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SUPPLEMENTAL CASH FLOW INFORMATION (Tables)
 3 Months Ended
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