Quarterly report pursuant to Section 13 or 15(d)

Retirement Benefits - Narrative (Details)

v3.19.3.a.u2
Retirement Benefits - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Nov. 21, 2019
Retirement Benefits [Abstract]      
Accrued pension and postretirement healthcare     $ 30.7
Defined Contribution Plan, Cost $ 3.3 $ 2.8