XML 67 R51.htm IDEA: XBRL DOCUMENT v3.19.1
Goodwill and Intangible Assets - Additional Information (Details)
$ in Millions
Mar. 31, 2019
USD ($)
Expected amortization of intangible assets  
2019 $ 40.0
2020 40.0
2021 40.0
2022 35.0
2023 $ 35.0