Share Based Compensation Arrangement By Share Based Payment Award Maximum Exercisable Period For Stock Options

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Minimum Exercisable Period For Stock Options

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- Definition

Stock Option Plan Expense Related To Retirement Eligibility Vesting

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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- Definition

The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period.

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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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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Gross number of share options (or share units) granted during the period.

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No definition available.

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Stock-based compensation - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation, authorized shares (shares)	34,283,413
Stock option expense related to retirement eligibility vesting	$ 106	$ 97	$ 88
Stock option exercisable period - minimum (years)	1 year
Stock option exercisable period - maximum (years)	10 years
Granted (shares)	0	0	0
Total intrinsic value of options exercised	$ 122	$ 130	$ 118
Cash received from option exercises	438	326	370
Actual tax benefit realized for the tax deductions from options exercised	3	21	17
Unrecognized compensation cost related to nonvested awards	$ 194
Unrecognized compensation cost expected to be recognized for nonvested award over a weighted-average period, years	1 year 7 months 6 days
Total fair value of stock based compensation that vested during the period	$ 236	429	229
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation cost	2	10	28
Stock based compensation cost, tax benefit recognized	$ 1	4	11
Restricted Stock and Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation, authorized shares (shares)	19,569,848
Stock based compensation cost	$ 256	235	243
Stock based compensation cost, tax benefit recognized	$ 91	$ 83	$ 94
Shares granted (shares)	8,331,206
Restricted Stock and Restricted Stock Units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation, vesting period	0 years
Restricted Stock and Restricted Stock Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation, vesting period	4 years
Performance Units \| Executive Committee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (shares)	548,391	630,100	719,947	942,428
Stock based compensation, required service period	3 years
Subsidiary Long-Term Incentive Plans \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation, required service period	3 years
Subsidiary Long-Term Incentive Plans \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation, required service period	5 years
Restructuring Charges \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation cost			$ 1
Restructuring Charges \| Restricted Stock and Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation cost			$ 13