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Organization, Summary of Significant Accounting Policies and Recent Developments (Tables) | 12 Months Ended
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Dec. 31, 2013
Accounting Policies [Abstract] |
Range of depreciation rates | These rates have been approved by the NJBPU, DEPSC or PAPUC:
Source of Supply | 1.15% - 3.44% | Transmission and Distribution (T&D):
Pumping | 2.87% - 5.39% | T&D – Mains | 1.10% - 3.13%
Water Treatment | 1.65% - 7.09% | T&D – Services | 2.12% - 3.16%
General Plant | 2.08% - 17.84% | T&D – Other | 1.61% - 4.63%
Allowance for Funds Used During Construction Rates | The AFUDC rates for the years ended December 31, 2013, 2012 and 2011 for Middlesex and Tidewater are as follows:
|  | 2013 |  |  | 2012 |  |  | 2011 |
Middlesex |  |  | 7.34% |  |  |  | 7.34% |  |  |  | 7.54% |
Tidewater |  |  | 7.91% |  |  |  | 7.91% |  |  |  | 8.24% |

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