Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets - (Narrative) (Details)

v3.19.2
Intangible Assets - (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]        
Amortization expense $ 15.0 $ 16.4 $ 31.3 $ 21.6