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Goodwill and Other Intangibles - Narrative (Details)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2020
USD ($)
Jun. 30, 2019
USD ($)
Jun. 30, 2020
USD ($)
reporting_unit
Jun. 30, 2019
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Finite-Lived Intangible Assets [Line Items]              
Amortization $ 35.7 $ 36.8 $ 72.0 $ 72.2 $ 145.8 $ 156.6 $ 224.8
Capitalized software write-off     $ 12.3 $ 0.0      
Number of reporting units | reporting_unit     3        
Capitalized software              
Finite-Lived Intangible Assets [Line Items]              
Capitalized software write-off $ 12.3