Business and Organization (Details)
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3 Months Ended | 6 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended | ||
---|---|---|---|---|---|---|---|---|---|---|
Mar. 31, 2012
Entity
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Jun. 30, 2012
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Jun. 30, 2011
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Dec. 31, 2011
Entity
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Mar. 31, 2012
Electric Power Division [Member]
CANADA
Entity
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Dec. 31, 2011
Electric Power Division [Member]
CANADA
Entity
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Jun. 30, 2012
Electric Power Division [Member]
UNITED STATES
Entity
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Mar. 31, 2012
Electric Power Division [Member]
UNITED STATES
Entity
|
Dec. 31, 2011
Electric Power Division [Member]
UNITED STATES
Entity
|
Mar. 31, 2012
Natural Gas and Pipeline Division [Member]
UNITED STATES
Entity
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Additional Business and Organization (Textual) [Abstract] | ||||||||||
Number of business acquisitions completed | 3 | 5 | 1 | 3 | 1 | 1 | 1 | 1 | ||
Business and Organization (Textual) [Abstract] | ||||||||||
Fiber Optic Licensing Terms, Minimum in years | 5 years | 5 years | ||||||||
Fiber Optic Licensing Terms, Maximum in years | 25 years | 25 years |