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Investment in American Transmission Company (Tables) - ATC | 12 Months Ended
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Dec. 31, 2016
Investment in ATC |
Schedule of changes to our investment in ATC | The following table shows changes to our investment in ATC during the years ended December 31:
(in millions) |  | 2016 |  | 2015 |  | 2014
Balance at beginning of period |  | $ | 1,380.9 |  |  | $ | 424.1 |  |  | $ | 402.7 |
Add: Earnings from equity method investment |  | 146.5 |  |  | 96.1 |  |  | 66.0 |
Add: Capital contributions |  | 42.3 |  |  | 8.7 |  |  | 13.1 |
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 |  |  | 57.5 |
Less: Other |  | 0.1 |  |  | 0.2 |  |  | 0.2 |
Balance at end of period |  | $ | 1,443.9 |  |  | $ | 1,380.9 |  |  | $ | 424.1 |
(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 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) |  | 2016 |  | 2015 |  | 2014
Charges to ATC for services and construction |  | $ | 18.5 |  |  | $ | 15.4 |  |  | $ | 8.1 |
Charges from ATC for network transmission services |  | 357.3 |  |  | 289.2 |  |  | 231.4 |
Schedule of receivables and payables with ATC | As of December 31, 2016 and 2015, our balance sheets included the following receivables and payables related to ATC:
(in millions) |  | 2016 |  | 2015
Accounts receivable |  |  |  |
Services provided to ATC |  | $ | 2.2 |  |  | $ | 1.0 |
Accounts payable |  |  |  |
Services received from ATC |  | 28.7 |  |  | 28.3 |
Schedule of summarized income statement data for ATC | Summarized financial data for ATC is included in the tables below:
(in millions) |  | 2016 |  | 2015 |  | 2014
Income statement data |  |  |  |  |  |
Revenues |  | $ | 650.8 |  |  | $ | 615.8 |  |  | $ | 635.0 |
Operating expenses |  | 322.5 |  |  | 319.3 |  |  | 307.4 |
Other expense |  | 95.5 |  |  | 96.1 |  |  | 88.9 |
Net income |  | $ | 232.8 |  |  | $ | 200.4 |  |  | $ | 238.7 |
Schedule of summarized balance sheet data for ATC |
(in millions) |  | December 31, 2016 |  | December 31, 2015
Balance sheet data |  |  |  |
Current assets |  | $ | 75.8 |  |  | $ | 80.5 |
Noncurrent assets |  | 4,312.9 |  |  | 3,948.3 |
Total assets |  | $ | 4,388.7 |  |  | $ | 4,028.8 |
Current liabilities |  | $ | 495.1 |  |  | $ | 330.3 |
Long-term debt |  | 1,865.3 |  |  | 1,790.7 |
Other noncurrent liabilities |  | 271.5 |  |  | 245.0 |
Shareholders' equity |  | 1,756.8 |  |  | 1,662.8 |
Total liabilities and shareholders' equity |  | $ | 4,388.7 |  |  | $ | 4,028.8 |

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