XML 114 R102.htm IDEA: XBRL DOCUMENT v3.19.1
Retirement Benefits (Schedule of Net Periodic Benefit Costs) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2019
Mar. 31, 2018
Pension Plan [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 874 $ 576 $ 1,749 $ 1,145
Interest cost 2,081 1,845 4,157 3,675
Expected return on plan assets (3,669) (3,620) (7,327) (7,210)
Amortization of: Net actuarial loss 228 224 453 446
Amortization of: Prior service (benefit) cost 178 178 355 355
Net periodic retirement pension (benefit) cost (308) (797) (613) (1,589)
Contributions paid 509 119 1,063 431
Other Postretirement Benefit Plans [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 2 2 3 4
Interest cost 289 291 577 583
Amortization of: Net actuarial loss 14 24 28 48
Amortization of: Prior service (benefit) cost (2) (39) (3) (79)
Curtailment (gain) loss       (330)
Net periodic retirement pension (benefit) cost 303 278 605 226
Contributions paid - other postretirement plans 704 1,009 1,077 1,235
United States | Pension Plan [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 362 411 725 822
Interest cost 1,596 1,501 3,192 3,002
Expected return on plan assets (2,997) (2,903) (5,993) (5,807)
Amortization of: Net actuarial loss 155 149 309 299
Amortization of: Prior service (benefit) cost 178 178 355 355
Net periodic retirement pension (benefit) cost (706) (664) (1,412) (1,329)
Other Countries [Member] | Pension Plan [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 512 165 1,024 323
Interest cost 485 344 965 673
Expected return on plan assets (672) (717) (1,334) (1,403)
Amortization of: Net actuarial loss 73 75 144 147
Net periodic retirement pension (benefit) cost 398 (133) 799 (260)
Contributions paid $ 509 $ 119 $ 1,063 $ 431