XML 62 R46.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Goodwill (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of changes to goodwill balances by segment | The following table shows changes to our goodwill balances by segment during the years ended December 31, 2017 and 2016:
|  | Wisconsin |  | Illinois |  | Other States |  | Non-Utility Energy Infrastructure |  | Total
(in millions) |  | 2017 |  | 2016 |  | 2017 |  | 2016 |  | 2017 |  | 2016 |  | 2017 |  | 2016 |  | 2017 |  | 2016
Goodwill balance as of January 1 |  | $ | 2,104.3 |  |  | $ | 2,109.5 |  |  | $ | 758.7 |  |  | $ | 731.2 |  |  | $ | 183.2 |  |  | $ | 182.8 |  |  | $ | — |  |  | $ | — |  |  | $ | 3,046.2 |  |  | $ | 3,023.5 |
Adjustment to Integrys purchase price allocation |  | — |  |  | (5.2 | ) |  | — |  |  | 27.5 |  |  | — |  |  | 0.4 |  |  | — |  |  | — |  |  | — |  |  | 22.7 |
Acquisition of Bluewater (1) |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 7.3 |  |  | — |  |  | 7.3 |  |  | — |
Goodwill balance as of December 31 (2) |  | $ | 2,104.3 |  |  | $ | 2,104.3 |  |  | $ | 758.7 |  |  | $ | 758.7 |  |  | $ | 183.2 |  |  | $ | 183.2 |  |  | $ | 7.3 |  |  | $ | — |  |  | $ | 3,053.5 |  |  | $ | 3,046.2 |
(1) | See Note 2, Acquisitions, for more information on the acquisition of Bluewater.
(2) | We had no accumulated impairment losses related to our goodwill as of December 31, 2017.

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

X
- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
Name: | us-gaap_ScheduleOfGoodwillTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration