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Supplemental Cash Flow Information (Tables)
 12 Months Ended
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