Items]
Concentration Risk, Percentage		44.00%	40.00%	40.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.