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SUPPLEMENTAL CASH FLOW INFORMATION (Tables) | 3 Months Ended
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Mar. 31, 2018
Additional Cash Flow Elements and Supplemental Cash Flow Information [Abstract] |
Schedule of supplemental cash flow information |
|  | Three Months Ended March 31
(in millions) |  | 2018 |  | 2017
Cash (paid) for interest, net of amount capitalized |  | $ | (68.5 | ) |  | $ | (56.6 | )
Cash received for income taxes, net |  | 0.3 |  |  | 8.9 |
Significant non-cash transactions |  |  |  |
Accounts payable related to construction costs |  | 74.9 |  |  | 116.4 |
Portion of Bostco real estate holdings sale financed with note receivable * |  | — |  |  | 7.0 |
Amortization of deferred revenue |  | 6.3 |  |  | 6.2 |
* | See Note 3, Disposition, for more information on this sale.
Reconciliation of cash and cash equivalents and restricted cash | See the following table for a reconciliation of cash and cash equivalents and restricted cash reported within the balance sheets to the sum of the total of the same amounts shown in the statements of cash flows at March 31.
(in millions) |  | 2018 |  | 2017
Cash and cash equivalents |  | $ | 48.1 |  |  | $ | 45.7 |
Restricted cash included in other current assets |  | — |  |  | 0.8 |
Restricted cash included in other long term assets |  | 23.6 |  |  | 26.9 |
Cash, cash equivalents, and restricted cash |  | $ | 71.7 |  |  | $ | 73.4 |
Schedule of retroactively restated statements of cash flows | Our statements of cash flows for the years ended December 31, 2017, 2016, and 2015 were retroactively restated from what was previously presented in our 2017 Annual Report on Form 10-K to reflect the adoption of ASU 2016-18. The impacts to our statements of cash flows from adoption of this standard are reflected in the table below.
|  | Year Ended December 31, 2017 |  | Year Ended December 31, 2016 |  | Year Ended December 31, 2015
(in millions) |  | 2017 Form 10-K Cash Flows |  | Impact of ASU 2016-18 |  | Cash Flows After Adoption |  | 2017 Form 10-K Cash Flows |  | Impact of ASU 2016-18 |  | Cash Flows After Adoption |  | 2017 Form 10-K Cash Flows |  | Impact of ASU 2016-18 |  | Cash Flows After Adoption
Operating Activities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Change in – |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other current assets |  | $ | (6.0 | ) |  | $ | (1.1 | ) |  | $ | (7.1 | ) |  | $ | 103.1 |  |  | $ | 0.1 |  |  | $ | 103.2 |  |  | $ | (27.2 | ) |  | $ | — |  |  | $ | (27.2 | )
Other, net |  | (197.5 | ) |  | 0.1 |  |  | (197.4 | ) |  | (53.8 | ) |  | 0.2 |  |  | (53.6 | ) |  | (209.1 | ) |  | 1.5 |  |  | (207.6 | )
Net cash provided by operating activities |  | 2,079.6 |  |  | (1.0 | ) |  | 2,078.6 |  |  | 2,103.5 |  |  | 0.3 |  |  | 2,103.8 |  |  | 1,293.6 |  |  | 1.5 |  |  | 1,295.1 |
Investing Activities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Withdrawal of restricted cash from rabbi trust for qualifying payments |  | 19.5 |  |  | (19.5 | ) |  | — |  |  | 26.6 |  |  | (26.6 | ) |  | — |  |  | 1.4 |  |  | (1.4 | ) |  | — |
Proceeds from the sale of investments held in rabbi trust |  | — |  |  | 8.7 |  |  | 8.7 |  |  | — |  |  | 1.7 |  |  | 1.7 |  |  | — |  |  | 126.9 |  |  | 126.9 |
Purchase of investments held in rabbi trust |  | — |  |  | (3.7 | ) |  | (3.7 | ) |  | — |  |  | (59.2 | ) |  | (59.2 | ) |  | — |  |  | (60.2 | ) |  | (60.2 | )
Integrys acquisition, net of cash acquired |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (1,329.9 | ) |  | 30.8 |  |  | (1,299.1 | )
Other, net |  | 12.0 |  |  | — |  |  | 12.0 |  |  | 3.0 |  |  | — |  |  | 3.0 |  |  | 57.0 |  |  | (1.2 | ) |  | 55.8 |
Net cash used in investing activities |  | (2,239.6 | ) |  | (14.5 | ) |  | (2,254.1 | ) |  | (1,270.1 | ) |  | (84.1 | ) |  | (1,354.2 | ) |  | (2,517.5 | ) |  | 94.9 |  |  | (2,422.6 | )
Financing Activities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other, net |  | (6.5 | ) |  | — |  |  | (6.5 | ) |  | (13.6 | ) |  | — |  |  | (13.6 | ) |  | (18.9 | ) |  | 22.6 |  |  | 3.7 |
Net cash provided by (used in) financing activities |  | 161.4 |  |  | — |  |  | 161.4 |  |  | (845.7 | ) |  | — |  |  | (845.7 | ) |  | 1,211.8 |  |  | 22.6 |  |  | 1,234.4 |
Net change in cash, cash equivalents, and restricted cash |  | 1.4 |  |  | (15.5 | ) |  | (14.1 | ) |  | (12.3 | ) |  | (83.8 | ) |  | (96.1 | ) |  | (12.1 | ) |  | 119.0 |  |  | 106.9 |
Cash, cash equivalents, and restricted cash at beginning of period |  | 37.5 |  |  | 35.2 |  |  | 72.7 |  |  | 49.8 |  |  | 119.0 |  |  | 168.8 |  |  | 61.9 |  |  | — |  |  | 61.9 |
Cash, cash equivalents, and restricted cash at end of period |  | $ | 38.9 |  |  | $ | 19.7 |  |  | $ | 58.6 |  |  | $ | 37.5 |  |  | $ | 35.2 |  |  | $ | 72.7 |  |  | $ | 49.8 |  |  | $ | 119.0 |  |  | $ | 168.8 |

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