Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash Flows from Operating Activities:
Net earnings	$ 95,503	$ 66,583
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	52,945	53,997
Share-based compensation expense	5,541	6,532
Amortization of deferred financing costs	2,326	1,767
Loss (gain) on early extinguishment of debt	1,390	(357)
Loss (gain) on disposal of equipment and other property	1,741	(18)
Deferred income taxes	(365)	5,547
Changes in (exclusive of effects of acquisitions):
Trade accounts receivable	(3,437)	158
Accounts receivable, other	(5,544)	19,199
Inventory	(127,324)	1,365
Other current assets	3,588	(17,692)
Other assets	(4,307)	575
Operating leases, net	(2,420)
Accounts payable and accrued liabilities	101,331	(55,679)
Income taxes payable	13,447	(7,199)
Other liabilities	(2,859)	1,353
Net cash provided by operating activities	131,556	76,131
Cash Flows from Investing Activities:
Payments for property and equipment, net of proceeds	(27,095)	(71,960)
Acquisitions, net of cash acquired	(2,245)	(1,944)
Net cash used by investing activities	(29,340)	(73,904)
Cash Flows from Financing Activities:
Proceeds from issuance of long-term debt		787,500
Repayments of long-term debt	(213,271)	(437,385)
Payments for common stock repurchased		(61,357)
Proceeds from equity awards	2,073	2,771
Net cash (used) provided by financing activities	(211,198)	291,529
Effect of foreign exchange rate changes on cash and cash equivalents	3,152	(837)
Net (decrease) increase in cash and cash equivalents	(105,830)	292,919
Cash and cash equivalents, beginning of period	514,151	71,495
Cash and cash equivalents, end of period	408,321	364,414
Supplemental Cash Flow Information:
Interest paid	46,445	41,366
Income taxes paid	20,791	45,521
Capital expenditures incurred but not paid	$ 3,255	$ 5,090