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Business and Organization (Details)
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12 Months Ended | ||
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Dec. 31, 2011
Entity
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Dec. 31, 2010
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Dec. 31, 2009
Entity
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| Additional Business and Organization (Textual) [Abstract] | |||
| Number of business acquisitions completed | 5 | ||
| Number of other businesses acquired | 3 | ||
| 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 | |
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Electric Power Division [Member] | CANADA
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| Additional Business and Organization (Textual) [Abstract] | |||
| Number of business acquisitions completed | 3 | ||
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Electric Power Division [Member] | UNITED STATES
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| Additional Business and Organization (Textual) [Abstract] | |||
| Number of business acquisitions completed | 1 | ||
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Natural Gas and Pipeline Division [Member] | AUSTRALIA
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| Additional Business and Organization (Textual) [Abstract] | |||
| Number of business acquisitions completed | 1 | ||
| X | ||||||||||
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- Details
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- Details
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| X | ||||||||||
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- Definition
Licensing terms maximum in years. No definition available.
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- Definition
Licensing terms minimum in years. No definition available.
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| X | ||||||||||
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- Definition
Number of other businesses acquired. No definition available.
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| X | ||||||||||
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- Definition
The number of businesses acquired by the entity during the period. No definition available.
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