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Goodwill (Text Block)
 3 Months Ended
Mar. 31, 2015
Goodwill Excluding Non Goodwill Intangibles [Abstract]  
Goodwill Disclosure [Text Block]
Goodwill

The following table reflects goodwill allocated to each reporting segment as of March 31, 2015:

 
Electricity
 
Gas
 
Water
 
Total Company
 
(in thousands)
Balance at January 1, 2015
 
 
 
 
 
 
 
Goodwill before impairment
$
449,668

 
$
359,485

 
$
382,655

 
$
1,191,808

Accumulated impairment losses
(393,981
)
 
—

 
(297,007
)
 
(690,988
)
Goodwill, net
55,687

 
359,485

 
85,648

 
500,820

 
 
 
 
 
 
 
 
Effect of change in exchange rates
(2,909
)
 
(28,826
)
 
(6,367
)
 
(38,102
)
 
 
 
 
 
 
 
 
Balance at March 31, 2015
 
 
 
 
 
 
 
Goodwill before impairment
413,862

 
330,659

 
344,253

 
1,088,774

Accumulated impairment losses
(361,084
)
 
—

 
(264,972
)
 
(626,056
)
Goodwill, net
$
52,778

 
$
330,659

 
$
79,281

 
$
462,718


Refer to Note 1 for a description of our reporting units and the methods used to determine the fair values of our reporting units and to determine the amount of any goodwill impairment.

Goodwill and accumulated impairment losses associated with our international subsidiaries are recorded in their respective functional currencies; therefore, the carrying amounts of these balances increase or decrease, with a corresponding change in accumulated OCI, due to changes in foreign currency exchange rates.