Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

+ Details

Name:	invest_DerivativeNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentDescriptionOfVariableRateBasis
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of derivative instruments of a particular derivative asset or group of derivative assets held by the entity.

+ 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=35706170&loc=SL5580258-113959

Reference 2: 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=35706170&loc=SL5579245-113959

+ Details

Name:	us-gaap_DerivativeAssetNumberOfInstrumentsHeld
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Cap rate on an interest rate derivative such as an interest rate cap or collar. If market rates exceed the cap rate, a payment or receipt is triggered on the contract.

+ References

No definition available.

+ Details

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

- Definition

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959

+ Details

Name:	us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_DerivativeLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of derivative instruments of a particular group held by the entity.

+ References

+ Details

Name:	us-gaap_DerivativeNumberOfInstrumentsHeld
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_DebtInstrumentAxis=sho_DoubletreeGuestSuitesTimesSquareMortgagePayableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=sho_HiltonSanDiegoBayfrontHotelMortgagePayableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

- Details

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

Interest Rate Derivative Agreements (Details) (USD $)	3 Months Ended		12 Months Ended
Interest Rate Derivative Agreements (Details) (USD $)	Mar. 31, 2014	Mar. 31, 2015	Dec. 31, 2014
Interest Rate Derivative Agreements
Net gain due to changes in the fair value of the company's derivative agreements	$ 109,000
Doubletree Guest Suites Times Square Mortgage Payable
Interest Rate Derivative Agreements
Interest rate, description of reference rate		one-month LIBOR	one-month LIBOR
Interest rate added to base rate (as a percent)		3.25%	3.25%
Entity that owns the Hilton San Diego Bayfront Mortgage Payable
Interest Rate Derivative Agreements
Interest rate, description of reference rate		one-month LIBOR	one-month LIBOR
Interest rate added to base rate (as a percent)		2.25%	2.25%
Interest rate derivative agreements. \| Designated as hedging instrument
Interest Rate Derivative Agreements
Number of derivative agreements designated and qualifying as hedging instruments		0	0
Interest Rate Cap Agreement
Interest Rate Derivative Agreements
Number of interest rate cap derivative agreements		2	2
Interest Rate Cap Agreement \| Not designated as hedging instrument \| Other assets, net
Interest Rate Derivative Agreements
Number of interest rate cap derivative agreements		2	2
Interest Rate Cap Agreement \| Not designated as hedging instrument \| Doubletree Guest Suites Times Square Mortgage Payable
Interest Rate Derivative Agreements
Interest rate, description of reference rate		LIBOR
Strike rate under interest rate cap agreement		4.00%
Notional amount		176,800,000	177,400,000
Interest Rate Cap Agreement \| Not designated as hedging instrument \| Entity that owns the Hilton San Diego Bayfront Mortgage Payable
Interest Rate Derivative Agreements
Interest rate, description of reference rate		LIBOR
Strike rate under interest rate cap agreement		3.75%
Notional amount		117,000,000	117,000,000
Interest Rate Swap Agreement \| Not designated as hedging instrument \| JW Marriott New Orleans Original Mortgage Payable
Interest Rate Derivative Agreements
Net gain due to changes in the fair value of the company's derivative agreements	$ 100,000