Quarterly report pursuant to Section 13 or 15(d)

Retirement Benefits (Details)

v3.20.1
Retirement Benefits (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2020
Mar. 31, 2019
Foreign Plan [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Service costs $ 0.5 $ 0.4 $ 1.1 $ 0.7
Interest costs 0.1 0.3 0.3 0.6
Expected return on plan assets (0.2) (0.2) (0.3) (0.3)
Amortization of net loss 0.9 0.3 1.3 0.5
Net periodic pension cost 1.3 0.8 2.4 1.5
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) 0.0 0.0 0.0 0.0
United States        
Defined Benefit Plan Disclosure [Line Items]        
Service costs 0.3 0.6 0.7 1.2
Interest costs 2.0 2.5 4.0 5.1
Expected return on plan assets (3.2) (3.3) (6.4) (6.6)
Amortization of net loss 1.2 0.2 2.4 0.4
Net periodic pension cost 0.3 0.1 0.7 0.2
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) $ 0.0 $ 0.1 $ 0.0 $ 0.1