Aggregate number of common shares reserved for future issuance.

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-Name Accounting Standards Codification

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Unrecognized cost of unvested share-based compensation awards.

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-Publisher FASB

-Name Accounting Standards Codification

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

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Allocated Share-base Compensation Expense, Reversal

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SHARE-BASED COMPENSATION - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2015	Jun. 30, 2014	Apr. 01, 2015
Stock option activity
Reversal of share based compensation expense	$ 6
Stock options
Stock option activity
Granted (in shares)		97,000	261,000
Weighted average exercise price (in usd per share)		$ 201.70	$ 117.83
Weighted average grant date fair value of stock options (in usd per share)		$ 66.81	$ 62.15
Time-based RSUs
Stock option activity
Granted (in shares)		45,000	91,000
Weighted average grant date fair value of stock options (in usd per share)		$ 224.45	$ 135.42
Performance-based RSUs
Stock option activity
Granted (in shares)		693,000	410,000
Weighted average grant date fair value of stock options (in usd per share)		$ 310.56	$ 209.72
RSUs
Stock option activity
Remaining unrecognized compensation expense related to non-vested awards	$ 365	$ 365
Weighted average service period over which compensation cost is expected to be recognized (in years)		3 years 5 months 1 day
2014 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares approved for grant under the share based compensation plan				18,000,000
Common shares available for issuance				20,000,000
Number of shares available for future grant	14,458,169	14,458,169