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Supplemental Cash Flow Information (Tables) | 12 Months Ended
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Dec. 31, 2018
Supplemental Cash Flow Information [Abstract] |
Schedule of supplemental cash flow information |
|  | Year Ended December 31
(in millions) |  | 2018 |  | 2017 |  | 2016
Cash (paid) for interest, net of amount capitalized |  | $ | (441.5 | ) |  | $ | (413.7 | ) |  | $ | (411.9 | )
Cash (paid) received for income taxes, net |  | (16.3 | ) |  | 5.2 |  |  | 39.7 |
Significant non-cash transactions: |  |  |  |  |  |
Accounts payable related to construction costs |  | 65.9 |  |  | 169.2 |  |  | 170.1 |
Receivable related to corporate-owned life insurance proceeds |  | 7.7 |  |  | — |  |  | — |
Portion of Bostco real estate holdings sale financed with note receivable * |  | — |  |  | 7.0 |  |  | — |
* | See Note 3, Dispositions, for more information on this sale.
Schedule of retroactively restated statements of cash flows | 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
(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
Operating Activities |  |  |  |  |  |  |  |  |  |  |  |
Change in – |  |  |  |  |  |  |  |  |  |  |  |
Other current assets |  | $ | (6.0 | ) |  | $ | (1.1 | ) |  | $ | (7.1 | ) |  | $ | 103.1 |  |  | $ | 0.1 |  |  | $ | 103.2 |
Other, net |  | (197.5 | ) |  | 0.1 |  |  | (197.4 | ) |  | (53.8 | ) |  | 0.2 |  |  | (53.6 | )
Net cash provided by operating activities |  | 2,079.6 |  |  | (1.0 | ) |  | 2,078.6 |  |  | 2,103.5 |  |  | 0.3 |  |  | 2,103.8 |
Investing Activities |  |  |  |  |  |  |  |  |  |  |  |
Withdrawal of restricted cash from rabbi trust for qualifying payments |  | 19.5 |  |  | (19.5 | ) |  | — |  |  | 26.6 |  |  | (26.6 | ) |  | — |
Proceeds from the sale of investments held in rabbi trust |  | — |  |  | 8.7 |  |  | 8.7 |  |  | — |  |  | 1.7 |  |  | 1.7 |
Purchase of investments held in rabbi trust |  | — |  |  | (3.7 | ) |  | (3.7 | ) |  | — |  |  | (59.2 | ) |  | (59.2 | )
Net cash used in investing activities |  | (2,239.6 | ) |  | (14.5 | ) |  | (2,254.1 | ) |  | (1,270.1 | ) |  | (84.1 | ) |  | (1,354.2 | )
Net change in cash, cash equivalents, and restricted cash |  | 1.4 |  |  | (15.5 | ) |  | (14.1 | ) |  | (12.3 | ) |  | (83.8 | ) |  | (96.1 | )
Cash, cash equivalents, and restricted cash at beginning of year |  | 37.5 |  |  | 35.2 |  |  | 72.7 |  |  | 49.8 |  |  | 119.0 |  |  | 168.8 |
Cash, cash equivalents, and restricted cash at end of year |  | $ | 38.9 |  |  | $ | 19.7 |  |  | $ | 58.6 |  |  | $ | 37.5 |  |  | $ | 35.2 |  |  | $ | 72.7 |
Reconciliation of cash and cash equivalents and restricted cash | The following table provides 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 December 31:
(in millions) |  | 2018 |  | 2017 |  | 2016
Cash and cash equivalents |  | $ | 84.5 |  |  | $ | 38.9 |  |  | $ | 37.5 |
Restricted cash included in other current assets |  | 2.5 |  |  | — |  |  | 0.8 |
Restricted cash included in other long term assets |  | 59.1 |  |  | 19.7 |  |  | 34.4 |
Cash, cash equivalents, and restricted cash |  | $ | 146.1 |  |  | $ | 58.6 |  |  | $ | 72.7 |

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