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Supplemental Cash Flow Information
 3 Months Ended
Mar. 31, 2016
Supplemental Cash Flow Information [Abstract]  
SUPPLEMENTAL CASH FLOW INFORMATION
SUPPLEMENTAL CASH FLOW INFORMATION
 
 
Three Months Ended March 31
(in millions)
 
2016
 
2015
Cash (paid) for interest, net of amount capitalized
 
$
(40.7
)
 
$
(20.0
)
Cash (paid) for income taxes, net of refunds
 
(0.4
)
 
(4.3
)
Significant non-cash transactions:
 
 
 
 
Accounts payable related to construction costs
 
90.1

 
1.6

Amortization of deferred revenue
 
6.2

 
11.1


At March 31, 2016, and December 31, 2015, restricted cash of $95.9 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.