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Investment in Transmission Affiliates (Tables) - ATC | 12 Months Ended
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Dec. 31, 2017
Investment in Transmission Affiliates |
Schedule of changes to our investment in ATC | The following tables provide a reconciliation of the changes in our investments in ATC and ATC Holdco:
|  | 2017
(in millions) |  | ATC |  | ATC Holdco |  | Total
Balance at January 1 |  | $ | 1,443.9 |  |  | $ | — |  |  | $ | 1,443.9 |
Add: Earnings (loss) from equity method investment |  | 166.0 |  |  | (11.7 | ) |  | 154.3 |
Add: Capital contributions |  | 60.3 |  |  | 49.3 |  |  | 109.6 |
Less: Distributions |  | 154.2 |  | * | — |  |  | 154.2 |
Less: Other |  | 0.2 |  |  | — |  |  | 0.2 |
Balance at December 31 |  | $ | 1,515.8 |  |  | $ | 37.6 |  |  | $ | 1,553.4 |
* | Of this amount, $39.9 million was recorded as a receivable from ATC in other current assets at December 31, 2017.
|  | ATC
(in millions) |  | 2016 |  | 2015
Balance at January 1 |  | $ | 1,380.9 |  |  | $ | 424.1 |
Add: Earnings from equity method investment |  | 146.5 |  |  | 96.1 |
Add: Capital contributions |  | 42.3 |  |  | 8.7 |
Add: Acquisition of Integrys's investment in ATC |  | (1.0 | ) |  | 541.5 |
Add: Equity method goodwill from the acquisition of Integrys (1) |  | 10.4 |  |  | 395.8 |
Less: Distributions |  | 135.1 |  | (2) | 85.1 |
Less: Other |  | 0.1 |  |  | 0.2 |
Balance at December 31 |  | $ | 1,443.9 |  |  | $ | 1,380.9 |
(1) | Represents the purchase price allocated to Integrys's investment in ATC in excess of the recorded value.
(2) | Of this amount, $35.2 million was recorded as a receivable from ATC in other current assets at December 31, 2016.
Schedule of significant transactions with ATC | The following table summarizes our significant related party transactions with ATC during the years ended December 31:
(in millions) |  | 2017 |  | 2016 |  | 2015
Charges to ATC for services and construction |  | $ | 17.1 |  |  | $ | 18.5 |  |  | $ | 15.4 |
Charges from ATC for network transmission services |  | 349.3 |  |  | 357.3 |  |  | 289.2 |
Refund from ATC per FERC ROE order |  | (28.3 | ) |  | — |  |  | — |
Schedule of receivables and payables with ATC | As of December 31, 2017 and 2016, our balance sheets included the following receivables and payables related to ATC:
(in millions) |  | 2017 |  | 2016
Accounts receivable |  |  |  |
Services provided to ATC |  | $ | 1.5 |  |  | $ | 2.2 |
Other current assets |  |  |  |
Dividends receivable from ATC |  | 39.9 |  |  | 35.2 |
Accounts payable |  |  |  |
Services received from ATC |  | 31.2 |  |  | 28.7 |
Schedule of summarized income statement data for ATC | Summarized financial data for ATC is included in the tables below:
(in millions) |  | 2017 |  | 2016 |  | 2015
Income statement data |  |  |  |  |  |
Revenues |  | $ | 721.7 |  |  | $ | 650.8 |  |  | $ | 615.8 |
Operating expenses |  | 345.0 |  |  | 322.5 |  |  | 319.3 |
Other expense |  | 104.1 |  |  | 95.5 |  |  | 96.1 |
Net income |  | $ | 272.6 |  |  | $ | 232.8 |  |  | $ | 200.4 |
Schedule of summarized balance sheet data for ATC |
(in millions) |  | December 31, 2017 |  | December 31, 2016
Balance sheet data |  |  |  |
Current assets |  | $ | 87.7 |  |  | $ | 75.8 |
Noncurrent assets |  | 4,598.9 |  |  | 4,312.9 |
Total assets |  | $ | 4,686.6 |  |  | $ | 4,388.7 |
Current liabilities |  | $ | 767.2 |  |  | $ | 495.1 |
Long-term debt |  | 1,790.6 |  |  | 1,865.3 |
Other noncurrent liabilities |  | 240.3 |  |  | 271.5 |
Shareholders' equity |  | 1,888.5 |  |  | 1,756.8 |
Total liabilities and shareholders' equity |  | $ | 4,686.6 |  |  | $ | 4,388.7 |

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