XML 167 R92.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Common Equity - Dividend Restrictions (Details) $ in Billions | 12 Months Ended
--- | ---
Dec. 31, 2016 USD ($) period | Dec. 31, 2015
Dividend Payment Restrictions [Line Items] |  |
Junior notes minimum interest deferral payment period (in periods) | period | 1 |
Junior notes maximum interest payment deferral period (in years) | 10 years |
Restricted net assets of subsidiaries and undistributed earnings of equity method investments | $ | $ 6.3 |
Percentage of restricted net assets of subsidiaries and equity method investments that triggers dividend restriction disclosures | 25.00% |
WE | Serial preferred stock, 3.60% series redeemable |  |
Dividend Payment Restrictions [Line Items] |  |
Preferred Stock, dividend rate (as a percent) | 3.60% | 3.60%
WE | Serial preferred stock, 3.60% series redeemable | Common stock equity to total capitalization is less than 25% |  |
Dividend Payment Restrictions [Line Items] |  |
Percentage of net income for which dividends can be declared | 75.00% |
WE | Serial preferred stock, 3.60% series redeemable | Common stock equity to total capitalization is less than 20% |  |
Dividend Payment Restrictions [Line Items] |  |
Percentage of net income for which dividends can be declared | 50.00% |
WE | Minimum | Public Service Commission of Wisconsin |  |
Dividend Payment Restrictions [Line Items] |  |
Common equity ratio required to be maintained (as a percent) | 51.00% |
WE | Maximum | Serial preferred stock, 3.60% series redeemable | Common stock equity to total capitalization is less than 25% |  |
Dividend Payment Restrictions [Line Items] |  |
Percentage of common equity to total capitalization required to be maintained | 25.00% |
WE | Maximum | Serial preferred stock, 3.60% series redeemable | Common stock equity to total capitalization is less than 20% |  |
Dividend Payment Restrictions [Line Items] |  |
Percentage of common equity to total capitalization required to be maintained | 20.00% |
WG | Minimum | Public Service Commission of Wisconsin |  |
Dividend Payment Restrictions [Line Items] |  |
Common equity ratio required to be maintained (as a percent) | 49.50% |
WPS | Minimum | Public Service Commission of Wisconsin |  |
Dividend Payment Restrictions [Line Items] |  |
Common equity ratio required to be maintained (as a percent) | 51.00% |

X
- Definition Amount of restricted net assets of consolidated and unconsolidated subsidiaries as of the end of the most recently completed fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(e)(3)(ii)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The percentage rate used to calculate dividend payments on preferred stock. + References No definition available. + Details
Name: | us-gaap_PreferredStockDividendRatePercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the common equity ratio which is required to be maintained + References No definition available. + Details
Name: | wec_CommonEquityRatiotobeMaintained
Namespace Prefix: | wec_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the percentage of common stockholders equity to total capitalization for dividend payment restrictions. + References No definition available. + Details
Name: | wec_DividendPaymentRestrictionsPercentageofCommonStockholdersEquitytoTotalCapitalization
Namespace Prefix: | wec_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of periods for which interest payments on junior subordinated notes can be deferred. + References No definition available. + Details
Name: | wec_Juniornotesminimuminterestdeferralpaymentperiodinperiods
Namespace Prefix: | wec_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the number of consecutive years for which interest payments on junior subordinated notes can be deferred. + References No definition available. + Details
Name: | wec_Maximuminterestpaymentdeferralperiod
Namespace Prefix: | wec_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of net income for which dividends can be declared if certain common stock equity to total capitalization ratios are not maintained. + References No definition available. + Details
Name: | wec_Percentageofnetincomeforwhichdividendscanbedeclared
Namespace Prefix: | wec_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of restricted net assets of consolidated and unconsolidated subsidiaries and equity in undistributed earnings of investees accounted for by the equity method to consolidated net assets of the registrant that triggers disclosure requirements for subsidiary dividend restrictions. + References No definition available. + Details
Name: | wec_Percentageofrestrictednetassetsofsubsidiariesandequitymethodinvestmentsthattriggersdividendrestrictiondisclosures
Namespace Prefix: | wec_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition [Line Items] for Schedule itemizing dividend payment restrictions imposed by regulatory authorities. + References No definition available. + Details
Name: | wec_ScheduleofDividendPaymentRestrictionsLineItems
Namespace Prefix: | wec_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=wec_WisconsinelectricMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=wec_SerialPreferredStock360SeriesRedeemableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementScenarioAxis=wec_Commonstockequitytototalcapitalizationislessthan25Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementScenarioAxis=wec_Commonstockequitytototalcapitalizationislessthan20Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAgencyAxis=wec_PublicServiceCommissionofWisconsinMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=wec_WisconsinGasLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=wec_WisconsinPublicServiceCorporationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |