Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Cash Flows from Operating Activities:
Net earnings	$ 271,623	$ 258,047	$ 215,076
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	107,658	108,829	112,323
Share-based compensation expense	9,180	10,519	10,507
Amortization of deferred financing costs	3,786	3,832	3,264
Net loss/(gain) on disposal and impairment of assets	(7,544)	181	8,464
Net loss on extinguishment of debt	951	876	27,981
Deferred income taxes	5,532	(20,538)	14,122
Changes in (exclusive of effects of acquisitions):
Trade accounts receivable	4,399	(1,949)	702
Accounts receivable, other	(20,432)	2,743	(7,520)
Inventory	(20,272)	(16,450)	(16,343)
Other current assets	7,418	12,164	1,480
Other assets	(3,225)	48	(6,700)
Accounts payable and accrued liabilities	(42,719)	4,592	(18,779)
Income taxes payable	6,144	(221)	323
Other liabilities	(2,084)	9,988	(1,614)
Net cash provided by operating activities	320,415	372,661	343,286
Cash Flows from Investing Activities:
Payments for property and equipment	(107,755)	(86,507)	(89,666)
Proceeds from sales of property and equipment	15,312	369	41
Acquisitions, net of cash acquired	(3,424)	(9,175)
Net cash used by investing activities	(95,867)	(95,313)	(89,625)
Cash Flows from Financing Activities:
Proceeds from issuance of long-term debt	593,504	461,819	1,277,250
Repayments of long-term debt	(777,538)	(558,599)	(1,216,643)
Debt issuance costs		(1,151)	(8,376)
Payments for common stock repurchased	(47,434)	(166,701)	(346,873)
Proceeds from exercises of stock options	2,160	1,350	17,339
Net cash used by financing activities	(229,308)	(263,282)	(277,303)
Effect of foreign exchange rate changes on cash and cash equivalents	(1,040)	(530)	779
Net increase (decrease) in cash and cash equivalents	(5,800)	13,536	(22,863)
Cash and cash equivalents, beginning of period	77,295	63,759	86,622
Cash and cash equivalents, end of period	71,495	77,295	63,759
Supplemental Cash Flow Information:
Interest paid	95,171	90,077	141,883
Income taxes paid	83,783	70,253	114,553
Capital expenditures incurred but not paid	$ 26,233	$ 15,315	$ 8,367