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Acquisitions and Divestitures - Narrative (Details)
shares in Millions, $ in Millions
1 Months Ended 3 Months Ended 4 Months Ended
Dec. 31, 2023
USD ($)
Sep. 14, 2023
USD ($)
Sep. 05, 2023
USD ($)
trading_day
shares
Feb. 29, 2024
USD ($)
Mar. 31, 2024
USD ($)
Mar. 31, 2023
USD ($)
Dec. 31, 2023
USD ($)
Business Acquisition [Line Items]              
Proceeds from sale of Promissory Note         $ 75 $ 0  
Black Knight, Inc. | Term Loan              
Business Acquisition [Line Items]              
Debt instrument, face amount   $ 500          
Debt instrument, term   40 years          
Interest rate, stated percentage   7.00%          
Long-term debt $ 75 $ 235         $ 75
Fair value, option, changes in fair value, gain (loss) $ 160            
Proceeds from sale of Promissory Note       $ 75      
Optimal Blue | Black Knight, Inc.              
Business Acquisition [Line Items]              
Disposal group, including discontinued operation, consideration   $ 241          
Black Knight, Inc.              
Business Acquisition [Line Items]              
Percentage of voting interests acquired     100.00%        
Preliminary purchase price     $ 11,838        
Cash     $ 10,542        
Equity interests issued and issuable (in shares) | shares     10.9        
Business combination, common stock, consecutive trading days | trading_day     10        
Business combination, common stock, trading days prior to closing | trading_day     3        
Expected tax deductible amount     $ 186        
Revenue of acquiree since acquisition date             270
Business combination, pro forma information, operating expenses of acquire since acquisition date, actual             $ 288