XML 29 R37.htm IDEA: XBRL DOCUMENT v2.4.0.8

Real Estate Properties (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended					12 Months Ended		12 Months Ended		1 Months Ended	12 Months Ended								12 Months Ended		0 Months Ended	1 Months Ended		12 Months Ended			12 Months Ended				12 Months Ended						1 Months Ended		12 Months Ended	1 Months Ended	12 Months Ended		5 Months Ended	1 Months Ended	5 Months Ended	0 Months Ended	5 Months Ended					12 Months Ended								12 Months Ended								12 Months Ended				1 Months Ended																																													1 Months Ended
	Jun. 30, 2013	Dec. 31, 2013 sqft item building property	Dec. 31, 2012 item	Dec. 31, 2011 item	Dec. 31, 2013 Above market lease	Dec. 31, 2012 Above market lease	Dec. 31, 2013 In-place lease intangibles	Dec. 31, 2012 In-place lease intangibles	Dec. 31, 2013 Below market lease	Dec. 31, 2012 Below market lease	Sep. 30, 2013 Five Star	Dec. 31, 2013 Five Star	Dec. 31, 2012 Five Star	Dec. 31, 2011 Five Star	Dec. 31, 2013 MOB building property sqft	Dec. 31, 2012 MOB property building	Dec. 31, 2011 MOB	Dec. 31, 2013 Senior living communities item	Dec. 31, 2012 Senior living communities item	Dec. 31, 2013 Senior living communities Five Star property	Dec. 31, 2012 Senior living communities Sunrise Senior Living, Inc.	Dec. 31, 2013 Senior living communities Five Star property item	Aug. 31, 2013 Senior living communities Five Star property	May 31, 2011 Senior living communities Five Star property	Dec. 31, 2013 Senior living communities Five Star property item	Dec. 31, 2013 Skilled nursing facility property	Dec. 31, 2013 Rehabilitation hospitals Five Star item	Dec. 31, 2013 Acquisition Triple Net Senior Living Communities property item	Dec. 31, 2012 Acquisition Triple Net Senior Living Communities property item	Jan. 31, 2013 Acquisition Triple Net Senior Living Communities Stellar Senior Living, LLC	Jul. 31, 2012 Acquisition Triple Net Senior Living Communities Stellar Senior Living, LLC	Dec. 31, 2013 Acquisition Managed Senior Living Communities property item	Dec. 31, 2012 Acquisition Managed Senior Living Communities property item	Dec. 31, 2013 Acquisition MOB building property sqft	Dec. 31, 2012 Acquisition MOB building property sqft	Dec. 31, 2013 Acquisition Senior living communities property	Dec. 31, 2012 Acquisition Senior living communities property	Oct. 31, 2013 Acquisition Senior living communities Five Star item	Dec. 31, 2013 Operations Transfer Agreement TRS item	Dec. 31, 2013 Operations Transfer Agreement Sunrise Senior Living, Inc. item	May 31, 2012 Operations Transfer Agreement Five Star TRS item	Dec. 31, 2013 Operations Transfer Agreement Senior living communities Sunrise Senior Living, Inc.	May 31, 2012 Operations Transfer Agreement Senior living communities Sunrise Senior Living, Inc. item	Dec. 31, 2013 Sale property	Aug. 31, 2013 Sale Senior living communities Five Star item	Dec. 31, 2013 Sale Skilled nursing facility property	Dec. 31, 2013 Sale Rehabilitation hospitals property	Dec. 31, 2013 Sale Rehabilitation hospitals property	Dec. 31, 2012 Properties acquired in 2012	Dec. 31, 2013 Properties acquired in 2013	Dec. 31, 2013 Land	Dec. 31, 2012 Land	Dec. 31, 2013 Land Acquisition Triple Net Senior Living Communities	Dec. 31, 2012 Land Acquisition Triple Net Senior Living Communities	Dec. 31, 2013 Land Acquisition Managed Senior Living Communities	Dec. 31, 2012 Land Acquisition Managed Senior Living Communities	Dec. 31, 2013 Land Acquisition MOB	Dec. 31, 2012 Land Acquisition MOB	Dec. 31, 2013 Buildings and improvements	Dec. 31, 2012 Buildings and improvements	Dec. 31, 2013 Buildings and improvements Acquisition Triple Net Senior Living Communities	Dec. 31, 2012 Buildings and improvements Acquisition Triple Net Senior Living Communities	Dec. 31, 2013 Buildings and improvements Acquisition Managed Senior Living Communities	Dec. 31, 2012 Buildings and improvements Acquisition Managed Senior Living Communities	Dec. 31, 2013 Buildings and improvements Acquisition MOB	Dec. 31, 2012 Buildings and improvements Acquisition MOB	Dec. 31, 2013 Furniture, fixtures and equipment	Dec. 31, 2012 Furniture, fixtures and equipment	Dec. 31, 2013 Furniture, fixtures and equipment Acquisition Triple Net Senior Living Communities	Dec. 31, 2012 Furniture, fixtures and equipment Acquisition Triple Net Senior Living Communities	Dec. 31, 2013 Furniture, fixtures and equipment Acquisition Managed Senior Living Communities	Dec. 31, 2012 Furniture, fixtures and equipment Acquisition Managed Senior Living Communities	Jan. 31, 2013 WA Acquisition Triple Net Senior Living Communities property item	Feb. 28, 2013 WA Acquisition MOB property sqft	Jan. 31, 2013 WA Land Acquisition Triple Net Senior Living Communities	Feb. 28, 2013 WA Land Acquisition MOB	Jan. 31, 2013 WA Buildings and improvements Acquisition Triple Net Senior Living Communities	Feb. 28, 2013 WA Buildings and improvements Acquisition MOB	Jan. 31, 2013 WA Furniture, fixtures and equipment Acquisition Triple Net Senior Living Communities	Aug. 31, 2013 GA Acquisition Managed Senior Living Communities property item	May 31, 2012 GA Acquisition MOB property sqft	Aug. 31, 2013 GA Acquisition Senior living communities Five Star item	May 31, 2012 GA Additional acquisition MOB property sqft	Aug. 31, 2013 GA Land Acquisition Managed Senior Living Communities	May 31, 2012 GA Land Acquisition MOB	May 31, 2012 GA Land Additional acquisition MOB	Aug. 31, 2013 GA Buildings and improvements Acquisition Managed Senior Living Communities	May 31, 2012 GA Buildings and improvements Acquisition MOB	May 31, 2012 GA Buildings and improvements Additional acquisition MOB	Aug. 31, 2013 GA Furniture, fixtures and equipment Acquisition Managed Senior Living Communities	Jul. 31, 2012 Various Acquisition Triple Net Senior Living Communities property item	Oct. 31, 2013 Various Acquisition Managed Senior Living Communities property item	Jul. 31, 2012 Various Land Acquisition Triple Net Senior Living Communities	Oct. 31, 2013 Various Land Acquisition Managed Senior Living Communities	Jul. 31, 2012 Various Buildings and improvements Acquisition Triple Net Senior Living Communities	Oct. 31, 2013 Various Buildings and improvements Acquisition Managed Senior Living Communities	Jul. 31, 2012 Various Furniture, fixtures and equipment Acquisition Triple Net Senior Living Communities	Oct. 31, 2013 Various Furniture, fixtures and equipment Acquisition Managed Senior Living Communities	Nov. 30, 2013 WI Acquisition Managed Senior Living Communities property item	Nov. 30, 2013 WI Acquisition Senior living communities Five Star item	Nov. 30, 2013 WI Land Acquisition Managed Senior Living Communities	Nov. 30, 2013 WI Buildings and improvements Acquisition Managed Senior Living Communities	Nov. 30, 2013 WI Furniture, fixtures and equipment Acquisition Managed Senior Living Communities	Feb. 29, 2012 Alabama Acquisition Managed Senior Living Communities property item	Feb. 29, 2012 Alabama Land Acquisition Managed Senior Living Communities	Feb. 29, 2012 Alabama Buildings and improvements Acquisition Managed Senior Living Communities	Feb. 29, 2012 Alabama Furniture, fixtures and equipment Acquisition Managed Senior Living Communities	Jul. 31, 2012 South Carolina Acquisition Managed Senior Living Communities property item	May 31, 2012 South Carolina Acquisition Managed Senior Living Communities property item	Jul. 31, 2012 South Carolina Land Acquisition Managed Senior Living Communities	May 31, 2012 South Carolina Land Acquisition Managed Senior Living Communities	Jul. 31, 2012 South Carolina Buildings and improvements Acquisition Managed Senior Living Communities	May 31, 2012 South Carolina Buildings and improvements Acquisition Managed Senior Living Communities	Jul. 31, 2012 South Carolina Furniture, fixtures and equipment Acquisition Managed Senior Living Communities	May 31, 2012 South Carolina Furniture, fixtures and equipment Acquisition Managed Senior Living Communities	Aug. 31, 2012 New York Acquisition Managed Senior Living Communities property item	Dec. 31, 2013 New York Acquisition Senior living communities Five Star item	Aug. 31, 2012 New York Land Acquisition Managed Senior Living Communities	Aug. 31, 2012 New York Buildings and improvements Acquisition Managed Senior Living Communities	Aug. 31, 2012 New York Furniture, fixtures and equipment Acquisition Managed Senior Living Communities	Aug. 31, 2012 Missouri Acquisition Managed Senior Living Communities property item	Aug. 31, 2012 Missouri Land Acquisition Managed Senior Living Communities	Aug. 31, 2012 Missouri Buildings and improvements Acquisition Managed Senior Living Communities	Aug. 31, 2012 Missouri Furniture, fixtures and equipment Acquisition Managed Senior Living Communities	Dec. 31, 2012 Tennessee Acquisition Managed Senior Living Communities property item	Nov. 30, 2012 Tennessee Acquisition MOB property sqft	Dec. 31, 2012 Tennessee Land Acquisition Managed Senior Living Communities	Nov. 30, 2012 Tennessee Land Acquisition MOB	Dec. 31, 2012 Tennessee Buildings and improvements Acquisition Managed Senior Living Communities	Nov. 30, 2012 Tennessee Buildings and improvements Acquisition MOB	Dec. 31, 2012 Tennessee Furniture, fixtures and equipment Acquisition Managed Senior Living Communities	Jan. 