Segment Information (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
Jun. 30, 2013 segment	Dec. 31, 2012
Segment Information
Number of activity segments	47
Reconciliation of assets from segment to consolidated
Net real estate	$ 8,230,711	$ 5,042,137
Goodwill	15,834	16,945
Other corporate assets	196,939	142,156
Total assets	9,415,533	5,443,363
Automotive service
Reconciliation of assets from segment to consolidated
Net real estate	111,551	96,830
Intangible assets	3,769
Goodwill	470	471
Automotive tire services
Reconciliation of assets from segment to consolidated
Net real estate	258,926	184,601
Intangible assets	17,972	470
Goodwill	865	865
Beverages
Reconciliation of assets from segment to consolidated
Net real estate	308,417	310,555
Intangible assets	3,184	3,313
Child care
Reconciliation of assets from segment to consolidated
Net real estate	59,132	61,747
Goodwill	5,190	5,276
Convenience stores
Reconciliation of assets from segment to consolidated
Net real estate	776,180	670,103
Intangible assets	24,936
Goodwill	2,050	2,064
Dollar stores
Reconciliation of assets from segment to consolidated
Net real estate	594,380	450,566
Intangible assets	45,702	12,475
Drug stores
Reconciliation of assets from segment to consolidated
Net real estate	895,975	159,482
Intangible assets	183,107	14,885
Financial services
Reconciliation of assets from segment to consolidated
Net real estate	222,135	25,166
Intangible assets	48,127	4,443
Food processing
Reconciliation of assets from segment to consolidated
Net real estate	129,611	102,964
Intangible assets	27,142	21,785
Grocery stores
Reconciliation of assets from segment to consolidated
Net real estate	294,513	219,216
Intangible assets	23,563	5,650
Health and fitness
Reconciliation of assets from segment to consolidated
Net real estate	404,322	330,503
Intangible assets	33,981	15,056
Health care
Reconciliation of assets from segment to consolidated
Net real estate	203,812	4,562
Intangible assets	44,346
Restaurants-casual dining
Reconciliation of assets from segment to consolidated
Net real estate	502,600	450,574
Intangible assets	14,655
Goodwill	2,382	2,430
Restaurant-quick service
Reconciliation of assets from segment to consolidated
Net real estate	326,321	250,692
Intangible assets	21,708	3,464
Goodwill	1,166	1,176
Theaters
Reconciliation of assets from segment to consolidated
Net real estate	374,524	381,123
Intangible assets	26,036	28,475
Transportation services
Reconciliation of assets from segment to consolidated
Net real estate	599,079	130,203
Intangible assets	128,050	27,997
Wholesale club
Reconciliation of assets from segment to consolidated
Net real estate	460,002	308,202
Intangible assets	36,282
Other non-reportable segments
Reconciliation of assets from segment to consolidated
Net real estate	1,709,231	905,048
Intangible assets	289,489	104,112
Goodwill	$ 3,711	$ 4,663
Number of non-reportable segments	30	30

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

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-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 FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

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-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph e

-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 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 43

-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 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 72

-Subparagraph d

-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 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph e

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-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 8: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 34

-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.

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