v3.26.1
Segment and Geographical Area Information (Details) (Table 1)
$ in Millions
3 Months Ended
Mar. 31, 2026
USD ($)
segments
Mar. 31, 2025
USD ($)
Segment Reporting Information [Line Items]    
Consolidated revenue $ 644.8 $ 581.9
Number of Operating Segments | segments 7  
Number of Reportable Segments | segments 5  
Operating Segments    
Segment Reporting Information [Line Items]    
Consolidated revenue $ 585.4 530.1
Reportable Segment Profitability 209.2 174.6
Morningstar Data and Analytics Segment    
Segment Reporting Information [Line Items]    
Consolidated revenue 215.2 199.2
Compensation Expense, Excluding Cost of Good and Service Sold 68.6 57.7
Segment Reporting, Other Segment Item, Amount 55.6 54.4
Morningstar Data and Analytics Segment | Operating Segments    
Segment Reporting Information [Line Items]    
Reportable Segment Profitability 91.0 87.1
PitchBook Segment    
Segment Reporting Information [Line Items]    
Consolidated revenue 172.4 163.7
Compensation Expense, Excluding Cost of Good and Service Sold 79.4 76.1
Segment Reporting, Other Segment Item, Amount 41.4 35.3
PitchBook Segment | Operating Segments    
Segment Reporting Information [Line Items]    
Reportable Segment Profitability 51.6 52.3
Morningstar Credit Segment    
Segment Reporting Information [Line Items]    
Consolidated revenue 58.0 61.3
Compensation Expense, Excluding Cost of Good and Service Sold 24.9 30.2
Segment Reporting, Other Segment Item, Amount 27.5 31.9
Morningstar Credit Segment | Operating Segments    
Segment Reporting Information [Line Items]    
Reportable Segment Profitability 5.6 (0.8)
Morningstar Wealth Segment    
Segment Reporting Information [Line Items]    
Consolidated revenue 101.0 73.0
Compensation Expense, Excluding Cost of Good and Service Sold 44.4 38.5
Segment Reporting, Other Segment Item, Amount 15.4 13.1
Morningstar Wealth Segment | Operating Segments    
Segment Reporting Information [Line Items]    
Reportable Segment Profitability 41.2 21.4
Morningstar Retirement Segment    
Segment Reporting Information [Line Items]    
Consolidated revenue 38.8 32.9
Compensation Expense, Excluding Cost of Good and Service Sold 12.0 11.6
Segment Reporting, Other Segment Item, Amount 7.0 6.7
Morningstar Retirement Segment | Operating Segments    
Segment Reporting Information [Line Items]    
Reportable Segment Profitability 19.8 14.6
License-based    
Segment Reporting Information [Line Items]    
Consolidated revenue 444.9 418.0
License-based | Operating Segments    
Segment Reporting Information [Line Items]    
Consolidated revenue 406.1 385.2
License-based | Morningstar Data and Analytics Segment    
Segment Reporting Information [Line Items]    
Consolidated revenue 215.2 199.2
License-based | PitchBook Segment    
Segment Reporting Information [Line Items]    
Consolidated revenue 170.5 161.8
License-based | Morningstar Credit Segment    
Segment Reporting Information [Line Items]    
Consolidated revenue 14.2 19.1
License-based | Morningstar Wealth Segment    
Segment Reporting Information [Line Items]    
Consolidated revenue 5.8 4.6
License-based | Morningstar Retirement Segment    
Segment Reporting Information [Line Items]    
Consolidated revenue 0.4 0.5
Asset-based    
Segment Reporting Information [Line Items]    
Consolidated revenue 95.1 85.7
Asset-based | Operating Segments    
Segment Reporting Information [Line Items]    
Consolidated revenue 74.9 68.5
Asset-based | Morningstar Data and Analytics Segment    
Segment Reporting Information [Line Items]    
Consolidated revenue 0.0 0.0
Asset-based | PitchBook Segment    
Segment Reporting Information [Line Items]    
Consolidated revenue 0.0 0.0
Asset-based | Morningstar Credit Segment    
Segment Reporting Information [Line Items]    
Consolidated revenue 36.5 36.1
Asset-based | Morningstar Wealth Segment    
Segment Reporting Information [Line Items]    
Consolidated revenue 0.0 0.0
Asset-based | Morningstar Retirement Segment    
Segment Reporting Information [Line Items]    
Consolidated revenue 38.4 32.4
Transaction-based    
Segment Reporting Information [Line Items]    
Consolidated revenue 104.8 78.2
Transaction-based | Operating Segments    
Segment Reporting Information [Line Items]    
Consolidated revenue 104.4 76.4
Transaction-based | Morningstar Data and Analytics Segment    
Segment Reporting Information [Line Items]    
Consolidated revenue 0.0 0.0
Transaction-based | PitchBook Segment    
Segment Reporting Information [Line Items]    
Consolidated revenue 1.9 1.9
Transaction-based | Morningstar Credit Segment    
Segment Reporting Information [Line Items]    
Consolidated revenue 7.3 6.1
Transaction-based | Morningstar Wealth Segment    
Segment Reporting Information [Line Items]    
Consolidated revenue 95.2 68.4
Transaction-based | Morningstar Retirement Segment    
Segment Reporting Information [Line Items]    
Consolidated revenue $ 0.0 $ 0.0