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SUPPLEMENTAL CASH FLOW INFORMATION (Tables)
 9 Months Ended
Sep. 30, 2017
Additional Cash Flow Elements and Supplemental Cash Flow Information [Abstract]  
Schedule of supplemental cash flow information
 
 
Nine Months Ended September 30
(in millions)
 
2017
 
2016
Cash (paid) for interest, net of amount capitalized
 
$
(258.2
)
 
$
(260.7
)
Cash received for income taxes, net
 
7.3

 
11.7

Significant non-cash transactions
 
 
 
 
Accounts payable related to construction costs
 
172.7

 
113.1

Increase (decrease) in restricted cash from the sale (purchase) of investments held in the rabbi trust

 
4.6

 
(4.5
)
Portion of Bostco real estate holdings sale financed with note receivable *
 
7.0

 
—

Amortization of deferred revenue
 
18.7

 
18.5


*
See Note 3, Dispositions, for more information on this sale.