Represents the common stock dividend per share threshold per quarter, above which holders of securities classified as temporary equity are eligible to receive a participating dividend.

Name:	sho_CommonStockDividendRatePerShareThresholdForParticipatingDividendsToTemporaryEquityHolders
Namespace Prefix:	sho
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow from issuance of securities classified as temporary equity.

+ Details

Name:	sho_GrossProceedsFromIssuanceOfTemporaryEquity
Namespace Prefix:	sho
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the number of board members which can be appointed by holders of securities classified as temporary equity if the entity incurs a financial ratio violation.

+ Details

Name:	sho_NumberOfBoardMembersWhoCanBeAppointedDuringFinancialRatioViolation
Namespace Prefix:	sho
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of hotels acquired by the entity partially financed by proceeds from the issuance of securities classified as temporary equity.

+ Details

Name:	sho_NumberOfHotelsAcquiredWithProceedsFromIssuanceOfTemporaryEquity
Namespace Prefix:	sho
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the price per share at which securities classified as temporary equity are convertible into common shares.

+ Details

Name:	sho_TemporaryEquityCoversionPricePerShare
Namespace Prefix:	sho
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the percentage of discount on conversion price or liquidation preference of securities classified as temporary equity.

+ Details

Name:	sho_TemporaryEquityDiscountOnConversionPricePercentage
Namespace Prefix:	sho
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The amount per share used to calculate dividend payments on securities classified as temporary equity.

+ Details

Name:	sho_TemporaryEquityDividendRatePerShareDollarAmount
Namespace Prefix:	sho
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the basis point increase per quarter for dividends on securities classified as temporary equity if the entity incurs a financial ratio violation.

+ Details

Name:	sho_TemporaryEquityDividendRatePerShareIncreasePerQuarterDuringFinancialRatioViolation
Namespace Prefix:	sho
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the issue price per share of securities classified as temporary equity.

+ Details

Name:	sho_TemporaryEquityIssuePricePerShare
Namespace Prefix:	sho
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of consecutive quarters that the entity may fail to meet certain financial ratios before a financial ratio violation occurs with respect to securities classified as temporary equity.

+ Details

Name:	sho_TemporaryEquityNumberOfConsecutiveQuartersFinancialRatioViolation
Namespace Prefix:	sho
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The costs incurred by the reporting entity related to the issuance of securities classified as temporary equity.

+ Details

Name:	sho_TemporaryEquityStockIssuanceCosts
Namespace Prefix:	sho
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Number of common shares issued for each share classified as temporary equity that is converted.

+ Details

Name:	sho_TemporaryEquityStockSharesIssuedUponConversion
Namespace Prefix:	sho
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_TemporaryEquityAbstract
Namespace Prefix:	us-gaap
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The carrying value (book value) of an entity's issued and outstanding stock which is not included within permanent equity in Stockholders Equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.27(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number D-98
-Paragraph 2
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 4
-Section 08
-Paragraph i

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 28
-Subparagraph a
-Article 5

+ Details

Name:	us-gaap_TemporaryEquityCarryingAmount
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The per share liquidation preference (or restrictions) of stock classified as temporary equity that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Name:	us-gaap_TemporaryEquityLiquidationPreferencePerShare
Namespace Prefix:	us-gaap
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount to be paid per share that is classified as temporary equity by entity upon redemption. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
-Paragraph 10
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 28
-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 2,3,4,5,6,7,8
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Name:	us-gaap_TemporaryEquityRedemptionPricePerShare
Namespace Prefix:	us-gaap
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of securities classified as temporary equity that have been sold (or granted) to the entity's shareholders. Securities issued include securities outstanding and securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 5
-Section 02
-Paragraph 28
-Subparagraph b

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.27(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_TemporaryEquitySharesIssued
Namespace Prefix:	us-gaap
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Series C Cumulative Convertible Redeemable Preferred Stock (Details) (USD $)	1 Months Ended	3 Months Ended
	Jul. 31, 2005	Jun. 30, 2011	Dec. 31, 2010	Jul. 08, 2010	Jun. 30, 2010	Jan. 31, 2009
Series C Cumulative Convertible Redeemable Preferred Stock
Preferred stock sold (in shares)	4,102,564	4,102,564	4,102,564
Liquidation preference (in dollars per share)		$ 24.375	$ 24.375		$ 24.375
Gross proceeds from sale of cumulative convertible redeemable preferred stock	$ 99,000,000
Cumulative convertible redeemable preferred stock issue price (in dollars per share)	$ 24.13
Temporary equity discount on conversion price (as a percent)	1.00%
Other costs of the offering of cumulative convertible redeemable preferred stock	130,000
Number of hotels acquired with net proceeds from issuance	6
Cumulative convertible redeemable preferred stock conversion price (in dollars per share)		$ 22.23				$ 22.23
Cumulative convertible redeemable preferred stock conversion ratio (in shares)		1.096				1.096
Cumulative convertible redeemable preferred stock redemption price (in dollars per share)		$ 24.375		$ 24.375
Quarterly dividend on the Series C preferred stock (in dollars per share)		$ 0.393
Common stock dividend threshold per quarter used to determine participating dividend for securities classified as temporary equity (in dollars per share)		$ 0.339
Basis point increase in dividend rate per quarter on securities classified as temporary equity if the entity incurs a financial ratio violation (as a percent)		0.0050
Number of consecutive quarters that the entity may fail to meet certain financial ratios before a financial ratio violation occurs (in number of quarters)		4
Number of board members who can be appointed by temporary equity shareholders if the entity incurs a financial ratio violation		1
Carrying value of preferred stock		$ 100,000,000	$ 100,000,000