Supplemental Guarantor Information - Unaudited Consolidating Statements of Cash Flows (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Condensed Financial Statements, Captions [Line Items]
Net cash used in operating activities	$ (188,052)	$ (76,336)
Cash flows from investing activities:
Capital expenditures	(6,641)	(3,869)
Investments in unconsolidated entities	(3,193)	(400)
Return of capital from unconsolidated entities	0	432
Increases in restricted cash	(2,588)	(1,044)
Decreases in restricted cash	801	7,562
Net cash (used in) provided by investing activities	(11,621)	2,681
Cash flows from financing activities:
Repayment of debt	(4,747)	(183,319)
Proceeds from issuance of new debt	0	200,000
Settlement of unconsolidated entity debt obligation	0	(500)
Debt issuance costs	(26)	(4,635)
Advances to/from subsidiaries	0	0
Payments for other financing activities	(393)	(26)
Net cash (used in) provided by financing activities	(5,166)	11,520
Decrease in cash and cash equivalents	(204,839)	(62,135)
Cash and cash equivalents at beginning of period	504,459	487,795
Cash and cash equivalents at end of period	299,620	425,660
Beazer Homes USA, Inc.
Condensed Financial Statements, Captions [Line Items]
Net cash used in operating activities	(45,803)	(14,665)
Cash flows from investing activities:
Capital expenditures	0	0
Investments in unconsolidated entities	0	0
Return of capital from unconsolidated entities		0
Increases in restricted cash	(1,898)	(668)
Decreases in restricted cash	39	7,367
Net cash (used in) provided by investing activities	(1,859)	6,699
Cash flows from financing activities:
Repayment of debt	(3,857)	(183,224)
Proceeds from issuance of new debt		200,000
Settlement of unconsolidated entity debt obligation		0
Debt issuance costs	(26)	(4,635)
Advances to/from subsidiaries	(145,227)	(62,166)
Payments for other financing activities	(393)	(26)
Net cash (used in) provided by financing activities	(149,503)	(50,051)
Decrease in cash and cash equivalents	(197,165)	(58,017)
Cash and cash equivalents at beginning of period	499,341	481,394
Cash and cash equivalents at end of period	302,176	423,377
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net cash used in operating activities	(142,360)	(61,595)
Cash flows from investing activities:
Capital expenditures	(6,641)	(3,869)
Investments in unconsolidated entities	(3,193)	(400)
Return of capital from unconsolidated entities		432
Increases in restricted cash	(690)	(376)
Decreases in restricted cash	762	195
Net cash (used in) provided by investing activities	(9,762)	(4,018)
Cash flows from financing activities:
Repayment of debt	(890)	(95)
Proceeds from issuance of new debt		0
Settlement of unconsolidated entity debt obligation		(500)
Debt issuance costs	0	0
Advances to/from subsidiaries	148,387	63,544
Payments for other financing activities	0	0
Net cash (used in) provided by financing activities	147,497	62,949
Decrease in cash and cash equivalents	(4,625)	(2,664)
Cash and cash equivalents at beginning of period	6,324	8,215
Cash and cash equivalents at end of period	1,699	5,551
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net cash used in operating activities	111	(76)
Cash flows from investing activities:
Capital expenditures	0	0
Investments in unconsolidated entities	0	0
Return of capital from unconsolidated entities		0
Increases in restricted cash	0	0
Decreases in restricted cash	0	0
Net cash (used in) provided by investing activities	0	0
Cash flows from financing activities:
Repayment of debt	0	0
Proceeds from issuance of new debt		0
Settlement of unconsolidated entity debt obligation		0
Debt issuance costs	0	0
Advances to/from subsidiaries	(59)	(56)
Payments for other financing activities	0	0
Net cash (used in) provided by financing activities	(59)	(56)
Decrease in cash and cash equivalents	52	(132)
Cash and cash equivalents at beginning of period	1,637	646
Cash and cash equivalents at end of period	1,689	514
Consolidating Adjustments
Condensed Financial Statements, Captions [Line Items]
Net cash used in operating activities	0	0
Cash flows from investing activities:
Capital expenditures	0	0
Investments in unconsolidated entities	0	0
Return of capital from unconsolidated entities		0
Increases in restricted cash	0	0
Decreases in restricted cash	0	0
Net cash (used in) provided by investing activities	0	0
Cash flows from financing activities:
Repayment of debt	0	0
Proceeds from issuance of new debt		0
Settlement of unconsolidated entity debt obligation		0
Debt issuance costs	0	0
Advances to/from subsidiaries	(3,101)	(1,322)
Payments for other financing activities	0	0
Net cash (used in) provided by financing activities	(3,101)	(1,322)
Decrease in cash and cash equivalents	(3,101)	(1,322)
Cash and cash equivalents at beginning of period	(2,843)	(2,460)
Cash and cash equivalents at end of period	$ (5,944)	$ (3,782)