Supplemental Financial Data - Schedule of Finite-Lived and Indefinite-Lived Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Finite-lived Intangible Assets [Roll Forward]
Amortization	$ (386.6)	$ (417.7)
Balance at end of period	2,903.1
Indefinite-lived Intangible Assets [Roll Forward]
Balance at beginning of period	1,280.0	1,280.0
Additions at cost	0.0	0.0
Other	0.0	0.0
Balance at end of period	1,280.0	1,280.0
Total
Balance at beginning of period	3,915.9	4,320.1
Additions at cost	0.6	0.7
Amortization	(386.6)	(417.7)
Other	(23.1)	12.8
Balance at end of period	3,506.8	3,915.9
Noncash or part noncash acquisition, intangible assets acquired	24.8	7.2
Noncash or part noncash acquisition, intangible assets acquired, paid for in prior year	4.3
Accounts Payable and Other Accrued Liabilities, Current
Total
Noncash or part noncash acquisition, intangible assets acquired	11.5	4.6
Other Noncurrent Liabilities
Total
Noncash or part noncash acquisition, intangible assets acquired	9.0	2.6
Customer relationships
Finite-lived Intangible Assets [Roll Forward]
Balance at beginning of period	1,316.7	1,536.7
Additions at cost	0.0	0.0
Amortization	(204.1)	(221.9)
Other	(3.9)	1.9
Balance at end of period	1,108.7	1,316.7
Total
Amortization	(204.1)	(221.9)
Accumulated amortization of intangibles	1,411.2	1,212.7
Reacquired rights
Finite-lived Intangible Assets [Roll Forward]
Balance at beginning of period	233.9	245.5
Additions at cost	0.0	0.0
Amortization	(19.0)	(18.9)
Other	(14.6)	7.3
Balance at end of period	200.3	233.9
Total
Amortization	(19.0)	(18.9)
Accumulated amortization of intangibles	77.3	63.4
Database
Finite-lived Intangible Assets [Roll Forward]
Balance at beginning of period	940.6	1,100.0
Additions at cost	0.0	0.0
Amortization	(147.1)	(160.1)
Other	(3.5)	0.7
Balance at end of period	790.0	940.6
Total
Amortization	(147.1)	(160.1)
Accumulated amortization of intangibles	1,015.7	872.8
Other intangibles
Finite-lived Intangible Assets [Roll Forward]
Balance at beginning of period	144.7	157.9
Additions at cost	0.6	0.7
Amortization	(16.4)	(16.8)
Other	(1.1)	2.9
Balance at end of period	127.8	144.7
Total
Amortization	(16.4)	(16.8)
Accumulated amortization of intangibles	$ 93.1	$ 77.1