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Significant Accounting Policies
6 Months Ended
Mar. 31, 2019
Accounting Policies [Abstract]  
Significant Accounting Policies

2.   Significant Accounting Policies

We adhere to the same accounting policies in the preparation of our condensed consolidated interim financial statements as we do in the preparation of our full-year consolidated financial statements. As permitted under GAAP, interim accounting for certain expenses, including income taxes, is based on full-year assumptions. For interim financial reporting purposes, income taxes are recorded based upon estimated annual effective income tax rates.