XML 44 R47.htm IDEA: XBRL DOCUMENT
v3.20.1

INVESTMENT IN TRANSMISSION AFFILIATES (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2020
Investment in transmission affiliates |
Schedule of changes to our investments in transmission affiliates | The following tables provide a reconciliation of the changes in our investments in ATC and ATC Holdco:
|  | Three Months Ended March 31, 2020
(in millions) |  | ATC |  | ATC Holdco |  | Total
Balance at beginning of period |  | $ | 1,684.7 |  |  | $ | 36.1 |  |  | $ | 1,720.8 |
Add: Earnings from equity method investment |  | 39.6 |  |  | 0.2 |  |  | 39.8 |
Add: Capital contributions |  | 3.0 |  |  | — |  |  | 3.0 |
Less: Distributions |  | 40.6 |  |  | — |  |  | 40.6 |
Less: Return of capital |  | — |  |  | 5.3 |  |  | 5.3 |
Balance at end of period |  | $ | 1,686.7 |  |  | $ | 31.0 |  |  | $ | 1,717.7 |
|  | Three Months Ended March 31, 2019
(in millions) |  | ATC |  | ATC Holdco |  | Total
Balance at beginning of period |  | $ | 1,625.3 |  |  | $ | 40.0 |  |  | $ | 1,665.3 |
Add: Earnings (loss) from equity method investment |  | 36.5 |  |  | (0.4 | ) |  | 36.1 |
Add: Capital contributions |  | 3.0 |  |  | 0.4 |  |  | 3.4 |
Less: Distributions |  | 34.2 |  |  | — |  |  | 34.2 |
Balance at end of period |  | $ | 1,630.6 |  |  | $ | 40.0 |  |  | $ | 1,670.6 |
ATC |
Investment in transmission affiliates |
Schedule of significant transactions with ATC | The following table summarizes our significant related party transactions with ATC:
|  | Three Months Ended March 31
(in millions) |  | 2020 |  | 2019
Charges to ATC for services and construction |  | $ | 6.0 |  |  | $ | 4.0 |
Charges from ATC for network transmission services |  | 86.9 |  |  | 87.1 |
Schedule of receivables and payables with ATC | Our balance sheets included the following receivables and payables for services received from or provided to ATC:
(in millions) |  | March 31, 2020 |  | December 31, 2019
Accounts receivable for services provided to ATC |  | $ | 2.6 |  |  | $ | 3.5 |
Accounts payable for services received from ATC |  | 29.3 |  |  | 29.0 |
Amounts due from ATC for transmission infrastructure upgrades * |  | 2.3 |  |  | 2.8 |
* In connection with WPS's construction of its two new solar projects, Badger Hollow I and Two Creeks, WPS was required to initially fund the construction of the transmission infrastructure upgrades needed for the new generation. ATC owns these transmission assets and will reimburse WPS for these costs after the new generation has been placed in service.
Schedule of summarized income statement data for ATC | Summarized financial data for ATC is included in the tables below:
|  | Three Months Ended March 31
(in millions) |  | 2020 |  | 2019
Income statement data |  |  |  |
Operating revenues |  | $ | 186.8 |  |  | $ | 177.7 |
Operating expenses |  | 95.2 |  |  | 90.4 |
Other expense, net |  | 28.5 |  |  | 28.8 |
Net income |  | $ | 63.1 |  |  | $ | 58.5 |
Schedule of summarized balance sheet data for ATC |
(in millions) |  | March 31, 2020 |  | December 31, 2019
Balance sheet data |  |  |  |
Current assets |  | $ | 82.4 |  |  | $ | 84.7 |
Noncurrent assets |  | 5,283.2 |  |  | 5,244.2 |
Total assets |  | $ | 5,365.6 |  |  | $ | 5,328.9 |
Current liabilities |  | $ | 526.3 |  |  | $ | 502.6 |
Long-term debt |  | 2,313.0 |  |  | 2,312.8 |
Other noncurrent liabilities |  | 307.9 |  |  | 298.9 |
Shareholders' equity |  | 2,218.4 |  |  | 2,214.6 |
Total liabilities and shareholders' equity |  | $ | 5,365.6 |  |  | $ | 5,328.9 |

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates. + References No definition available. + Details
Name: | us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular reconciliation of beginning and ending balances of investments accounted for under the equity method of accounting. + References No definition available. + Details
Name: | wec_ScheduleOfChangesToEquityMethodInvestmentsTableTextBlock
Namespace Prefix: | wec_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of summarized balance sheet data related to significant equity method investments. + References No definition available. + Details
Name: | wec_ScheduleOfEquityMethodInvestmentsSummarizedBalanceSheetDataTableTextBlock
Namespace Prefix: | wec_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of summarized income statement data related to significant equity method investments. + References No definition available. + Details
Name: | wec_ScheduleOfEquityMethodInvestmentsSummarizedIncomeStatementDataTableTextBlock
Namespace Prefix: | wec_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of balance sheet information related to transactions entered into with related parties. + References No definition available. + Details
Name: | wec_ScheduleOfRelatedPartyTransactionsBalanceSheetInformationTableTextBlock
Namespace Prefix: | wec_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=wec_TransmissionAffiliateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |