XML 48 R37.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Business Segment Information (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2017
Segment Reporting [Abstract] |
Schedule Of Operating Income Derived From Revenues And Expenses By Segment | The following table provides information about business segments. NiSource uses operating income as its primary measurement for each of the reported segments and makes decisions on finance, dividends and taxes at the corporate level on a consolidated basis. Segment revenues include intersegment sales to affiliated subsidiaries, which are eliminated in consolidation. Affiliated sales are recognized on the basis of prevailing market, regulated prices or at levels provided for under contractual agreements. Operating income is derived from revenues and expenses directly associated with each segment.
| Three Months Ended March 31,
(in millions) | 2017 |  | 2016
Gross Revenues |  |  |
Gas Distribution Operations |  |  |
Unaffiliated | $ | 1,176.3 |  |  | $ | 1,040.8 |
Intersegment | 3.5 |  |  | 3.2 |
Total | 1,179.8 |  |  | 1,044.0 |
Electric Operations |  |  |
Unaffiliated | 421.7 |  |  | 392.1 |
Intersegment | 0.2 |  |  | 0.2 |
Total | 421.9 |  |  | 392.3 |
Corporate and Other |  |  |
Unaffiliated | 0.6 |  |  | 3.7 |
Intersegment | 119.6 |  |  | 98.8 |
Total | 120.2 |  |  | 102.5 |
Eliminations | (123.3 | ) |  | (102.2 | )
Consolidated Gross Revenues | $ | 1,598.6 |  |  | $ | 1,436.6 |
Operating Income (Loss) |  |  |
Gas Distribution Operations | $ | 340.7 |  |  | $ | 314.9 |
Electric Operations | 77.0 |  |  | 70.3 |
Corporate and Other | (1.2 | ) |  | (3.8 | )
Consolidated Operating Income | $ | 416.5 |  |  | $ | 381.4 |

X
- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8813-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8736-108599 + Details
Name: | us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_SegmentReportingAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration