Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities:
Net earnings	$ 117,691	$ 131,392
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	49,921	55,754
Net gain on sales of assets	(4,188)	(766)
Stock-based compensation	13,267	11,086
Deferred income taxes	(87,338)	1,623
Loss on derivatives reclassified from accumulated comprehensive earnings into earnings	39	74
Proceeds from formation of joint venture (Note 4)	250,000	0
Changes in operating assets and liabilities:
Accounts receivable	40,012	65,345
Inventories	(56,187)	(44,630)
Accounts payable and accrued liabilities	(6,548)	(41,868)
Current income taxes	58,184	(10,897)
Retirement benefit obligations	(2,903)	(3,365)
Other	(9,469)	7,742
Net cash provided by operating activities	362,481	171,490
Cash flows from investing activities:
Payments for purchase of property, plant and equipment	(128,628)	(190,865)
Proceeds from sale of assets	5,747	2,486
Net cash used in investing activities	(122,881)	(188,379)
Cash flows from financing activities:
Cash dividends paid	(19,841)	(18,285)
Proceeds from sales of treasury stock	12,532	7,936
Payments for repurchases of common stock	(125,542)	(157,118)
Borrowings on revolving lines of credit and short-term borrowings	560,000	869,970
Payments on revolving lines of credit and short-term borrowings	(520,596)	(701,610)
Payments of long-term debt and capital lease obligations	107,188	0
Payments of debt financing costs	0	(2,359)
Net cash used in financing activities	(200,635)	(1,466)
Effect of exchange rate changes on cash and cash equivalents	(3,048)	(9,548)
Net change in cash and cash equivalents	35,917	(27,903)
Cash and cash equivalents at beginning of period	82,202	115,287
Cash and cash equivalents at end of period	$ 118,119	$ 87,384