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Supplemental Cash Flow Information | 12 Months Ended
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Dec. 31, 2017
Supplemental Cash Flow Information [Abstract] |
SUPPLEMENTAL CASH FLOW INFORMATION | SUPPLEMENTAL CASH FLOW INFORMATION
(in millions) |  | 2017 |  | 2016 |  | 2015
Cash (paid) for interest, net of amount capitalized |  | $ | (413.7 | ) |  | $ | (411.9 | ) |  | $ | (329.6 | )
Cash received (paid) for income taxes, net |  | 5.2 |  |  | 39.7 |  |  | (9.3 | )
Significant non-cash transactions: |  |  |  |  |  |
Accounts payable related to construction costs |  | 169.2 |  |  | 170.1 |  |  | 177.1 |
Increase (decrease) in restricted cash from the sale (purchase) of investments held in the rabbi trust |  | 4.6 |  |  | (59.2 | ) |  | (60.2 | )
Portion of Bostco real estate holdings sale financed with note receivable (1) |  | 7.0 |  |  | — |  |  | — |
Amortization of deferred revenue |  | 24.9 |  |  | 24.7 |  |  | 39.9 |
Note receivable received related to the sale of AMP Trillium LLC (2) |  | — |  |  | — |  |  | 12.0 |
Capital assets received related to the sale of AMP Trillium LLC (2) |  | — |  |  | — |  |  | 6.3 |
(1) | See Note 3, Dispositions, for more information on this sale.
(2) | ITF owned a 30% interest in AMP Trillium LLC. See Note 3, Dispositions, for more information on the sale of ITF.
At December 31, 2017 and 2016, restricted cash of $19.7 million and $33.6 million, respectively, was recorded within other long-term assets on our balance sheets. The majority of this amount was held in the Integrys rabbi trust and represents a portion of the required funding that was triggered by the announcement of the Integrys acquisition. Withdrawals of restricted cash from the rabbi trust for qualifying payments are shown as an investing activity on the statements of cash flows. Changes in restricted cash due to the sale or purchase of investments held in the rabbi trust are non-cash transactions and are included in the table above.

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- Definition The entire disclosure for supplemental cash flow activities, including cash, noncash, and part noncash transactions, for the period. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -URI http://asc.fasb.org/topic&trid=2134446 + Details
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