Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2012		Sep. 30, 2011	Sep. 30, 2010
Cash Flows from Operating Activities:
Net earnings	$ 233,064		$ 213,725	$ 143,828
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	64,698		59,722	51,123
Share-based compensation expense	16,852		15,560	12,818
Amortization of deferred financing costs	5,202		6,846	7,775
Excess tax benefit from share-based compensation	(14,390)		(3,712)	(248)
Net loss (gain) on disposal of property and equipment	89		327	(41)
Loss on extinguishment of debt	38,376		2,765	985
Deferred income taxes	2,388		459	(662)
Changes in (exclusive of effects of acquisitions):
Trade accounts receivable	4,288		(4,163)	(17)
Accounts receivable, other	(8,018)		(3,971)	(4,520)
Income taxes receivable	(23,734)
Inventory	(55,815)		(47,930)	(34,247)
Prepaid expenses	(2,559)		(3,262)	(4,369)
Other assets	5,176		2,145	3,565
Accounts payable and accrued liabilities	16,725		51,332	37,443
Income taxes payable	17,254		1,041	7,020
Other liabilities	(2,014)		957	(3,207)
Net cash provided by operating activities	297,582		291,841	217,246
Cash Flows from Investing Activities:
Capital expenditures	(69,086)		(59,955)	(48,702)
Proceeds from sales of property and equipment	108		384	143
Acquisitions, net of cash acquired	(43,535)		(87,164)	(36,463)
Net cash used by investing activities	(112,513)		(146,735)	(85,022)
Cash Flows from Financing Activities:
Proceeds from issuances of long-term debt	2,101,489		428,605	334,000
Repayments of long-term debt	(1,921,284)		(577,911)	(461,567)
Repurchases of common stock	(200,000)			(70)
Debt issuance costs	(31,297)		(5,397)
Proceeds from exercises of stock options	28,020		10,942	878
Excess tax benefit from share-based compensation	14,390		3,712	248
Net cash used by financing activities	(8,682)		(140,049)	(126,511)
Effect of foreign currency exchange rate changes on cash and cash equivalents	352		(1,070)	(666)
Net increase in cash and cash equivalents	176,739		3,987	5,047
Cash and cash equivalents, beginning of year	63,481		59,494	54,447
Cash and cash equivalents, end of year	240,220		63,481	59,494
Supplemental Cash Flow Information:
Interest paid	110,005	[1]	102,059	108,733
Income taxes paid	$ 135,591		$ 123,749	$ 83,528

[1] For the fiscal year ended September 30, 2012, interest paid includes $24.4 million in call premiums paid upon the redemption of certain notes.