31, 2014 Texas Senior living communities Five Star	Dec. 31, 2012 Texas Acquisition Managed Senior Living Communities property item	Dec. 31, 2012 Texas Acquisition MOB property sqft	Jul. 31, 2012 Texas Acquisition MOB property sqft	Jan. 31, 2014 Texas Sale Senior living communities Five Star property item	Dec. 31, 2012 Texas Land Acquisition Managed Senior Living Communities	Dec. 31, 2012 Texas Land Acquisition MOB	Jul. 31, 2012 Texas Land Acquisition MOB	Dec. 31, 2012 Texas Buildings and improvements Acquisition Managed Senior Living Communities	Dec. 31, 2012 Texas Buildings and improvements Acquisition MOB	Jul. 31, 2012 Texas Buildings and improvements Acquisition MOB	Dec. 31, 2012 Texas Furniture, fixtures and equipment Acquisition Managed Senior Living Communities	Mar. 31, 2013 MS Acquisition MOB property sqft	Mar. 31, 2013 MS Land Acquisition MOB	Mar. 31, 2013 MS Buildings and improvements Acquisition MOB	Aug. 31, 2013 MA Acquisition MOB property sqft	Sep. 30, 2012 MA Acquisition MOB property sqft	Feb. 28, 2014 MA Agreement to acquire MOB property building sqft	Jul. 31, 2012 MA Sale MOB building item sqft	Aug. 31, 2013 MA Land Acquisition MOB	Sep. 30, 2012 MA Land Acquisition MOB	Aug. 31, 2013 MA Buildings and improvements Acquisition MOB	Sep. 30, 2012 MA Buildings and improvements Acquisition MOB	Dec. 31, 2013 FL Acquisition MOB property sqft	Jul. 31, 2012 FL Acquisition MOB property sqft	Dec. 31, 2013 FL Land Acquisition MOB	Jul. 31, 2012 FL Land Acquisition MOB	Dec. 31, 2013 FL Buildings and improvements Acquisition MOB	Jul. 31, 2012 FL Buildings and improvements Acquisition MOB	Jun. 30, 2012 Hawaii Acquisition MOB property sqft	Jun. 30, 2012 Hawaii Land Acquisition MOB	Jun. 30, 2012 Hawaii Buildings and improvements Acquisition MOB	Jun. 30, 2012 Maryland Acquisition MOB property sqft	Jun. 30, 2012 Maryland Land Acquisition MOB	Jun. 30, 2012 Maryland Buildings and improvements Acquisition MOB	Dec. 31, 2012 Minnesota Acquisition MOB property sqft	Dec. 31, 2012 Minnesota Land Acquisition MOB	Dec. 31, 2012 Minnesota Buildings and improvements Acquisition MOB	Dec. 31, 2012 Colorado Acquisition MOB property sqft	Dec. 31, 2012 Colorado Land Acquisition MOB	Dec. 31, 2012 Colorado Buildings and improvements Acquisition MOB
Real Estate Properties
Real estate properties, at cost		$ 5,263,625	$ 5,019,615																																																$ 623,756	$ 599,313							$ 4,423,517	$ 4,222,832							$ 216,352	$ 197,470
Accumulated depreciation		840,760	714,687																																																								723,258	615,001							117,502	99,686
Number of properties acquired or agreed to be acquired																1								6	44			1	4			5	7	6	12	6	11																																				1	1						1	1		1								4	3							1					1				1	1							1					1				1	1							1	2	1									1			1	1	1						3	1					1			1			1			1
Number of buildings acquired																																		7	13																																																																																																																		2
Number of living units																		744	120									150	511			374	948					213							112																												150							93		93									511	213							68	68				92				232	59							310	310				87				90								78			36
Cash Paid plus Assumed Debt, excluding closing costs															202,824	449,657												22,350	36,500			62,999	187,462	117,475	225,695			29,004																																			22,350	38,000						22,030	8,600	22,030	23,100								36,500	29,004							11,965	11,965				11,300				37,273	8,059							99,000					11,280				11,550	9,200							9,000	23,550	16,850									14,600			49,500	16,400	1,125,420						15,375	7,750					70,495			18,250			15,100			16,400
Assumption of mortgage notes payable		12,266	121,793	217,317																								12,266	6,876				41,814		73,103																																						12,266																		6,876																		4,789							31,187					5,838																											11,462													52,000						9,641
Premium on Assumed Debt																												1,040	628				3,439		1,862																																						1,040																		628																									2,747					692																											1,008																			854
Intangible assets recorded related to acquisition																												1,039	1,900			4,075	6,626																																								1,039							1,013											1,900	2,289							773					583				1,762	362							2,726					330				428								435
