Aggregate collateral ratio (as defined by the underlying credit agreement)

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- Definition

Debt Instrument, Interest Rate, Effective Period

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Debt Instrument, Percentage Outstanding after Repurchase with Equity Offerings- Percentage of original amount of debt instrument to remain outstanding after repurchase with equity offerings

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Debt Instrument, Redemption Option with Equity Offerings, Percent of Par

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Debt Instrument, Redemption Price, Percentage of Principal Amount Outstanding After Redemption

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Line of Credit Facility, Allowed Increase in Borrowing Capacity

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No definition available.

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Line of Credit Facility, Number of Lenders

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- Definition

Ownership Interest In Guarantor Subsidiaries

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No definition available.

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Face (par) amount of debt instrument at time of issuance.

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-SubTopic 30
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Contractual interest rate for funds borrowed, under the debt agreement.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Percentage of principal amount of debt redeemed.

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No definition available.

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Amount, after accumulated amortization, of debt discount.

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- Definition

Represents the aggregate of total long-term debt, including current maturities and short-term debt.

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No definition available.

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- Definition

Weighted average interest rate of debt outstanding.

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No definition available.

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- Definition

The cash outflow for the extinguishment of long-term borrowing, with the highest claim on the assets of the entity in case of bankruptcy or liquidation, before its maturity.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Paragraph 15
-Subparagraph (b)
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- Definition

Gross amount of debt extinguished.

+ References

No definition available.

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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- Definition

Reflects the difference between the fair value of payments made to legally extinguish a debt and its carrying value at that time. This item excludes the write-off of amounts previously capitalized as debt issuance costs.

+ References

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- References

No definition available.

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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No definition available.

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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No definition available.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

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- Definition

Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

The carrying amount, as of the date of the latest financial statement presented, of real estate owned but transferred to serve as collateral for the payment of the related debt obligation, primarily a secured borrowing or repurchase agreement, and for which the transferee is not permitted to sell or re-pledge them to an unrelated party.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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- References

No definition available.

