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Goodwill and Other Intangible Assets, net - Other Intangibles and Amortization (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Other intangible assets    
Accumulated Amortization $ (615.0) $ (486.3)
Other intangible assets, net    
Other intangible assets, Acquired Cost 1,575.9 1,546.7
Other intangible assets, net $ 960.9 1,060.4
Useful life of finite lived intangible assets 8 years 10 months 24 days  
Estimated amortization expense    
2021 $ 112.6  
2022 96.8  
2023 91.1  
2024 82.0  
2025 79.5  
Thereafter 302.3  
Trade names    
Assets not subject to amortization:    
Indefinite-lived intangible assets 196.6 200.7
Customer relationships    
Other intangible assets    
Acquired Cost 1,000.7 994.5
Accumulated Amortization (393.7) (315.6)
Net Book Value $ 607.0 678.9
Other intangible assets, net    
Useful life of finite lived intangible assets 9 years 2 months 12 days  
Technology and intellectual property    
Other intangible assets    
Acquired Cost $ 263.0 253.6
Accumulated Amortization (172.6) (133.8)
Net Book Value $ 90.4 119.8
Other intangible assets, net    
Useful life of finite lived intangible assets 5 years 10 months 24 days  
Trade names and other    
Other intangible assets    
Acquired Cost $ 115.6 97.9
Accumulated Amortization (48.7) (36.9)
Net Book Value $ 66.9 $ 61.0
Other intangible assets, net    
Useful life of finite lived intangible assets 9 years 9 months 18 days