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Goodwill and Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Rollforward of Goodwill
A summary of the changes in the carrying amount of goodwill follows (in millions):
December 31,
20242023
Balance at beginning of period$4,326.0 $4,137.1 
Acquisitions, including post acquisition adjustments757.2 225.9 
Disposals and deconsolidations(15.2)(37.0)
Balance at end of period$5,068.0 $4,326.0 
Schedule of Components of Indefinite-Lived Intangible Assets
A summary of the components of intangible assets follows (in millions):
December 31, 2024December 31, 2023
Gross Carrying AmountAccumulated AmortizationNetGross Carrying AmountAccumulated AmortizationNet
Finite-lived intangible assets:
Management rights agreements$50.3 $(18.7)$31.6 $42.8 $(12.0)$30.8 
Other30.1 (22.7)7.4 30.0 (20.6)9.4 
Total finite-lived intangible assets80.4 (41.4)39.0 72.8 (32.6)40.2 
Indefinite-lived intangible assets6.7 — 6.7 14.6 — 14.6 
Total intangible assets$87.1 $(41.4)$45.7 $87.4 $(32.6)$54.8 
Schedule of Components of Finite-Lived Intangible Assets
A summary of the components of intangible assets follows (in millions):
December 31, 2024December 31, 2023
Gross Carrying AmountAccumulated AmortizationNetGross Carrying AmountAccumulated AmortizationNet
Finite-lived intangible assets:
Management rights agreements$50.3 $(18.7)$31.6 $42.8 $(12.0)$30.8 
Other30.1 (22.7)7.4 30.0 (20.6)9.4 
Total finite-lived intangible assets80.4 (41.4)39.0 72.8 (32.6)40.2 
Indefinite-lived intangible assets6.7 — 6.7 14.6 — 14.6 
Total intangible assets$87.1 $(41.4)$45.7 $87.4 $(32.6)$54.8 
Schedule of Amortization Expense
Total estimated amortization expense for the next five years and thereafter related to intangible assets follows (in millions):
2025$5.9 
20266.3 
20275.1 
20284.3 
20293.3 
Thereafter14.1 
Total$39.0