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Years from date of grant that stock options expire

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Share Based Compensation Arrangement by Share based Payment Award, Vesting Percentage

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Amount of increase in additional paid in capital (APIC) resulting from a tax benefit associated with share-based compensation plan other than an employee stock ownership plan (ESOP). Includes, but is not limited to, excess tax benefit.

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Aggregate number of common shares reserved for future issuance.

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The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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-Glossary Financing Activities

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

General descriptive information regarding an arrangement under which employees and directors receive: (a) awards of equity shares, equity share options, or other equity instruments; or (b) the entity incurs liabilities to them: (1) in amounts based, at least in part, on the price of the entity's shares or other equity instruments; or (2) that require or may require settlement by issuance of the entity's shares. Such an arrangement is usually provided to employees and directors to compensate them, provide performance incentives to them, and to attract or retain their services. May also include pertinent information particular to a plan that is not elsewhere specified in the taxonomy.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Number of options outstanding, including both vested and non-vested options.

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Share-based Compensation - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Equity Instruments Other Than Options Performance Share Units [Line Items]
Description of share based compensation plan	The Company maintains a share-based compensation plan which authorizes the granting of various equity-based incentives including stock options and restricted stock units (RSUs) to employees and nonemployee directors.
Share-based compensation plan, number of shares of common stock reserved for issuance	73.1
Stock options, number of years to expire	10 years
Outstanding stock options	25.1	27.4	31.7	37.4
Proceeds from stock option exercises	$ 233.3	$ 328.6	$ 334.0
Tax benefit on stock option exercises and other	93.6	150.8	116.7
RSUs vested, total fair value	60.2	76.4	55.5
Stock Compensation Plan
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Equity Instruments Other Than Options Performance Share Units [Line Items]
Outstanding stock options	46.0
Stock Option
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Equity Instruments Other Than Options Performance Share Units [Line Items]
Stock options exercised total intrinsic value	325.2	469.8	416.5
Tax benefit on stock option exercises and other	98.9
Restricted Stock Units (RSUs)
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Equity Instruments Other Than Options Performance Share Units [Line Items]
Tax benefit on stock option exercises and other	$ 18.3
Vesting percentage	100.00%
Vesting period	3 years