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Supplemental Cash Flow Information
 6 Months Ended
Jun. 30, 2016
Supplemental Cash Flow Information [Abstract]  
SUPPLEMENTAL CASH FLOW INFORMATION
SUPPLEMENTAL CASH FLOW INFORMATION
 
 
Six Months Ended June 30
(in millions)
 
2016
 
2015
Cash (paid) for interest, net of amount capitalized
 
$
(209.2
)
 
$
(116.3
)
Cash received (paid) for income taxes, net of (payments) refunds
 
7.4

 
(3.0
)
Significant non-cash transactions
 
 
 
 
Accounts payable related to construction costs
 
114.0

 
3.5

Amortization of deferred revenue
 
12.3

 
20.7


At June 30, 2016, and December 31, 2015, restricted cash of $94.4 million and $118.4 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.