Share-Based Compensation Plans - Additional Information (Detail) (USD $)	12 Months Ended																								1 Months Ended			12 Months Ended
	Dec. 31, 2013 CompensationPlan	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Stock Options	Dec. 31, 2012 Stock Options	Dec. 31, 2011 Stock Options	Dec. 31, 2013 Restricted Stock	Dec. 31, 2012 Restricted Stock	Dec. 31, 2011 Restricted Stock	Dec. 31, 2013 Restricted Stock Minimum	Dec. 31, 2013 Restricted Stock Maximum	Dec. 31, 2013 Other Restricted Stock Units	Dec. 31, 2012 Other Restricted Stock Units	Dec. 31, 2011 Other Restricted Stock Units	Dec. 31, 2013 Other Restricted Stock Units Minimum	Dec. 31, 2013 Other Restricted Stock Units Maximum	Dec. 31, 2013 Performance Restricted Stock Units	Dec. 31, 2012 Performance Restricted Stock Units	Dec. 31, 2013 Other Stock-Based Awards	Dec. 31, 2012 Other Stock-Based Awards	Dec. 31, 2011 Other Stock-Based Awards	Dec. 31, 2013 Management Stock Purchase Plan	Dec. 31, 2012 Management Stock Purchase Plan	Dec. 31, 2011 Management Stock Purchase Plan	Apr. 17, 2013 2012 Long Term Incentive Plan	Dec. 31, 2013 2012 Long Term Incentive Plan	Dec. 31, 2013 Directors Plan	Dec. 31, 2013 Employee Stock Purchase Plan	Dec. 31, 2012 Employee Stock Purchase Plan	Dec. 31, 2011 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional shares authorized																									2,000,000
Number of remaining shares that may be issued																										4,328,678	35,707
Number of employee stock purchase programs	2
Unrecognized compensation expenses related to share-based payment arrangements	$ 112,800,000			$ 35,200,000			$ 41,100,000					$ 23,500,000					$ 8,000,000		$ 300,000			$ 4,700,000
Weighted-average period of recognizing unrecognized compensation expenses related to share-based compensation, in years	3 years			2 years			2 years					4 years					2 years		1 year			3 years
Awards requisite service period				4 years						4 years	7 years				4 years	7 years	3 years		3 years
Award contractual terms				10 years
Share-based compensation	61,500,000	52,100,000	55,500,000	15,900,000	15,800,000	19,700,000	20,000,000	18,700,000	22,100,000			10,000,000	5,100,000	4,600,000			6,600,000	2,600,000	800,000	900,000	1,000,000	5,700,000	6,200,000	5,600,000				2,500,000	2,800,000	2,500,000
Minimum number of years for accelerated vesting				2 years
Stock options vested				946,698	1,152,890	489,648
Weighted average fair value of stock options vested				$ 20.69	$ 21.49	$ 22.80
Total intrinsic value of stock options exercised				78,000,000	42,100,000	88,700,000
Cash received from stock option exercises				135,500,000	89,600,000	106,500,000
Actual tax benefit realized from option exercises				26,700,000	14,500,000	31,600,000
Fair value assumptions, risk-free interest rate				1.60%	0.90%	1.03%											0.42%	0.41%										0.11%	0.11%	0.16%
Fair value assumptions, dividend yield				0.70%	0.80%	0.80%											0.81%	0.85%										0.80%	0.90%	0.80%
Fair value assumptions, expected life in years				6 years 6 months	7 years	7 years											2 years 10 months 17 days	2 years 9 months 29 days										6 months	6 months	6 months
Period over which the company's performance is evaluated																	3 years
Nonvested other stock-based awards, shares outstanding							871,633	1,055,625									182,103	95,969	16,112	23,107
Discount on common stock under management stock purchase program																						30.00%
Minimum annual bonus percentage required to purchase restricted stock																						25.00%
Vesting period, years																						4 years
Percentage discount on stock for domestic and foreign employees																												15.00%
After tax payroll deductions percentage of compensation, minimum																												1.00%
After tax payroll deductions percentage of compensation, maximum																												10.00%
After tax payroll deductions maximum amount of compensation as defined by the plan																												$ 20,000
Employee payroll deduction period																												6 months
Period restricted for sale or transfer after purchase																												6 months
Shares available to purchase during period under Employee Stock Purchase Plan																												505,896
Shares purchased under Employee Stock Purchase Plan																												138,520	147,858