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Accounts Payable and Other Current Liabilities
12 Months Ended
Dec. 31, 2019
Payables and Accruals [Abstract]  
Accounts Payable and Other Current Liabilities
13. Accounts Payable and Other Current Liabilities

Accounts payable and other current liabilities consist of the following (in millions):
December 31,
 20192018
Accounts payable$146.9  $104.7  
Accrued expenses and other current liabilities95.7  83.4  
Accrued interconnection costs43.5  103.0  
Accrued payroll and employee benefits40.9  44.2  
Accrued interest10.7  8.8  
Accrued income taxes1.9  0.8  
Total accounts payable and other current liabilities$339.6  $344.9