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Retirement Benefits (Schedule of Changes in Level Three Pension Plan Assets) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Pension Plans, Defined Benefit [Member]
    
Fair value of plan assets at beginning of year $ 161,503 $ 138,347
Actual return on plan assets 17,162 23,369
Contributions by the company 19,237 3,959
Contributions by plan participants 253 249
Benefits paid 5,736 5,262
Settlements 406 330
Foreign currency exchange rate changes (1,838) 1,171
Fair value of plan assets at end of year 190,175 161,503
Pension Plans, Defined Benefit [Member] | Fair Value, Inputs, Level 3 [Member]
    
Fair value of plan assets at beginning of year 1,862  
Actual return on plan assets 25  
Contributions by the company 205  
Contributions by plan participants 214  
Settlements (406)  
Foreign currency exchange rate changes 76  
Fair value of plan assets at end of year 1,976  
United States Pension Plans of US Entity, Defined Benefit [Member]
    
Fair value of plan assets at beginning of year 105,966 89,980
Actual return on plan assets 10,621 18,123
Contributions by the company 16,050 600
Contributions by plan participants 12 0
Benefits paid 3,131 2,737
Settlements 0 0
Foreign currency exchange rate changes 0 0
Fair value of plan assets at end of year 129,518 105,966
United States Pension Plans of US Entity, Defined Benefit [Member] | Fair Value, Inputs, Level 1 [Member]
    
Fair value of plan assets at end of year 129,518  
Foreign Pension Plans, Defined Benefit [Member]
    
Fair value of plan assets at beginning of year 55,537 48,367
Actual return on plan assets 6,541 5,246
Contributions by the company 3,187 3,359
Contributions by plan participants 241 249
Benefits paid 2,605 2,525
Settlements 406 330
Foreign currency exchange rate changes (1,838) 1,171
Fair value of plan assets at end of year 60,657 55,537
Foreign Pension Plans, Defined Benefit [Member] | Fair Value, Inputs, Level 1 [Member]
    
Fair value of plan assets at end of year 149  
Foreign Pension Plans, Defined Benefit [Member] | Fair Value, Inputs, Level 2 [Member]
    
Fair value of plan assets at end of year 58,532  
Foreign Pension Plans, Defined Benefit [Member] | Fair Value, Inputs, Level 3 [Member]
    
Fair value of plan assets at end of year 1,976  
United Kingdom Plan, Defined Benefit [Member]
    
Fair value of plan assets at end of year 48,381  
Japan Plan, Defined Benefit [Member]
    
Fair value of plan assets at end of year 10,300  
Switzerland Plan, Defined Benefit [Member]
    
Fair value of plan assets at end of year 1,976  
Other Postretirement Benefit Plans, Defined Benefit [Member]
    
Fair value of plan assets at beginning of year 0 0
Contributions by the company 2,369 2,670
Contributions by plan participants 1,837 2,176
Benefits paid 4,206 4,846
Fair value of plan assets at end of year $ 0 $ 0