Shareholder Report, Average Annual Return (Details)
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12 Months Ended |
26 Months Ended |
60 Months Ended |
69 Months Ended |
120 Months Ended |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
| C000136668 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSFCX with load
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| Average Annual Return, Percent |
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2.72%
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(1.61%)
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1.13%
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| C000136670 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSFDX
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| C000136669 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSFEX
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| C000143852 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSAFX
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| C000246124 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSBIX
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| C000159454 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSKEX
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| C000029581 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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STFAX
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| C000136665 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSSVX with load
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| Average Annual Return, Percent |
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11.16%
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12.63%
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13.64%
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| C000136667 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSSWX
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| C000136666 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSSYX
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| C000029583 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSFRX
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| C000029582 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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STBIX
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| C000143850 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSEYX
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| C000136662 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSGHX with load
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| Average Annual Return, Percent |
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25.13%
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6.21%
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7.45%
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| C000136664 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSGJX
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| C000136663 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSGLX
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| C000143853 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSGVX
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| C000155088 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSHQX
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| C000158901 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSMJX with load
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| Average Annual Return, Percent |
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6.37%
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5.18%
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10.32%
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| C000158902 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSMLX
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| C000158903 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSMKX
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| C000158904 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSMHX
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| C000232295 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSAHX
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| C000143868 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSBRX
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| C000143869 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSBSX
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| C000232296 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSAJX
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| C000143872 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSBWX
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| C000143873 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSBYX
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| C000232297 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSAZX
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| C000143876 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSCJX
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| C000143877 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSCKX
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| C000232298 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSAKX
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| C000143880 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSCNX
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| C000143881 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSCQX
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| C000232299 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSAOX
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| C000143884 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSDDX
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| C000143885 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSDEX
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| C000232290 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSAUX
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| C000143828 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSDJX
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| C000143829 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSDLX
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| C000232291 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSAWX
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| C000143832 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSDOX
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| C000143833 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSDQX
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| C000232292 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSAYX
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| C000143836 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSDWX
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| C000143837 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSDYX
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| C000232300 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSFPX
