Share-Based Compensation Expenses (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Disclosure Share Based Compensation Expenses [Abstract]
Option plan	$ 22,245	$ 16,497	$ 9,948
Other share-based awards	57,640	56,770	63,872
Total share-based compensation before tax	79,885	73,267	73,820
Tax benefit	29,835	27,401	27,929
Total share-based compensation expense included in net income	$ 50,050	$ 45,866	$ 45,891