XML 30 R31.htm IDEA: XBRL DOCUMENT v2.4.0.6
Share-Based Compensation Expenses (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Option plan $ 4,101 $ 2,273
Other share-based awards 18,926 13,095
Total share-based compensation before tax 23,027 15,368
Tax benefit 8,607 5,866
Total share-based compensation expense included in Net income $ 14,420 $ 9,502