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| C000216582 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSFJX
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| C000216583 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSFKX
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| C000253750 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSGQX
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| C000253751 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSGNX
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| C000253749 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSGUX
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| C000232293 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSFQX
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| C000143856 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSFNX
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| C000143857 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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SSFOX
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| Without Sales Load [Member] | C000136668 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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6.72%
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(0.86%)
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1.51%
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| Without Sales Load [Member] | C000136670 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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7.15%
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(0.56%)
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1.82%
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| Without Sales Load [Member] | C000136669 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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7.15%
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(0.44%)
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1.91%
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| Without Sales Load [Member] | C000143852 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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7.17%
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(0.46%)
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1.93%
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| Without Sales Load [Member] | C000246124 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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13.23%
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19.21%
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| Without Sales Load [Member] | C000159454 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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33.77%
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3.97%
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8.19%
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| Without Sales Load [Member] | C000029581 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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17.63%
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14.18%
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14.56%
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| Without Sales Load [Member] | C000136665 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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17.32%
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13.85%
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14.25%
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| Without Sales Load [Member] | C000136667 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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17.66%
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14.17%
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14.56%
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| Without Sales Load [Member] | C000136666 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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17.81%
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14.36%
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14.74%
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| Without Sales Load [Member] | C000029583 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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17.10%
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13.67%
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14.06%
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| Without Sales Load [Member] | C000029582 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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17.51%
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14.07%
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14.45%
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| Without Sales Load [Member] | C000143850 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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17.81%
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14.35%
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14.77%
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| Without Sales Load [Member] | C000136662 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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32.06%
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7.36%
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8.04%
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| Without Sales Load [Member] | C000136664 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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32.50%
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7.72%
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8.36%
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| Without Sales Load [Member] | C000136663 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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32.63%
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7.83%
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8.48%
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| Without Sales Load [Member] | C000143853 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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32.67%
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7.85%
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8.53%
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| Without Sales Load [Member] | C000155088 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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23.41%
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13.80%
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10.65%
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| Without Sales Load [Member] | C000158901 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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12.26%
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6.32%
