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CASH AND CASH EQUIVALENTS
12 Months Ended
Dec. 31, 2016
Cash and Cash Equivalents [Abstract]  
CASH AND CASH EQUIVALENTS
8. CASH AND CASH EQUIVALENTS   
 
We extinguish liabilities when a creditor has relieved us of our obligation, which occurs when our financial institution honors a check that the creditor has presented for payment. Accordingly, obligations for which we have made payments that have not yet been presented to the financial institution totaling approximately $9.8 million and $21.5 million at December 31, 2016 and 2015, respectively, are included in “Accounts payable and other” on our consolidated statements of financial position.
 
Restricted Cash 
 
Restricted cash is comprised of the following:
 
 
 
December 31,
 
 
 
2016
 
2015
 
 
 
(in millions)
 
Cash collected on behalf of Enbridge subsidiary for accounts receivable sales and not yet remitted to the Enbridge subsidiary (Note 24)
 
$
24.5
 
$
19.0
 
Cash held in escrow for acquisitions (Note 7)
 
 
 
 
6.0
 
Cash collateral for derivative activities (Note 21)
 
 
 
 
12.6
 
 
 
$
24.5
 
$
37.6