Area of real estate properties acquired (in square feet)																																		385,171	839,194																																							144,900							28,440		111,538																																											33,796								80,216	63,082									71,983			105,462	33,600	1,651,037	18,900					62,826	52,858					204,429			92,180			76,637			62,418
Intangible lease assets recorded		166,247	161,419		44,279	45,290	121,968	116,129																										10,012	32,684														41,764	17,131																								6,736							1,392		6,421																																											1,132								4,006	1,973									1,498				1,812							1,778	789					4,306			3,570			4,087			3,196
Intangible lease liabilities recorded		22,170	21,978																															2,271	971														971	2,271																								1,588							10																																													50								11										683																	629			78			183			10
Property plant and equipment recorded																																																					5,120	4,100	5,155	17,250	13,899	30,588			16,562	29,728	52,155	161,369	95,835	165,256			669	1,400	1,614	5,656			5,120	5,639	16,562	27,213	669					1,548	1,080	3,500	18,666	6,138	13,179	803			4,100	2,242	29,728	23,861	1,400	612			1,365	9,628	199		1,300	9,071	346			3,898	1,092	30,670	6,405	943	200			8,460	87,492	3,069		260	10,852	530			800	1,528	10,000	6,590	322						1,440	3,116	990	6,879	16,439	13,887	246		1,269	12,516					4,559	1,443	44,941	14,153			2,432	1,620	11,165	5,341		11,200	55,618		1,900	12,858		2,774	9,276		1,437	11,777
Number of properties acquired, referred to as managed properties																				44		44			44
Number of real estate properties leased																						187			187		2												10				10
Number of properties under accelerated lease termination																																								10
Gain on lease terminations			375																		375
Rental income		459,380	450,769	412,180
Number of communities under management operations																																									10
Payments to purchase the inventory and certain improvements owned by Sunrise		193,303	316,769	797,113																																						1,000
Annual lease rent payable																														1,732	2,920
Reductions in rental income on capitalized above market and below market lease due to amortization		(3,656)	(1,597)	93
Amortization expenses included in depreciation and amortization		22,718	19,340	11,318
Accumulated amortization on lease assets					16,148	13,675	46,605	31,907	9,642	8,286
Weighted average amortization period					6 years		5 years 9 months 18 days		6 years 10 months 24 days
Impairment of asset charges recorded	32,267	7,989	3,071	1,990											1,304	3,071	1,990	44,295
Number of properties classified as held for sale		14													4			10	1																																																																																																																																			1
Number of buildings classified as held for sale		17													7
Property held for sale (in square feet)															831,499
Number of properties impaired		11	1	4
Real estate properties, held for sale																		27,888	850																																																																																																																																			1,100
Number of properties to be sold																							1			1																		3		1	2	2																																																																																								1
Sale price of property sold and agreed to be sold																																												92,550	2,550																																																																																											2,400
Gain (loss) on sale of properties		37,392	(101)	21,315												(101)																												37,392			36,251																																																																																																							101
Number of buildings sold																1																																																																																																																																						1
Real estate improvements purchased												27,208	30,520	33,269
Increase or decrease in annual lease rent payable											9,500	2,177	2,456	2,665									255																																																																																																													210
Expenditure committed relating to leases		9,727
Area of real estate properties leased (in square feet)		771,000
Committed but unspent tenant related obligations		9,024
Future minimum lease payments
2014		407,401
2015		391,338
2016		372,131
2017		329,421
2018		289,009
Thereafter		1,687,867
Future amortization of intangible lease assets and liabilities
2014		22,762
2015		17,964
2016		15,478
2017		11,987
2018		8,393
Thereafter		$ 14,384