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10.92%
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| Without Sales Load [Member] | C000158902 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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12.68%
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|
6.61%
|
|
11.22%
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| Without Sales Load [Member] | C000158903 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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12.78%
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|
6.77%
|
|
11.37%
|
| Without Sales Load [Member] | C000158904 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
|
12.81%
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|
6.78%
|
|
11.41%
|
| Without Sales Load [Member] | C000232295 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
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12.68%
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|
5.11%
|
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7.51%
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| Without Sales Load [Member] | C000143868 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
|
12.94%
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|
5.35%
|
|
7.89%
|
| Without Sales Load [Member] | C000143869 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
|
13.17%
|
|
5.62%
|
|
8.05%
|
| Without Sales Load [Member] | C000232296 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
|
15.55%
|
|
5.93%
|
|
8.42%
|
| Without Sales Load [Member] | C000143872 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
|
15.93%
|
|
6.20%
|
|
8.81%
|
| Without Sales Load [Member] | C000143873 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
|
16.15%
|
|
6.46%
|
|
8.96%
|
| Without Sales Load [Member] | C000232297 |
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| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Average Annual Return, Percent |
|
17.56%
|
|
6.54%
|
|
9.01%
|
| Without Sales Load [Member] | C000143876 |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Average Annual Return, Percent |
|
17.90%
|
|
6.78%
|
|
9.37%
|
| Without Sales Load [Member] | C000143877 |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Average Annual Return, Percent |
|
18.09%
|
|
7.07%
|
|
9.55%
|
| Without Sales Load [Member] | C000232298 |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Average Annual Return, Percent |
|
18.68%
|
|
7.10%
|
|
9.48%
|
| Without Sales Load [Member] | C000143880 |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Average Annual Return, Percent |
|
19.02%
|
|
7.24%
|
|
9.82%
|
| Without Sales Load [Member] | C000143881 |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Average Annual Return, Percent |
|
19.22%
|
|
7.64%
|
|
10.03%
|
| Without Sales Load [Member] | C000232299 |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Average Annual Return, Percent |
|
19.64%
|
|
7.56%
|
|
9.90%
|
| Without Sales Load [Member] | C000143884 |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Average Annual Return, Percent |
|
19.93%
|
|
7.81%
|
|
10.29%
|
| Without Sales Load [Member] | C000143885 |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Average Annual Return, Percent |
|
20.19%
|
|
8.10%
|
|
10.44%
|
| Without Sales Load [Member] | C000232290 |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Average Annual Return, Percent |
|
20.38%
|
|
7.96%
|
|
10.15%
|
| Without Sales Load [Member] | C000143828 |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Average Annual Return, Percent |
|
20.72%
|
|
8.12%
|
|
10.48%
|
| Without Sales Load [Member] | C000143829 |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Average Annual Return, Percent |
|
20.93%
|
|
8.49%
|
|
10.70%
|
| Without Sales Load [Member] | C000232291 |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Average Annual Return, Percent |
|
20.66%
|
|
8.04%
|
|
10.20%
|
| Without Sales Load [Member] | C000143832 |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Average Annual Return, Percent |
|
21.03%
|
|
8.24%
|
|
10.58%
|
| Without Sales Load [Member] | C000143833 |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Average Annual Return, Percent |
|
21.30%
|
|
8.58%
|
|
10.75%
|
| Without Sales Load [Member] | C000232292 |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Average Annual Return, Percent |
|
20.62%
|
|
8.04%
|
|
10.16%
|
| Without Sales Load [Member] | C000143836 |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Average Annual Return, Percent |
|
21.17%
|
|
8.38%
|
|
10.60%
|
| Without Sales Load [Member] | C000143837 |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Average Annual Return, Percent |
|
21.31%
|
|
8.60%
|
|
10.72%
|
| Without Sales Load [Member] | C000232300 |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Average Annual Return, Percent |
|
20.60%
|
|
8.07%
|
13.84%
|
|
| Without Sales Load [Member] | C000216582 |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Average Annual Return, Percent |
|
20.98%
|
|
8.41%
|
14.20%
|
|
| Without Sales Load [Member] | C000216583 |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Average Annual Return, Percent |
|
21.12%
|
|
8.58%
|
14.38%
|
|
| Without Sales Load [Member] | C000253750 |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Average Annual Return, Percent |
23.78%
|
23.71%
|
|
|
|
|
| Without Sales Load [Member] | C000253751 |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Average Annual Return, Percent |
23.78%
|
23.71%
|
|
|
|
|
| Without Sales Load [Member] | C000253749 |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Average Annual Return, Percent |
23.47%
|
23.40%
|
|
|
|
|
| Without Sales Load [Member] | C000232293 |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Average Annual Return, Percent |
|
10.58%
|
|
4.11%
|
|
5.30%
|
| Without Sales Load [Member] | C000143856 |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Average Annual Return, Percent |
|
10.94%
|
|
4.29%
|
|
5.66%
|
| Without Sales Load [Member] | C000143857 |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Average Annual Return, Percent |
|
11.13%
|
|
4.60%
|
|
5.81%
|
| SPDR ETFs Index: Bloomberg U.S. Aggregate Bond Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
Bloomberg U.S. Aggregate Bond Index
|
|
|
|
|
| Average Annual Return, Percent |
|
7.30%
|
|
(0.36%)
|
|
2.01%
|
| SPDR ETFs Index: Bloomberg U.S. Aggregate Bond Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
Bloomberg U.S. Aggregate Bond Index
|
|
|
|
|
| Average Annual Return, Percent |
|
7.30%
|
|
(0.36%)
|
|
2.01%
|
| SPDR ETFs Index: Bloomberg U.S. Aggregate Bond Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
Bloomberg U.S. Aggregate Bond Index
|
|
|
|
|
| Average Annual Return, Percent |
|
7.30%
|
|
(0.36%)
|
|
2.01%
|
| SPDR ETFs Index: Bloomberg U.S. Aggregate Bond Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
Bloomberg U.S. Aggregate Bond Index
|
|
|
|
|
| Average Annual Return, Percent |
|
7.30%
|
|
(0.36%)
|
|
2.01%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
28.03%
|
|
|
|
| SSGA Index: MSCI All Country World ex USA Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
MSCI All Country World ex USA Index
|
|
|
|
|
| Average Annual Return, Percent |
|
32.39%
|
|
7.91%
|
|
8.41%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SSGA Index: MSCI All Country World ex USA Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
MSCI All Country World ex USA Index
|
|
|
|
|
| Average Annual Return, Percent |
|
32.39%
|
|
7.91%
|
|
8.41%
|
| SSGA Index: MSCI All Country World ex USA Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
MSCI All Country World ex USA Index
|
|
|
|
|
| Average Annual Return, Percent |
|
32.39%
|
|
7.91%
|
|
8.41%
|
| SSGA Index: MSCI All Country World ex USA Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
MSCI All Country World ex USA Index
|
|
|
|
|
| Average Annual Return, Percent |
|
32.39%
|
|
7.91%
|
|
8.41%
|
| SSGA Index: MSCI All Country World ex USA Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
MSCI All Country World ex USA Index
|
|
|
|
|
| Average Annual Return, Percent |
|
32.39%
|
|
7.91%
|
|
8.41%
|
| SSGA Index: MSCI All Country World ex USA Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
MSCI All Country World ex USA Index
|
|
|
|
|
| Average Annual Return, Percent |
|
32.39%
|
|
7.91%
|
|
8.41%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
|
14.82%
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
19.90%
|
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
19.90%
|
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
17.88%
|
15.07%
|
|
|
|
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
17.88%
|
15.07%
|
|
|
|
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
17.88%
|
15.07%
|
|
|
|
|
| SPDR ETFs Index: Bloomberg U.S. Aggregate Bond Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
Bloomberg U.S. Aggregate Bond Index
|
|
|
|
|
| Average Annual Return, Percent |
|
7.30%
|
|
(0.36%)
|
|
2.01%
|
| SPDR ETFs Index: Bloomberg U.S. Aggregate Bond Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
Bloomberg U.S. Aggregate Bond Index
|
|
|
|
|
| Average Annual Return, Percent |
|
7.30%
|
|
(0.36%)
|
|
2.01%
|
| SPDR ETFs Index: Bloomberg U.S. Aggregate Bond Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
Bloomberg U.S. Aggregate Bond Index
|
|
|
|
|
| Average Annual Return, Percent |
|
7.30%
|
|
(0.36%)
|
|
2.01%
|
| SSGA Index: State Street Balanced Composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Balanced Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
13.30%
|
19.53%
|
|
|
|
| State Street Institutional Investment Trust Index: MSCI Emerging Markets Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
MSCI Emerging Markets Index
|
|
|
|
|
| Average Annual Return, Percent |
|
33.57%
|
|
4.20%
|
|
8.42%
|
| State Street Institutional Investment Trust Index: MSCI ACWI ex USA Investable Market Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
MSCI ACWI ex USA Investable Market Index
|
|
|
|
|
| Average Annual Return, Percent |
|
31.96%
|
|
7.77%
|
|
8.41%
|
| State Street Institutional Investment Trust Index: MSCI ACWI ex USA Investable Market Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
MSCI ACWI ex USA Investable Market Index
|
|
|
|
|
| Average Annual Return, Percent |
|
31.96%
|
|
7.77%
|
|
8.41%
|
| State Street Institutional Investment Trust Index: MSCI ACWI ex USA Investable Market Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
MSCI ACWI ex USA Investable Market Index
|
|
|
|
|
| Average Annual Return, Percent |
|
31.96%
|
|
7.77%
|
|
8.41%
|
| State Street Institutional Investment Trust Index: MSCI ACWI ex USA Investable Market Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
MSCI ACWI ex USA Investable Market Index
|
|
|
|
|
| Average Annual Return, Percent |
|
31.96%
|
|
7.77%
|
|
8.41%
|
| SSGA Index: MSCI EAFE 100% Hedged to USD Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
MSCI EAFE 100% Hedged to USD Index
|
|
|
|
|
| Average Annual Return, Percent |
|
23.10%
|
|
13.94%
|
|
10.72%
|
| SPDR ETFs Index: Russell Small Cap Completeness Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
Russell Small Cap Completeness Index
|
|
|
|
|
| Average Annual Return, Percent |
|
12.67%
|
|
6.69%
|
|
11.40%
|
| SPDR ETFs Index: Russell Small Cap Completeness Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
Russell Small Cap Completeness Index
|
|
|
|
|
| Average Annual Return, Percent |
|
12.67%
|
|
6.69%
|
|
11.40%
|
| SPDR ETFs Index: Russell Small Cap Completeness Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
Russell Small Cap Completeness Index
|
|
|
|
|
| Average Annual Return, Percent |
|
12.67%
|
|
6.69%
|
|
11.40%
|
| SPDR ETFs Index: Russell Small Cap Completeness Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
Russell Small Cap Completeness Index
|
|
|
|
|
| Average Annual Return, Percent |
|
12.67%
|
|
6.69%
|
|
11.40%
|
| State Street Institutional Investment Trust Index: State Street Target Retirement 2025 Composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Target Retirement 2025 Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
13.13%
|
|
5.64%
|
|
8.09%
|
| State Street Institutional Investment Trust Index: State Street Target Retirement 2025 Composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Target Retirement 2025 Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
13.13%
|
|
5.64%
|
|
8.09%
|
| State Street Institutional Investment Trust Index: State Street Target Retirement 2025 Composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Target Retirement 2025 Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
13.13%
|
|
5.64%
|
|
8.09%
|
| State Street Institutional Investment Trust Index: State Street Target Retirement 2030 Composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Target Retirement 2030 Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
16.06%
|
|
6.45%
|
|
8.98%
|
| State Street Institutional Investment Trust Index: State Street Target Retirement 2030 Composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Target Retirement 2030 Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
16.06%
|
|
6.45%
|
|
8.98%
|
| State Street Institutional Investment Trust Index: State Street Target Retirement 2030 Composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Target Retirement 2030 Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
16.06%
|
|
6.45%
|
|
8.98%
|
| State Street Institutional Investment Trust Index: State Street Target Retirement 2035 Composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Target Retirement 2035 Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
18.03%
|
|
7.09%
|
|
9.56%
|
| State Street Institutional Investment Trust Index: State Street Target Retirement 2035 Composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Target Retirement 2035 Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
18.03%
|
|
7.09%
|
|
9.56%
|
| State Street Institutional Investment Trust Index: State Street Target Retirement 2035 Composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Target Retirement 2035 Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
18.03%
|
|
7.09%
|
|
9.56%
|
| State Street Institutional Investment Trust Index: State Street Target Retirement 2040 Composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Target Retirement 2040 Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
