Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets - (Narrative) (Details)

v3.19.3
Intangible Assets - (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]        
Amortization expense $ 15.2 $ 17.1 $ 46.5 $ 38.7