Deferred Revenue - Schedule of Changes in Deferred Revenue (Details) - USD ($) $ in Millions	12 Months Ended		16 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Sep. 05, 2023
Disaggregation Of Revenue [Roll Forward]
Deferred revenue, beginning balance	$ 307	$ 254
Additions	1,047	1,068
Amortization	(1,021)	(1,015)
Deferred revenue, ending balance	333	307	$ 333
Black Knight, Inc.
Disaggregation Of Revenue [Roll Forward]
Additions			37
Listing Revenues
Disaggregation Of Revenue [Roll Forward]
Deferred revenue, beginning balance	108	115
Additions	500	490
Amortization	(489)	(497)
Deferred revenue, ending balance	119	108	119
Data Services and Other Revenues
Disaggregation Of Revenue [Roll Forward]
Deferred revenue, beginning balance	93	88
Additions	400	401
Amortization	(363)	(396)
Deferred revenue, ending balance	130	93	130
Mortgage Technology
Disaggregation Of Revenue [Roll Forward]
Deferred revenue, beginning balance	106	51
Additions	147	177
Amortization	(169)	(122)
Deferred revenue, ending balance	$ 84	$ 106	$ 84
Mortgage Technology | Black Knight, Inc.
Disaggregation Of Revenue [Roll Forward]
Deferred revenue acquired				$ 68