|
Condensed Consolidating Financial Statements (Details) (USD $)
In Millions, unless otherwise specified |
Mar. 31, 2015
|
Dec. 31, 2014
|
Apr. 17, 2009
|
Nov. 17, 2010
|
|---|---|---|---|---|
| Cal Water | ||||
| Long-term debt | ||||
| Ownership interest (as a percent) | 100.00% | 100.00% | ||
| All Other Subsidiaries | ||||
| Long-term debt | ||||
| Ownership interest (as a percent) | 100.00% | 100.00% | ||
| First Mortgage Bonds, 5.875% due 2019 | Cal Water | ||||
| Long-term debt | ||||
| Debt issued | $ 100 | |||
| Interest rate (as a percent) | 5.875% | |||
| First Mortgage Bonds, 5.500% due 2040 | Cal Water | ||||
| Long-term debt | ||||
| Debt issued | $ 100 | |||
| Interest rate (as a percent) | 5.50% |