Average FICO credit score of the entity's homebuyers for loans originated during the period.

No definition available.

Name:	ryl_AverageHomebuyersFICOScores
Namespace Prefix:	ryl_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

This element represents the average number of days before the closing of loan for which it would lock the interest rate.

+ References

No definition available.

+ Details

Name:	ryl_AverageNumberOfDaysOfLockInPeriodBeforeClosingOfLoan
Namespace Prefix:	ryl_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

This element represents cash deposits and/or letters of credit provided to the selling party in accordance with the terms of a land purchase contract.

+ References

No definition available.

+ Details

Name:	ryl_CashDepositsAndOrLettersOfCredit
Namespace Prefix:	ryl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

Name:	ryl_CommitmentsAndContingenciesLineItems
Namespace Prefix:	ryl_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents average combined loan-to-value ratio for mortgage loans originated by the entity during the period. Loan to value is an equation that mortgage lenders use to assess their risk in lending a borrower money to purchase property. The loan to value equation is essentially a ratio of the amount of money being borrowed to the value or purchase price of the property, whichever is less.

+ References

No definition available.

+ Details

Name:	ryl_MortgageLoansAverageCombinedLoanToValue
Namespace Prefix:	ryl_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The composition of mortgage loan types originated by the entity.

+ References

No definition available.

+ Details

Name:	ryl_MortgageLoansOnRealEstatePercentage
Namespace Prefix:	ryl_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

This element represents the aggregate purchase price of lots expected to be purchased in accordance with executed lot option purchase contracts containing provisions that require the parties to the option contract to perform all of the obligations under the contract.

+ References

No definition available.

+ Details

Name:	ryl_PurchaseCommitmentSpecificPerformanceAmount
Namespace Prefix:	ryl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

This element represents the aggregate purchase price of lots expected to be purchased in accordance with executed lot option purchase contracts.

+ References

No definition available.

+ Details

Name:	ryl_RealEstateAggregatePurchasePrice
Namespace Prefix:	ryl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

High end of the range of variable interest rates when a range is presented for a group of interest rate derivatives.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeHigherVariableInterestRateRange
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Nominal or face amount used to calculate payments on the derivative liability.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

-URI http://asc.fasb.org/extlink&oid=6519104

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5579245-113959

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Definition

Low end of the range of variable interest rates when a range is presented for a group of interest rate derivatives.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeLowerVariableInterestRateRange
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (b)(1)

-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

+ Details

Name:	us-gaap_GuaranteeObligationsMaximumExposure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateLockCommitmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis=us-gaap_PrimeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis=ryl_MortgageBackedSecuritiesOriginatedByEntityIssuedByUSGovernmentSponsoredEnterprisesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_GuaranteeObligationsByNatureAxis=us-gaap_PerformanceGuaranteeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_GuaranteeObligationsByNatureAxis=us-gaap_StandbyLettersOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_OtherCommitmentsAxis=ryl_LotOptionPurchaseContractsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Commitments and Contingencies (Details) $ in Millions	3 Months Ended	6 Months Ended	12 Months Ended
Commitments and Contingencies (Details) $ in Millions	Jun. 30, 2015 USD ($) item	Jun. 30, 2015 USD ($)	Dec. 31, 2014 USD ($) item	Dec. 31, 2013 item	Dec. 31, 2012 item	Dec. 31, 2011 item	Dec. 31, 2010 item
Commitments and Contingencies
Mortgage loan types originated (as a percent)	100.00%		100.00%	100.00%	100.00%	100.00%	100.00%
Average FICO credit score \| item	730		732	733	731	726	723
Average combined loan-to-value ratio (as a percent)	87.90%		87.80%	89.80%	90.10%	90.30%	90.80%
Mortgage interest rate lock commitments
Commitments and Contingencies
Interest rate, low end range (percentage)			3.50%
Interest rate, high end range (percentage)			4.80%
Designated as Hedging Instrument \| Mortgage interest rate lock commitments
Commitments and Contingencies
Average number of days of interest rate commitment before closing		180 days
Interest rate, low end range (percentage)	3.50%	3.50%
Interest rate, high end range (percentage)	4.80%	4.80%
Notional amount	$ 311.5	$ 311.5	$ 148.0
Prime
Commitments and Contingencies
Mortgage loan types originated (as a percent)	66.20%		67.60%	57.20%	48.60%	42.20%	34.90%
Government (FHA/VA/USDA)
Commitments and Contingencies
Mortgage loan types originated (as a percent)	33.80%		32.40%	42.80%	51.40%	57.80%	65.10%
Development bonds
Commitments and Contingencies
Guarantee obligations estimated exposure pertaining to land development and improvements	$ 203.1	203.1	$ 189.4
Performance-related cash deposits and letters of credit
Commitments and Contingencies
Guarantee obligations estimated exposure pertaining to land development and improvements	97.0	97.0	87.3
Lot option purchase contracts
Commitments and Contingencies
Cash deposits and/or letters of credit	75.2	75.2	72.8
Aggregate purchase price	$ 783.7	783.7	847.1
Purchase commitments, specific performance		$ 1.4	$ 1.4