CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (PARENTHETICAL) - USD ($) $ in Thousands |
12 Months Ended | ||
---|---|---|---|
Sep. 30, 2018 |
Sep. 30, 2017 |
Sep. 30, 2016 |
|
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent, Parenthetical Disclosures [Abstract] | |||
Net unrealized holding gains (losses) on available-for-sale securities, tax | $ (146) | $ 1,473 | $ (245) |
Amortization and unrealized gain (loss) on interest rate agreements, tax | 13,017 | 43,238 | (56,723) |
Net unrealized gains on commodity cash flow hedges, tax | $ 0 | $ 3,183 | $ 13,078 |