XML 31 R38.htm IDEA: XBRL DOCUMENT v2.4.0.8
REGULATION - REGULATORY FILINGS (Details) (USD $)
 9 Months Ended 6 Months Ended 9 Months Ended
Jun. 30, 2013
Sep. 30, 2012
Jun. 30, 2013
BGSS [Member]
Jun. 30, 2013
CIP [Member]
Jun. 30, 2013
SAFE-Safety Acceleration and Facility Enhancement Program [Member]
Jun. 30, 2013
AIP I and AIP II [Member]
Jun. 30, 2013
EE-Rebates and Incentives [Member]
Jun. 30, 2013
SBC [Member]
Jun. 30, 2013
SBC [Member]
Jun. 30, 2013
Deferred Superstorm Sandy Costs [Member]
Sep. 30, 2012
Deferred Superstorm Sandy Costs [Member]
Schedule of Regulatory [Line Items]                      
Capital investments approved by the board of public utilities         $ 130,000,000   $ 85,000,000        
Weighted average cost of capital             6.90%        
Annual recovery amount increase (decrease) proposed to the board of public utilities           6,900,000          
Annual recovery amount increase approved by the Board of Public Utilities           6,500,000          
Rate increase approved by the Board of Public Utilities     (5.20%) (1.00%)     1.70%        
Increase (decrease) in regulatory assets and liabilities               9,800,000 15,600,000    
Regulatory assets $ 460,232,000 $ 441,263,000               $ 14,916,000 $ 0