XML 79 R68.htm IDEA: XBRL DOCUMENT v3.10.0.1
Stock Option Activity (Detail)
shares in Thousands
9 Months Ended
Sep. 30, 2018
$ / shares
shares
Number of Shares  
Options outstanding, beginning of period | shares 3,169
Additional options granted based upon achievement of specified performance criteria | shares 81
Canceled/Expired | shares (174)
Exercised | shares (118)
Options outstanding, end of period | shares 2,958
Weighted Average Exercise Price  
Options outstanding, beginning of period | $ / shares $ 32.49
Additional options granted based upon achievement of specified performance criteria | $ / shares 32.42
Canceled/Expired | $ / shares 27.75
Exercised | $ / shares 30.86
Options outstanding, end of period | $ / shares $ 32.70