Quarterly report pursuant to Section 13 or 15(d)

Retirement Benefits (Details)

v3.10.0.1
Retirement Benefits (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
U.S. Pension Benefits        
Retirement and Postemployment Benefits        
Service costs $ 0.7 $ 0.8 $ 2.1 $ 2.7
Interest costs 2.2 2.3 6.5 6.6
Expected return on plan assets (3.5) (3.4) (10.5) (10.1)
Amortization of unrecognized prior service costs, net 0.0 0.1 0.1 0.3
Amortization of net loss 0.8 0.7 2.4 2.8
Net pension costs 0.2 0.5 0.6 2.3
Non-U.S. Pension Benefits        
Retirement and Postemployment Benefits        
Service costs 0.5 1.5 1.5 2.3
Interest costs 0.3 0.2 0.9 0.5
Expected return on plan assets (0.2) (0.2) (0.5) (0.5)
Amortization of unrecognized prior service costs, net 0.1 0.1 0.1 0.1
Amortization of net loss 0.2 0.1 0.7 0.8
Net pension costs $ 0.9 $ 1.7 $ 2.7 $ 3.2