Annual report pursuant to Section 13 and 15(d)

Retirement Benefits - Pension Plans and Defined Contribution Plans (Details)

v3.3.0.814
Retirement Benefits - Pension Plans and Defined Contribution Plans (Details) - USD ($)
$ in Millions
12 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2013
Cash Flows      
Cash contribution to defined benefit retirement plans $ 15.4 $ 20.1 $ 20.8
Defined Contribution Plans      
Expenses related to defined contribution plans $ 9.1 8.7 8.2
Minimum      
Defined Contribution Plans      
Contribution vesting period 0 years    
Maximum      
Defined Contribution Plans      
Employer's contribution to defined contribution plans (as a percent) 4.00%    
Employer's matching contribution to defined contribution plans (as a percent) 6.00%    
Contribution vesting period 5 years    
Pension Plans Defined Benefit      
Cash Flows      
Cash contribution to defined benefit retirement plans $ 14.9 19.9 20.1
Pension Plans Defined Benefit | Minimum      
Cash Flows      
Estimated cash contribution to defined benefit retirement plans 14.9    
U.S. Pension Benefits      
Fair Value Measurements      
Fair value of plan assets 158.9 249.7 228.1
Estimated Future Benefit Payments      
2016 11.7    
2017 12.3    
2018 13.1    
2019 13.9    
2020 14.7    
2021 - 2025 83.0    
Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 29.5 29.4 $ 28.6
Estimated Future Benefit Payments      
2016 7.3    
2017 7.2    
2018 7.0    
2019 6.8    
2020 6.6    
2021 - 2025 31.1    
Estimate Of Fair Value Fair Value Disclosure | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 29.5 29.4  
Level 1 | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 26.5 27.4  
Level 2 | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 1.0 0.0  
Level 3 | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 2.0 2.0  
Cash equivalents | Estimate Of Fair Value Fair Value Disclosure | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 5.5 5.4  
Cash equivalents | Level 1 | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 5.5 5.4  
Cash equivalents | Level 2 | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 0.0 0.0  
Cash equivalents | Level 3 | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 0.0 0.0  
Equity securities | Estimate Of Fair Value Fair Value Disclosure | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 5.9 7.3  
Equity securities | Level 1 | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 5.9 7.3  
Equity securities | Level 2 | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 0.0 0.0  
Equity securities | Level 3 | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 0.0 0.0  
Corporate bonds | Estimate Of Fair Value Fair Value Disclosure | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 0.0 9.0  
Corporate bonds | Level 1 | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 0.0 9.0  
Corporate bonds | Level 2 | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 0.0 0.0  
Corporate bonds | Level 3 | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 0.0 0.0  
Government index funds | Estimate Of Fair Value Fair Value Disclosure | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 5.2 5.7  
Government index funds | Level 1 | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 5.2 5.7  
Government index funds | Level 2 | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 0.0 0.0  
Government index funds | Level 3 | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 0.0 0.0  
Corporate bond funds | Estimate Of Fair Value Fair Value Disclosure | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 9.9 0.0  
Corporate bond funds | Level 1 | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 9.9 0.0  
Corporate bond funds | Level 2 | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 0.0 0.0  
Corporate bond funds | Level 3 | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 0.0 0.0  
Equity mutual funds | Estimate Of Fair Value Fair Value Disclosure | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 0.0 0.0  
Equity mutual funds | Level 1 | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 0.0 0.0  
Equity mutual funds | Level 2 | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 0.0 0.0  
Equity mutual funds | Level 3 | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 0.0 0.0  
Real estate and real estate funds | Estimate Of Fair Value Fair Value Disclosure | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 2.0 2.0  
Real estate and real estate funds | Level 1 | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 0.0 0.0  
Real estate and real estate funds | Level 2 | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 0.0 0.0  
Real estate and real estate funds | Level 3 | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 2.0 2.0  
Other | Estimate Of Fair Value Fair Value Disclosure | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 1.0    
Other | Level 1 | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 0.0    
Other | Level 2 | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 1.0    
Other | Level 3 | Non-U.S. Pension Plans      
Fair Value Measurements      
Fair value of plan assets 0.0    
Adjustments for New Accounting Pronouncement | U.S. Pension Benefits      
Fair Value Measurements      
Fair value of plan assets $ 158.9 $ 249.7