Stock-Based Compensation and Other Employee Benefit Plans (Summary Of Stock-Based Compensation Expense And Related Tax Benefits) (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 12,944,000		$ 4,433,000		$ 3,573,000
Income tax benefit from stock-based compensation	9,700,000		2,500,000		6,300,000
Excess tax benefit from stock-based compensation	$ 4,315,000	[1]	$ 759,000	[1]	$ 7,766,000	[1]

[1] Excess tax benefits, which represent cash flows from tax deductions in excess of the tax effect of compensation expense recognized for stock options exercised and vested restricted shares, are classified as financing cash flows in the Company’s consolidated statements of cash flows.