XML 39 R45.htm IDEA: XBRL DOCUMENT v2.4.0.8
Share-Based Compensation - Additional Information (Detail) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of shares to reduce shares available to grant by upon vesting of restricted stock units 600,000
Estimated pretax compensation expense $ 7.0
Estimated pretax compensation expenses expiration, years 4 years
Service period in years 4 years
Restricted stock awards exercisable in percentage 25.00%
Long-term incentive, cash-based awards 3 years
Restricted stock awards exercisable in percentage 25.00%
Stock compensation and recognized liability 2.3
Fair value of the liability incurred through 1.8
Performance unit award expenses $ 0.7
Non-Employee Directors' Stock Options [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expiration period in years 10 years
Vesting period in years 4
2008 Incentive Compensation Plan [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Common stock subject to awards of stock options or stock appreciation rights payable in shares 1.0
Common stock subject to any other form of award 1.67
Common stock available for future share-based awards 5,700,000
Shares issuable upon exercise of outstanding options 4,400,000
Employee Stock Option [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Employee stock options exercisable in percentage 25.00%
Service period in years 4 years
Expiration period in years 10 years
Restricted Stock Shares [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Service period in years 4 years
Long-term incentive, cash-based awards 3 years