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Stockholders' Equity (Tables)
 12 Months Ended
Dec. 31, 2017
Common Share Repurchases and Issuances

The following table summarizes our common share repurchases and issuances.

 

 

 

Years Ended December 31,

 

 

 

2017

 

 

2016

 

 

2015

 

Common stock repurchased(1)

 

 

29,646,374

 

 

 

59,625,325

 

 

 

56,043,711

 

Average purchase price per share

 

$

14.85

 

 

$

12.68

 

 

$

16.87

 

Shares repurchased related to employee stock-based

   compensation plans(2)

 

 

1,847,651

 

 

 

3,197,355

 

 

 

2,404,328

 

Average purchase price per share

 

$

15.40

 

 

$

13.21

 

 

$

19.81

 

Common shares issued(3)

 

 

3,680,479

 

 

 

5,476,010

 

 

 

4,924,021

 

 

 

(1)

Common shares purchased under our share repurchase program.

 

(2)

Comprises shares withheld from stock option exercises and vesting of restricted stock for employees’ tax withholding obligations and shares tendered by employees to satisfy option exercise costs.

 

(3)

Common shares issued under our various compensation and benefit plans.