Fair Value Measurements - Schedule of Information About Fair Value Inputs Used to Calculate Fair Value (Details)
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12 Months Ended |
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Dec. 31, 2017
ft²
Property
$ / ft²
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Dec. 31, 2016
ft²
Property
$ / ft²
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Dec. 31, 2015
Property
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
|
|
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| Number of Properties | Property |
2,480
|
2,615
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2,629
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| Fair Value Estimated Using Comparable Properties |
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
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| Number of Properties | Property |
17
|
16
|
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| Fair Value Estimated Using Listing Price Or Broker Opinion Of Value |
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
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| Number of Properties | Property |
1
|
17
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| Fair Value Estimated Using Signed Purchase And Sale Agreements |
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
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|
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| Number of Properties | Property |
8
|
9
|
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| Retail | Fair Value Estimated Using Comparable Properties |
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
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|
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| Square Footage | ft² |
364,940
|
290,770
|
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| Retail | Fair Value Estimated Using Comparable Properties | Weighted Average |
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|
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
|
|
|
| Weighted Average Price (usd/sq ft) |
55.68
|
58.78
|
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| Retail | Fair Value Estimated Using Comparable Properties | Minimum |
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
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| Weighted Average Price (usd/sq ft) |
13.66
|
17.17
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| Retail | Fair Value Estimated Using Comparable Properties | Maximum |
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
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|
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| Weighted Average Price (usd/sq ft) |
305.05
|
502.23
|
|
| Retail | Fair Value Estimated Using Listing Price Or Broker Opinion Of Value |
|
|
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
|
|
|
| Square Footage | ft² |
22,500
|
516,916
|
|
| Retail | Fair Value Estimated Using Listing Price Or Broker Opinion Of Value | Weighted Average |
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|
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
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|
|
| Weighted Average Price (usd/sq ft) |
88.89
|
40.80
|
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| Retail | Fair Value Estimated Using Listing Price Or Broker Opinion Of Value | Minimum |
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
|
|
|
| Weighted Average Price (usd/sq ft) |
88.89
|
15.40
|
|
| Retail | Fair Value Estimated Using Listing Price Or Broker Opinion Of Value | Maximum |
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|
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
|
|
|
| Weighted Average Price (usd/sq ft) |
88.89
|
170.72
|
|
| Retail | Fair Value Estimated Using Signed Purchase And Sale Agreements |
|
|
|
| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
|
|
|
| Square Footage | ft² |
150,376
|
265,610
|
|
| Retail | Fair Value Estimated Using Signed Purchase And Sale Agreements | Weighted Average |
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|
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
|
|
|
| Weighted Average Price (usd/sq ft) |
230.52
|
95.11
|
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| Retail | Fair Value Estimated Using Signed Purchase And Sale Agreements | Minimum |
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
|
|
|
| Weighted Average Price (usd/sq ft) |
55.30
|
19.66
|
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| Retail | Fair Value Estimated Using Signed Purchase And Sale Agreements | Maximum |
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
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|
|
| Weighted Average Price (usd/sq ft) |
346.23
|
393.02
|
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| Industrial | Fair Value Estimated Using Comparable Properties |
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
|
|
|
| Square Footage | ft² |
370,824
|
104,864
|
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| Industrial | Fair Value Estimated Using Comparable Properties | Weighted Average |
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|
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
|
|
|
| Weighted Average Price (usd/sq ft) |
5.35
|
26.43
|
|
| Industrial | Fair Value Estimated Using Comparable Properties | Minimum |
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
|
|
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| Weighted Average Price (usd/sq ft) |
3.30
|
|
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| Industrial | Fair Value Estimated Using Comparable Properties | Maximum |
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
|
|
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| Weighted Average Price (usd/sq ft) |
8.56
|
|
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| Industrial | Fair Value Estimated Using Listing Price Or Broker Opinion Of Value |
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
|
|
|
| Square Footage | ft² |
|
149,627
|
|
| Industrial | Fair Value Estimated Using Listing Price Or Broker Opinion Of Value | Weighted Average |
|
|
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
|
|
|
| Weighted Average Price (usd/sq ft) |
|
9.09
|
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| Industrial | Fair Value Estimated Using Signed Purchase And Sale Agreements |
|
|
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
|
|
|
| Square Footage | ft² |
223,747
|
|
|
| Industrial | Fair Value Estimated Using Signed Purchase And Sale Agreements | Weighted Average |
|
|
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
|
|
|
| Weighted Average Price (usd/sq ft) |
37.09
|
|
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| Industrial | Fair Value Estimated Using Signed Purchase And Sale Agreements | Minimum |
|
|
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
|
|
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| Weighted Average Price (usd/sq ft) |
24.02
|
|
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| Industrial | Fair Value Estimated Using Signed Purchase And Sale Agreements | Maximum |
|
|
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
|
|
|
| Weighted Average Price (usd/sq ft) |
54.21
|
|
|
| Office | Fair Value Estimated Using Comparable Properties |
|
|
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
|
|
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| Square Footage | ft² |
161,346
|
135,675
|
|
| Office | Fair Value Estimated Using Comparable Properties | Weighted Average |
|
|
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
|
|
|
| Weighted Average Price (usd/sq ft) |
40.14
|
35.00
|
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| Office | Fair Value Estimated Using Comparable Properties | Minimum |
|
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
|
|
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| Weighted Average Price (usd/sq ft) |
24.82
|
|
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| Office | Fair Value Estimated Using Comparable Properties | Maximum |
|
|
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
|
|
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| Weighted Average Price (usd/sq ft) |
244.86
|
|
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| Office | Fair Value Estimated Using Listing Price Or Broker Opinion Of Value |
|
|
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
|
|
|
| Square Footage | ft² |
|
34,992
|
|
| Office | Fair Value Estimated Using Listing Price Or Broker Opinion Of Value | Weighted Average |
|
|
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| Fair Value Inputs, Assets, Quantitative Information [Line Items] |
|
|
|
| Weighted Average Price (usd/sq ft) |
|
56.81
|
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