Employee Benefit Plans (Schedule of Actuarial Assumptions Used) (Details) |
12 Months Ended | ||
---|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2014 |
|
Pension Plan | |||
Assumptions used to determine benefit obligations: | |||
Discount rate | 3.42% | 4.22% | 4.22% |
Expected rate of compensation increase | 4.00% | 4.00% | 4.00% |
Assumptions used to determine benefit costs: | |||
Discount rate | 4.22% | 4.22% | 4.82% |
Expected long-term rate of return on plan assets | 7.00% | 7.00% | 7.00% |
Expected rate of compensation increase | 4.00% | 4.00% | 4.00% |
Postretirement Plan | |||
Assumptions used to determine benefit obligations: | |||
Discount rate | 3.33% | 4.15% | 4.10% |
Assumptions used to determine benefit costs: | |||
Discount rate | 4.15% | 4.10% | 4.73% |
Expected long-term rate of return on plan assets | 4.89% | 4.90% | 4.92% |