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Goodwill and Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Summary of Activity Related to Goodwill
A summary of the changes in the carrying amount of goodwill follows (in millions):
December 31,
20212020
Balance at beginning of period$3,468.0 $3,402.4 
Acquisitions, including post acquisition adjustments447.0 154.7 
Disposals(3.2)(55.6)
Impairments— (33.5)
Balance at end of period$3,911.8 $3,468.0 
Summary of Components of Indefinite-Lived Intangible Assets A summary of the components of intangible assets follows (in millions):
December 31, 2021December 31, 2020
Gross Carrying AmountAccumulated AmortizationNetGross Carrying AmountAccumulated AmortizationNet
Finite-lived intangible assets:
Management rights agreements$24.8 $(9.4)$15.4 $31.1 $(10.1)$21.0 
Other19.6 (10.1)9.5 13.6 (6.5)7.1 
Total finite-lived intangible assets44.4 (19.5)24.9 44.7 (16.6)28.1 
Indefinite-lived intangible assets18.8 — 18.8 18.8 — 18.8 
Total intangible assets$63.2 $(19.5)$43.7 $63.5 $(16.6)$46.9 
Summary of Components of Finite-Lived Intangible Assets A summary of the components of intangible assets follows (in millions):
December 31, 2021December 31, 2020
Gross Carrying AmountAccumulated AmortizationNetGross Carrying AmountAccumulated AmortizationNet
Finite-lived intangible assets:
Management rights agreements$24.8 $(9.4)$15.4 $31.1 $(10.1)$21.0 
Other19.6 (10.1)9.5 13.6 (6.5)7.1 
Total finite-lived intangible assets44.4 (19.5)24.9 44.7 (16.6)28.1 
Indefinite-lived intangible assets18.8 — 18.8 18.8 — 18.8 
Total intangible assets$63.2 $(19.5)$43.7 $63.5 $(16.6)$46.9 
Summary of Scheduled Amortization
Total estimated amortization expense for the next five years and thereafter related to intangible assets follows (in millions):
2022$6.6 
20233.5 
20241.8 
20251.5 
20261.2 
Thereafter10.3 
Total$24.9