XML 36 R22.htm IDEA: XBRL DOCUMENT v2.4.0.6
Retirement Plan And Other Post-Retirement Benefits (Tables)
 3 Months Ended
Dec. 31, 2012
Retirement Plan And Other Post-Retirement Benefits [Abstract]  
Components Of Net Periodic Benefit Cost

 

 

 

 

 

 

 

 

Three months ended December 31,

 

 

 

 

 

 

 

 

Retirement Plan

Other Post-Retirement Benefits

 

 

 

 

 

 

 

 

 

2012

 

2011

 

2012

 

2011

 

 

 

 

 

 

 

 

Service Cost
$
3,961 

 
$
3,551 

 
$
1,176 

 
$
1,004 

Interest Cost
9,124 

 
10,381 

 
4,803 

 
5,329 

Expected Return on Plan Assets
(14,336)

 
(14,925)

 
(8,218)

 
(7,243)

Amortization of Prior Service Cost
60 

 
67 

 
(534)

 
(534)

Amortization of Transition Amount

-

 

-

 
2 

 
3 

Amortization of Losses
13,194 

 
9,904 

 
5,223 

 
6,014 

Net Amortization and Deferral for

 

 

 

 

 

 

 

  Regulatory Purposes (Including

 

 

 

 

 

 

 

  Volumetric Adjustments) (1)
(3,682)

 
(1,802)

 
2,703 

 
2,132 

 

 

 

 

 

 

 

 

 
$
8,321 

 
$
7,176 

 
$
5,155 

 
$
6,705 

 

(1)    The Company’s policy is to record retirement plan and other post-retirement benefit costs in the Utility segment on a volumetric

     basis to reflect  the fact that  the Utility segment  experiences higher  throughput of  natural gas in the winter months and lower

     throughput of natural gas in the summer months.