X

- Definition

Represents the area of a real estate property, held for sale.

+ References

No definition available.

+ Details

Name:	snh_AreaOfRealEstatePropertyHeldForSale
Namespace Prefix:	snh_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	snh_FiniteLivedIntangibleLeaseAssetsAndLiabilitiesFutureAmortizationExpenseAbstract
Namespace Prefix:	snh_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the increase or decrease in rental income associated with capitalized above market and below market lease due to amortization.

+ References

No definition available.

+ Details

Name:	snh_IncreaseDecreaseInCapitalizedAboveAndBelowMarketLeasesRentalIncome
Namespace Prefix:	snh_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Represents the increase or decrease on the annual rent the lessee is obligated to pay on an operating lease.

+ References

No definition available.

+ Details

Name:	snh_IncreaseDecreaseOperatingLeasesAnnualRent
Namespace Prefix:	snh_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of committed but unspent tenant related obligations based on executed lease.

+ References

No definition available.

+ Details

Name:	snh_LeaseCommittedButUnspentTenantRelatedObligations
Namespace Prefix:	snh_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Represents the amount of expenditure committed by entity relating to leases.

+ References

No definition available.

+ Details

Name:	snh_LeasesCommittedExpenditure
Namespace Prefix:	snh_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The amount of premium on assumed debt that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition.

+ References

No definition available.

+ Details

Name:	snh_NoncashOrPartNoncashAcquisitionPremiumOnDebtAssumed1
Namespace Prefix:	snh_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

This element represents the number of buildings acquired or agreed to be acquired by the entity during the period.

+ References

No definition available.

+ Details

Name:	snh_NumberOfBuildingsAcquired
Namespace Prefix:	snh_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of buildings owned by the entity, which are classified as held for sale as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	snh_NumberOfBuildingsHeldForSale
Namespace Prefix:	snh_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

This element represents the number of buildings sold by the entity.

+ References

No definition available.

+ Details

Name:	snh_NumberOfBuildingsSold
Namespace Prefix:	snh_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the number of communities under management operations under the long term management agreements.

+ References

No definition available.

+ Details

Name:	snh_NumberOfCommunitiesUnderLongTermManagementAgreements
Namespace Prefix:	snh_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

This element represents the number of properties acquired or agreed to be acquired by the entity during the period.

+ References

No definition available.

+ Details

Name:	snh_NumberOfPropertiesAcquired
Namespace Prefix:	snh_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the number of properties acquired or agreed to be acquired by the entity during the period, which are referred by the entity as managed properties.

+ References

No definition available.

+ Details

Name:	snh_NumberOfPropertiesAcquiredManagedProperties
Namespace Prefix:	snh_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

This element represents the number of properties sold or agreed to be sold by the entity.

+ References

No definition available.

+ Details

Name:	snh_NumberOfPropertiesSold
Namespace Prefix:	snh_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the number of properties under the accelerated lease termination.

+ References

No definition available.

+ Details

Name:	snh_NumberOfPropertiesUnderAcceleratedLeaseTermination
Namespace Prefix:	snh_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of real estate properties owned by the entity, which are classified as held for sale as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	snh_NumberOfRealEstatePropertiesHeldForSale
Namespace Prefix:	snh_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Represents the number of real estate properties impaired.

+ References

No definition available.

+ Details

Name:	snh_NumberOfRealEstatePropertiesImpaired
Namespace Prefix:	snh_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

This element represents the aggregate purchase price excluding closing costs, of real estate properties acquired by the entity during the period.

+ References

No definition available.

+ Details

Name:	snh_RealEstateAggregatePurchasePrice
Namespace Prefix:	snh_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

This element represents the aggregate sales price excluding closing costs, of real estate properties sold by the entity during the period.

