Revenue Recognition Revenue Recognition (Tables)
|6 Months Ended|
Mar. 31, 2019
|Revenue from Contract with Customer [Abstract]|
|Disaggregation of Revenue [Table Text Block]||
Disaggregation of revenue
Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef