XML 43 R30.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Income Taxes: (Details) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
GSWC |  |  |  |
Effective income tax rate |  |  |  |
ETRs (as a percent) | 38.20% | 42.70% | 38.30% | 41.60%

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