XML 21 R70.htm IDEA: XBRL DOCUMENT v2.4.0.8
Activity in Nonvested Restricted Stock and Unit Awards (Detail) (Restricted Stock, USD $)
12 Months Ended
Dec. 31, 2013
Restricted Stock
 
Share Based Compensation [Line Items]  
Number of shares outstanding, beginning balance 1,055,625
Number of options, granted 189,031
Number of shares, vested (322,075)
Number of shares, forfeited (50,948)
Number of shares outstanding, ending balance 871,633
Weighted average grant date fair value outstanding, beginning balance $ 87.76
Weighted average grant date fair value, granted $ 134.73
Weighted average grant date fair value, vested $ 88.44
Weighted average grant date fair value, forfeited $ 96.94
Weighted average grant date fair value outstanding, ending balance $ 98.34