XML 34 R40.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Segment Information - Summarized Financial Information (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Segment Reporting Information [Line Items] |  |  |  |
Revenues | $ 1,474,377 | $ 1,386,162 | $ 3,060,087 | $ 2,714,926
Operating income (loss) | 117,174 | 98,345 | 236,465 | 177,136
Depreciation | 33,040 | 29,376 | 64,920 | 58,402
Electric Power [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 1,046,379 | 1,006,073 | 2,227,362 | 1,938,286
Operating income (loss) | 120,809 | 110,735 | 253,359 | 224,949
Depreciation | 15,776 | 13,342 | 30,699 | 26,710
Natural Gas and Pipeline [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 385,942 | 337,595 | 744,874 | 694,562
Operating income (loss) | 27,644 | 15,055 | 38,001 | 4,520
Depreciation | 11,335 | 10,634 | 22,600 | 20,990
Fiber Optic Licensing and Other [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 42,056 | 42,494 | 87,851 | 82,078
Operating income (loss) | 14,301 | 15,423 | 31,184 | 29,963
Depreciation | 4,230 | 3,727 | 8,281 | 7,402
Corporate and Non-Allocated Costs [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Operating income (loss) | (45,580) | (42,868) | (86,079) | (82,296)
Depreciation | $ 1,699 | $ 1,673 | $ 3,340 | $ 3,300

X
- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
Name: | us-gaap_Depreciation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The net result for the period of deducting operating expenses from operating revenues. + References No definition available. + Details
Name: | us-gaap_OperatingIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(d)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
Name: | us-gaap_SalesRevenueServicesNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration