Stock-based Compensation Plans - Options Outstanding and Option Exercisable (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Options Outstanding	41,939
Weighted-average remaining contractual life (in years)	6 years 4 months 24 days
Weighted- average exercise price	$ 70.33
Options Exercisable	20,091
Weighted-average exercise price	$ 67.58
Exercise prices range $23.75 - $56.61
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise prices minimum range	$ 23.75
Exercise prices maximum range	$ 56.61
Options Outstanding	7,244
Weighted-average remaining contractual life (in years)	3 years 9 months 18 days
Weighted- average exercise price	$ 45.23
Options Exercisable	6,257
Weighted-average exercise price	$ 45.84
Exercise prices range $58.45 - $68.83
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise prices minimum range	$ 58.45
Exercise prices maximum range	$ 68.33
Options Outstanding	8,458
Weighted-average remaining contractual life (in years)	5 years 6 months
Weighted- average exercise price	$ 65.82
Options Exercisable	5,125
Weighted-average exercise price	$ 64.70
Exercise prices range $70.31 - $78.35
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise prices minimum range	$ 70.31
Exercise prices maximum range	$ 78.35
Options Outstanding	13,765
Weighted-average remaining contractual life (in years)	8 years 7 months 6 days
Weighted- average exercise price	$ 71.94
Options Exercisable	1,289
Weighted-average exercise price	$ 72.25
Exercise prices range $83.88 - $84.93
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise prices minimum range	$ 83.88
Exercise prices maximum range	$ 84.93
Options Outstanding	10,005
Weighted-average remaining contractual life (in years)	6 years 1 month 6 days
Weighted- average exercise price	$ 84.21
Options Exercisable	5,762
Weighted-average exercise price	$ 84.45
Exercise prices range $89.99 - $110.77
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise prices minimum range	$ 89.99
Exercise prices maximum range	$ 110.77
Options Outstanding	2,467
Weighted-average remaining contractual life (in years)	5 years 9 months 18 days
Weighted- average exercise price	$ 94.31
Options Exercisable	1,658
Weighted-average exercise price	$ 96.29