+ References

No definition available.

+ Details

Name:	snh_RealEstateAggregateSalesPrice
Namespace Prefix:	snh_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Represents the amount of improvements to real estate properties made by lessees and purchased by the entity.

+ References

No definition available.

+ Details

Name:	snh_RealEstateImprovementsByLesseePurchased
Namespace Prefix:	snh_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Represents the intangible assets recorded as part of the real estate acquisition.

+ References

No definition available.

+ Details

Name:	snh_RealEstatePropertiesAcquiredIntangibleAssets
Namespace Prefix:	snh_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Represents the intangible lease assets recorded as part of the real estate acquisition.

+ References

No definition available.

+ Details

Name:	snh_RealEstatePropertiesAcquiredIntangibleLeaseAssets
Namespace Prefix:	snh_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Represents the intangible lease liabilities recorded as part of the real estate acquisition.

+ References

No definition available.

+ Details

Name:	snh_RealEstatePropertiesAcquiredIntangibleLeaseLiabilities
Namespace Prefix:	snh_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Represents the property plant and equipment assets recorded as part of the real estate acquisition.

+ References

No definition available.

+ Details

Name:	snh_RealEstatePropertiesAcquiredPropertyPlantAndEquipment
Namespace Prefix:	snh_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Represents the area of the real estate property subject to an operating lease.

+ References

No definition available.

+ Details

Name:	snh_SquareFootageOfRealEstatePropertyLeased
Namespace Prefix:	snh_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for contractual rent under lease arrangements.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.15(5))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 15

-Subparagraph a

-Article 7



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 15

-Subparagraph 5

-Article 9



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.15(5))

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

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

X

- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(2)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

Name:	us-gaap_AmortizationOfIntangibleAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

Name:	us-gaap_AreaOfRealEstateProperty
Namespace Prefix:	us-gaap_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 45

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2420-110228

+ Details

Name:	us-gaap_AssetImpairmentCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

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

X

- Definition

Amount of amortization expense expected to be recognized after the fifth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

No definition available.

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of amortization expense expected to be recognized during the next fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of amortization expense expected to be recognized during the fifth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of amortization expense expected to be recognized during the fourth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of amortization expense expected to be recognized during the third fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of amortization expense expected to be recognized during the second fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Gain (loss) related to the termination of a contract between the parties. The termination may be due to many causes including early termination of a lease by a lessee, a breach of contract by one party, or a failure to perform.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)(1)

-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

+ Details

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

X

- Definition

The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

+ Details

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

X

- Definition

The amount of debt that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

+ Details

Name:	us-gaap_NoncashOrPartNoncashAcquisitionDebtAssumed1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The number of units in a real estate property owned as of the balance sheet date.

+ References

No definition available.

+ Details

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

X

- Details

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

X

- Definition

Future rental payments receivable within one year of the balance sheet date under an operating lease.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

+ Details

Name:	us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Future rental payments receivable within the fifth year from the balance sheet date under an operating lease.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

+ Details

Name:	us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Future rental payments receivable within the fourth year from the balance sheet date under an operating lease.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

+ Details

Name:	us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Future rental payments receivable within the third year from the balance sheet date under an operating lease.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

+ Details

Name:	us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Future rental payments receivable within the second year from the balance sheet date under an operating lease.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

+ Details

Name:	us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Future minimum lease payments receivable under operating leases for periods greater than five years following the balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

+ Details

Name:	us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The cash outflow from the acquisition of a piece of land, anything permanently fixed to it, including buildings, structures on it and so forth; includes real estate intended to generate income for the owner; excludes real estate acquired for use by the owner.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

+ Details

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

X

- Details

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

X

- Definition

The number of units (items of property) under operating lease arrangements.

+ References

No definition available.

+ Details

Name:	us-gaap_PropertySubjectToOrAvailableForOperatingLeaseNumberOfUnits
Namespace Prefix:	us-gaap_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Carrying amount as of the balance sheet date of investments in land and buildings held for sale, excluding real estate considered to be inventory of the entity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.1(f))

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

Name:	us-gaap_RealEstateHeldforsale
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The cumulative amount of depreciation for real estate property held for investment purposes.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.1(3))

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 7

+ Details

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

X

- Definition

Amount of real estate investment property which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.1(d))

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

Name:	us-gaap_RealEstateInvestmentPropertyAtCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The aggregate revenue from real estate operations during the reporting period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(e))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

+ Details

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