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Stock-Based Compensation
6 Months Ended
Jun. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock-Based Compensation
STOCK-BASED COMPENSATION
Available Shares
In March 2013, our board of directors approved the Republic Services, Inc. Amended and Restated 2007 Stock Incentive Plan (the "Plan"), and in May 2013 our shareholders ratified the Plan. We currently have approximately 13.4 million shares of common stock reserved for future grants under the Plan.
Grants and Expense
The following table summarizes our stock-based compensation grant and expense activity for the six months ended June 30, 2018:
 
Number of
Shares Granted
(in thousands)
 
Compensation
Expense
 (in millions)
 
Restricted stock units
440.5

 
$
13.3

 
Performance shares
329.3

 
8.8

 
Total
769.8

 
$
22.1