XML 132 R57.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Commitments and Contingencies (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract] |
Schedule of minimum future commitments related to purchase obligations | The following table shows our minimum future commitments related to these purchase obligations as of December 31, 2016, including those of our subsidiaries.
|  |  |  |  |  | Payments Due By Period
(in millions) |  | Date Contracts Extend Through |  | Total Amounts Committed |  | 2017 |  | 2018 |  | 2019 |  | 2020 |  | 2021 |  | Later Years
Electric utility: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nuclear |  | 2033 |  | $ | 9,599.8 |  |  | $ | 415.3 |  |  | $ | 420.1 |  |  | $ | 445.4 |  |  | $ | 475.1 |  |  | $ | 501.1 |  |  | $ | 7,342.8 |
Purchased power |  | 2027 |  | 693.3 |  |  | 111.3 |  |  | 75.9 |  |  | 66.2 |  |  | 66.3 |  |  | 63.9 |  |  | 309.7 |
Coal supply and transportation |  | 2019 |  | 455.0 |  |  | 269.4 |  |  | 140.3 |  |  | 45.3 |  |  | — |  |  | — |  |  | — |
Natural gas utility supply and transportation |  | 2028 |  | 1,229.4 |  |  | 341.7 |  |  | 285.5 |  |  | 237.5 |  |  | 159.7 |  |  | 78.6 |  |  | 126.4 |
Total |  |  |  | $ | 11,977.5 |  |  | $ | 1,137.7 |  |  | $ | 921.8 |  |  | $ | 794.4 |  |  | $ | 701.1 |  |  | $ | 643.6 |  |  | $ | 7,778.9 |
Schedule of minimum future payments under noncancelable operating leases | Future minimum payments under noncancelable operating leases are payable as follows:
Year Ending December 31 |  | Payments (in millions)
2017 |  | $ | 9.9 |
2018 |  | 8.8 |
2019 |  | 5.9 |
2020 |  | 5.3 |
2021 |  | 5.5 |
Later years |  | 60.1 |
Total |  | $ | 95.5 |
Schedule of regulatory assets and reserves related to manufactured gas plants | We have established the following regulatory assets and reserves related to manufactured gas plant sites as of December 31:
(in millions) |  | 2016 |  | 2015
Regulatory assets |  | $ | 702.7 |  |  | $ | 697.0 |
Reserves for future remediation |  | 633.4 |  |  | 628.0 |

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

X
- Definition Tabular disclosure of a lessee's leasing arrangements including: (1) the basis on which contingent rental payments are determined, (2) the existence and terms of renewal or purchase options and escalation clauses, (3) restrictions imposed by lease arrangements, such as those concerning dividends, additional debt, and further leasing, (4) rent holidays, rent concessions, or leasehold improvement incentives and unusual provisions or conditions. Disclosure may also include the specific period used to amortize material leasehold improvements made at the inception of the lease or during the lease term. Additionally, for operating leases having initial or remaining noncancelable lease terms in excess of one year: (a) future minimum rental payments required as of the date of the latest balance sheet presented, in the aggregate and for each of the five succeeding fiscal years, (b) the total of minimum rentals to be received in the future under noncancelable subleases as of the date of the latest balance sheet presented, and (c) for all operating leases, rental expense for each period for which an income statement is presented, with separate amounts for minimum rentals, contingent rentals, and sublease rentals. Rental payments under leases with terms of a month or less that were not renewed need not be included. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 1,3) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6452660&loc=d3e36991-112694 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 + Details
Name: | us-gaap_OperatingLeasesOfLesseeDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of information about obligations resulting from other commitments. + References No definition available. + Details
Name: | us-gaap_OtherCommitmentsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of unconditional purchase obligations, including the nature and significant terms of an unconditional purchase obligation; the amount of the fixed and determinable portion of the obligation as of the date of the latest balance sheet presented in the aggregate and, if determinable, for each of the five succeeding fiscal years; the amount purchased under the obligation for the reporting period. + References No definition available. + Details
Name: | wec_UnconditionalPurchaseObligationsDisclosureTableTextBlock
Namespace Prefix: | wec_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration