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Debt - Master Trust Notes - Narrative (Details) (USD $)
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0 Months Ended | 9 Months Ended | ||||||||||||||||||
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Sep. 30, 2014
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Dec. 31, 2013
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May 20, 2014
New Notes
Mortgages
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Sep. 30, 2014
Master Funding Notes
Property
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Sep. 30, 2014
Master Funding Notes
Mortgages
Property
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Sep. 30, 2014
Net-lease Mortgage Notes
Spirit Master Funding VII, LLC
Property
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Dec. 31, 2013
Net-lease Mortgage Notes
Spirit Master Funding VII, LLC
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Sep. 30, 2014
Net-lease Mortgage Notes
Mortgages
Spirit Master Funding VII, LLC
Property
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Dec. 31, 2013
3.89% Series 2013-1 Class A Interest Only
Spirit Master Funding VII, LLC
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Dec. 31, 2013
5.27% Series 2013-2 Class A Amortizing Net Lease Mortgage Notes
Spirit Master Funding VII, LLC
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Sep. 30, 2014
Weighted Average
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Sep. 30, 2014
Weighted Average
Mortgages
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Sep. 30, 2014
Weighted Average
Master Funding Notes
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Sep. 30, 2014
Weighted Average
Net-lease Mortgage Notes
Spirit Master Funding VII, LLC
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| Debt Instrument [Line Items] | ||||||||||||||||||||
| Extended term of debt | 17 years | |||||||||||||||||||
| Long-term debt | $ 4,007,828,000 | $ 3,778,218,000 | $ 877,800,000 | $ 327,000,000 | ||||||||||||||||
| Number of properties securing borrowings | 714 | 82 | 316 | 77 | ||||||||||||||||
| Weighted average interest rate | 5.58% | 4.74% | ||||||||||||||||||
| Weighted Average Maturity | 4 years 8 months 16 days | [1] | 6 years 9 months 7 days | [1] | 6 years 6 months 29 days | 7 years 3 months 22 days | ||||||||||||||
| Aggregate principal amount of debt | $ 330,000,000 | $ 125,000,000.0 | $ 205,000,000.0 | |||||||||||||||||
| Weighted average stated interest rate | 3.89% | 5.27% | 5.06% | [2] | 5.35% | [2] | ||||||||||||||
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