Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation Plans - Amendments to Restricted Stock and SARs - Additional Information (Detail)

v3.10.0.1
Stock-Based Compensation Plans - Amendments to Restricted Stock and SARs - Additional Information (Detail)
Oct. 30, 2013
shares
Deferred stock units [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
DSU settlement to common stock percentage 20.00%
DSU settlement into actual stock issued term 5 years
Employee termination age 67 years
Percentage of shares of deferred stock units settled in the event of death or termination after reaching age 67 100.00%
Restricted Stock Sales Restriction [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of original shares subject to resale restriction 3,689,326
Sales restriction period for restricted stock 5 years