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- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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Borrowings - Narrative (Details)	1 Months Ended		3 Months Ended								12 Months Ended
Borrowings - Narrative (Details)	Sep. 30, 2018 USD ($) lender	Oct. 31, 2017 USD ($)	Sep. 30, 2018 USD ($) lender	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Sep. 30, 2018 USD ($) lender	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	May 31, 2018 USD ($)	Jan. 15, 2010 USD ($)	Jun. 15, 2006
Line of Credit Facility [Abstract]
Line of credit facility, remaining borrowing capacity	$ 200,000,000		$ 200,000,000				$ 145,300,000				$ 200,000,000	$ 145,300,000
Senior Notes [Abstract]
Beazer homes' ownership interest in guarantor subsidiaries	100.00%		100.00%								100.00%
Loss on extinguishment of debt			$ 1,935,000	$ 0	$ 0	$ 25,904,000	(2,933,000)	$ 0	$ 15,563,000	$ 0	$ 27,839,000	12,630,000	$ 13,423,000
Loss on extinguishment of debt, before write off of debt issuance cost												(15,600,000)
Secured Debt [Abstract]
Total debt (net of premium/discount and debt issuance costs)	$ 1,231,254,000		$ 1,231,254,000				1,327,412,000				$ 1,231,254,000	1,327,412,000
5 3/4% Senior Notes Maturing June 2019
Senior Notes [Abstract]
Debt instrument stated interest rate (percent)	5.75%		5.75%								5.75%
6 3/4% Senior Notes Maturing March of 2025
Senior Notes [Abstract]
Debt instrument stated interest rate (percent)	6.75%		6.75%								6.75%
7 1/4% Senior Notes Maturing February 2023
Senior Notes [Abstract]
Debt instrument stated interest rate (percent)	7.25%		7.25%								7.25%
Senior Notes
Senior Notes [Abstract]
Loss on extinguishment of debt, before write off of debt issuance cost						25,900,000
Redemption of senior notes						34,500,000
Write off of deferred debt issuance cost						3,200,000
Secured Debt [Abstract]
Total debt (net of premium/discount and debt issuance costs)	$ 1,163,138,000		$ 1,163,138,000				1,259,840,000				$ 1,163,138,000	1,259,840,000
Senior Notes \| 5 3/4% Senior Notes Maturing June 2019
Senior Notes [Abstract]
Loss on extinguishment of debt	$ (1,800,000)
Debt instrument stated interest rate (percent)	5.75%		5.75%								5.75%
Loss on extinguishment of debt, before write off of debt issuance cost	$ (1,935,000)
Redemption of senior notes	98,200,000
Write off of deferred debt issuance cost	100,000
Secured Debt [Abstract]
Total debt (net of premium/discount and debt issuance costs)	$ 0		$ 0				321,393,000				$ 0	321,393,000
Senior Notes \| 5.875% unsecured Senior Notes
Senior Notes [Abstract]
Debt instrument stated interest rate (percent)		5.875%
Junior Subordinated Notes [Abstract]
Aggregate principal amount of debt		$ 400,000,000.0
Senior Notes \| 6 3/4% Senior Notes Maturing March of 2025
Senior Notes [Abstract]
Debt instrument stated interest rate (percent)	6.75%		6.75%						6.75%		6.75%
Notes payable									$ 250,000,000
Percent of original debt amount required to be offered for repurchase (percent)									35.00%
Debt instrument redemption price (percent)									101.00%
Secured Debt [Abstract]
Total debt (net of premium/discount and debt issuance costs)	$ 250,000,000		$ 250,000,000				250,000,000				$ 250,000,000	250,000,000
Senior Notes \| 6 3/4% Senior Notes Maturing March of 2025 \| Optional Redemption Under Indenture
Senior Notes [Abstract]
Percent of original debt amount required to be offered for repurchase (percent)									65.00%
Debt instrument redemption price (percent)									106.75%
Senior Notes \| 5.25% unsecured Senior Notes due 2019
Senior Notes [Abstract]
Debt instrument stated interest rate (percent)	5.75%		5.75%								5.75%
Extinguishment of debt, amount						225,000,000
Senior Notes \| 7 1/4% Senior Notes Maturing February 2023
Senior Notes [Abstract]
Debt instrument stated interest rate (percent)	7.25%		7.25%								7.25%
Extinguishment of debt, amount						$ 175,000,000
Secured Debt [Abstract]
Total debt (net of premium/discount and debt issuance costs)	$ 24,834,000		$ 24,834,000				199,834,000				$ 24,834,000	199,834,000
Junior Subordinated Notes
Senior Notes [Abstract]
Debt instrument stated interest rate (percent)																7.987%
Junior Subordinated Notes [Abstract]
Effective period of debt instrument interest rate											10 years
Aggregate principal amount of debt															$ 75,000,000
Debt Instrument, Unamortized Discount	36,770,000		36,770,000				38,837,000				$ 36,770,000	38,837,000
Secured Debt [Abstract]
Total debt (net of premium/discount and debt issuance costs)	$ 64,003,000		$ 64,003,000				61,937,000				$ 64,003,000	61,937,000
Weighted average fixed interest rate of debt (percent)	4.79%		4.79%								4.79%
Other Secured Notes Payable
Secured Debt [Abstract]
Total debt (net of premium/discount and debt issuance costs)	$ 4,113,000		$ 4,113,000				5,635,000				$ 4,113,000	5,635,000
Weighted average fixed interest rate of debt (percent)	1.56%		1.56%								1.56%
Secured Revolving Credit Facility
Line of Credit Facility [Abstract]
Maximum borrowing capacity	$ 200,000,000		$ 200,000,000				180,000,000				$ 200,000,000	180,000,000
Number of lenders \| lender	3		3								3
Inventory assets pledged as collateral	$ 951,500,000		$ 951,500,000							$ 800,000,000	$ 951,500,000
Letters of credit secured using cash collateral							34,700,000					34,700,000
Outstanding borrowings under Secured Revolving Credit Facility							0					0
Letter of Credit
Line of Credit Facility [Abstract]
Letters of credit secured using cash collateral	10,400,000		10,400,000				$ 10,800,000				10,400,000	$ 10,800,000
Standby Letters of Credit \| Issuance Capacity
Line of Credit Facility [Abstract]
Maximum borrowing capacity														$ 50,000,000.0
Standby Letters of Credit \| Standby Letter for Credit Facility
Line of Credit Facility [Abstract]
Letters of credit secured using cash collateral	27,700,000		27,700,000								27,700,000
Standby Letters of Credit \| Backstop Standby Letters of Credit
Line of Credit Facility [Abstract]
Maximum borrowing capacity														$ 30,000,000
Maximum \| Secured Revolving Credit Facility
Line of Credit Facility [Abstract]
Allowed increase in borrowing capacity	250,000,000		250,000,000								250,000,000
Aggregate collateral ratio										4.00
Minimum \| Secured Revolving Credit Facility
Line of Credit Facility [Abstract]
Allowed increase in borrowing capacity	$ 50,000,000		$ 50,000,000								$ 50,000,000
Aggregate collateral ratio										1.00
Debt Instrument, Redemption, Period One \| Senior Notes \| 5.875% unsecured Senior Notes
Senior Notes [Abstract]
Debt instrument, redemption price (percent)		100.00%
Debt Instrument, Redemption, Period One \| Senior Notes \| 6 3/4% Senior Notes Maturing March of 2025
Senior Notes [Abstract]
Debt instrument, redemption price (percent)											100.00%
Debt Instrument, Redemption, Period Two \| Senior Notes \| 5.875% unsecured Senior Notes
Senior Notes [Abstract]
Debt instrument, redemption price (percent)		105.875%
Percentage of principal amount redeemed		35.00%
Percentage of principal amount outstanding after redemption		65.00%
Debt Instrument, Redemption, Period Two \| Senior Notes \| 6 3/4% Senior Notes Maturing March of 2025
Senior Notes [Abstract]
Debt instrument, redemption price (percent)											105.063%
Debt Instrument, Redemption, Period Two \| Senior Notes \| 7 1/4% Senior Notes Maturing February 2023
Senior Notes [Abstract]
Debt instrument, redemption price (percent)											103.625%