Quarterly report pursuant to Section 13 or 15(d)

Retirement Benefits - Narrative (Details)

v3.6.0.2
Retirement Benefits - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]    
Pension Contributions $ 80.0  
Postemployment Benefits, Period Expense 0.1 $ 0.1
Defined Contribution Plan, Cost Recognized $ 2.6 $ 2.3