XML 77 R99.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Retirement Benefit Plans - Future Benefit Payments (Details) - Pension Plan [Member]
$ in Millions
Dec. 31, 2019
USD ($)
Defined Benefit Plan Disclosure [Line Items]  
2018 $ 85.1
Future pension benefit payments  
2019 82.1
2020 72.4
2021 66.7
2022 62.2
2023-2027 $ 283.5