XML 48 R86.htm IDEA: XBRL DOCUMENT v3.19.3
Goodwill And Other Acquired Intangible Assets - Estimated Future Amortization Expense for Acquired Intangible Assets Subject to Amortization (Detail)
$ in Millions
Sep. 30, 2019
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2019 (after September 30) $ 20.1
2020 95.4
2021 95.2
2022 95.1
2023 92.6
Thereafter 1,055.7
Total estimated future amortization $ 1,454.1