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Accounts Payable and Other Current Liabilities (Tables)
6 Months Ended
Jun. 30, 2019
Payables and Accruals [Abstract]  
Schedule of Accounts Payable and Other Current Liabilities
Accounts payable and other current liabilities consist of the following (in millions):
 
 
June 30, 2019
 
December 31, 2018
Accounts payable
 
$
133.1

 
$
104.7

Accrued expenses and other current liabilities
 
95.5

 
83.4

Accrued interconnection costs
 
64.1

 
103.0

Accrued payroll and employee benefits
 
35.1

 
44.2

Accrued interest
 
8.1

 
8.8

Accrued income taxes
 
2.6

 
0.8

Total accounts payable and other current liabilities
 
$
338.5

 
$
344.9