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Supplemental Cash Flow Information
 9 Months Ended
Sep. 30, 2016
Supplemental Cash Flow Information [Abstract]  
SUPPLEMENTAL CASH FLOW INFORMATION
SUPPLEMENTAL CASH FLOW INFORMATION
 
 
Nine Months Ended September 30
(in millions)
 
2016
 
2015
Cash (paid) for interest, net of amount capitalized
 
$
(260.7
)
 
$
(150.1
)
Cash received (paid) for income taxes, net
 
11.7

 
(2.0
)
Significant non-cash transactions
 
 
 
 
Accounts payable related to construction costs
 
113.1

 
179.1

Amortization of deferred revenue
 
18.5

 
30.3


At September 30, 2016, and December 31, 2015, restricted cash of $90.2 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. Withdrawals of restricted cash from the rabbi trust for qualifying payments are shown as an investing activity on the statements of cash flows. Increases and decreases in restricted cash due to the sale or purchase of restricted investments held in the rabbi trust are reflected as non-cash transactions on the statements of cash flows.