19.18%
|
|
7.66%
|
|
10.06%
|
| State Street Institutional Investment Trust Index: State Street Target Retirement 2040 Composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Target Retirement 2040 Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
19.18%
|
|
7.66%
|
|
10.06%
|
| State Street Institutional Investment Trust Index: State Street Target Retirement 2040 Composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Target Retirement 2040 Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
19.18%
|
|
7.66%
|
|
10.06%
|
| State Street Institutional Investment Trust Index: State Street Target Retirement 2045 Composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Target Retirement 2045 Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
20.08%
|
|
8.12%
|
|
10.47%
|
| State Street Institutional Investment Trust Index: State Street Target Retirement 2045 Composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Target Retirement 2045 Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
20.08%
|
|
8.12%
|
|
10.47%
|
| State Street Institutional Investment Trust Index: State Street Target Retirement 2045 Composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Target Retirement 2045 Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
20.08%
|
|
8.12%
|
|
10.47%
|
| State Street Institutional Investment Trust Index: State Street Target Retirement 2050 Composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Target Retirement 2050 Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
20.80%
|
|
8.51%
|
|
10.72%
|
| State Street Institutional Investment Trust Index: State Street Target Retirement 2050 Composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Target Retirement 2050 Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
20.80%
|
|
8.51%
|
|
10.72%
|
| State Street Institutional Investment Trust Index: State Street Target Retirement 2050 Composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Target Retirement 2050 Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
20.80%
|
|
8.51%
|
|
10.72%
|
| State Street Institutional Investment Trust Index: State Street Target Retirement 2055 Composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Target Retirement 2055 Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
21.15%
|
|
8.61%
|
|
10.77%
|
| State Street Institutional Investment Trust Index: State Street Target Retirement 2055 Composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Target Retirement 2055 Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
21.15%
|
|
8.61%
|
|
10.77%
|
| State Street Institutional Investment Trust Index: State Street Target Retirement 2055 Composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Target Retirement 2055 Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
21.15%
|
|
8.61%
|
|
10.77%
|
| State Street Institutional Investment Trust Index: State Street Target Retirement 2060 Composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Target Retirement 2060 Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
21.15%
|
|
8.61%
|
|
10.77%
|
| State Street Institutional Investment Trust Index: State Street Target Retirement 2060 Composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Target Retirement 2060 Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
21.15%
|
|
8.61%
|
|
10.77%
|
| State Street Institutional Investment Trust Index: State Street Target Retirement 2060 Composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Target Retirement 2060 Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
21.15%
|
|
8.61%
|
|
10.77%
|
| State Street Institutional Investment Trust Index: State Street Target Retirement 2065 composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Target Retirement 2065 Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
21.15%
|
|
8.61%
|
15.09%
|
|
| SPDR ETFs Index: S&P 500 Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
S&P 500 Index
|
|
|
|
|
| Average Annual Return, Percent |
|
17.88%
|
|
14.42%
|
19.90%
|
|
| State Street Institutional Investment Trust Index: State Street Target Retirement 2065 composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Target Retirement 2065 Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
21.15%
|
|
8.61%
|
15.09%
|
|
| State Street Institutional Investment Trust Index: State Street Target Retirement 2065 composite Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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State Street Target Retirement 2065 Composite Index
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| Average Annual Return, Percent |
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21.15%
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|
8.61%
|
15.09%
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| SPDR ETFs Index: State Street Target Retirement 2070 Composite Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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State Street Target Retirement 2070 Composite Index
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| Average Annual Return, Percent |
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21.15%
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| SPDR ETFs Index: State Street Target Retirement 2070 Composite Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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State Street Target Retirement 2070 Composite Index
|
|
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|
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| Average Annual Return, Percent |
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21.15%
|
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| SPDR ETFs Index: State Street Target Retirement 2070 Composite Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
|
State Street Target Retirement 2070 Composite Index
|
|
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|
|
| Average Annual Return, Percent |
|
21.15%
|
|
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| State Street Institutional Investment Trust Index: State Street Target Retirement Composite Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
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State Street Target Retirement Composite Index
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| Average Annual Return, Percent |
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11.14%
|
|
4.60%
|
|
5.84%
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| State Street Institutional Investment Trust Index: State Street Target Retirement Composite Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
|
State Street Target Retirement Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
11.14%
|
|
4.60%
|
|
5.84%
|
| State Street Institutional Investment Trust Index: State Street Target Retirement Composite Index |
|
|
|
|
|
|
| Average Annual Return [Line Items] |
|
|
|
|
|
|
| Line Graph and Table Measure Name |
|
State Street Target Retirement Composite Index
|
|
|
|
|
| Average Annual Return, Percent |
|
11.14%
|
|
4.60%
|
|
5.84%
|