XML 29 R4.htm IDEA: XBRL DOCUMENT v3.8.0.1
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2015
Statement of Comprehensive Income [Abstract]      
Tax on unrealized gain (loss) on available for sale securities $ (4,401) $ 1,499 $ (1,135)
Tax on net unrealized gain (loss) on derivatives 0 0 (56)
Tax on adjustment to postemployment benefit obligation $ (3,487) $ 2,466 $ 3,688