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- Definition

Percentage Of After Tax Net Profit To Be Retain By Executive Officer To Achieve Ownership Position

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Period Expected For Vesting

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Average Award Vesting Period

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Grants, Fair Value

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No definition available.

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- Definition

Top Quartile Performance Maximum Payout Target

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No definition available.

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- Definition

Total Fair Value of In-The-Money Options

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No definition available.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (j)
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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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- Definition

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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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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- Definition

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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No definition available.

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- Definition

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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- Definition

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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- Definition

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

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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- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of fully vested and expected to vest options outstanding.

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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Stock-Based Compensation (Narrative) (Details) - USD ($)		1 Months Ended			12 Months Ended
	Jan. 26, 2017	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Equity Ownership And Long Term Cash Incentive Plan 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant					3,498,788
Number of shares authorized					6,900,000
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value					$ 6,000,000	$ 5,000,000	$ 4,000,000
Expiration of stock-based awards					10 years
Percentage of after tax net profit to be retained by the executive officer to achieve ownership position					75.00%
Weighted-average grant-date fair value of options granted (in USD per share)					$ 6.54	$ 7.40	$ 11.41
Total intrinsic value of options exercised					$ 11,000,000	$ 5,000,000	$ 5,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value					0
Total Fair Value of In-The-Money Options					32,000,000
Cost related to non-vested stock options outstanding not yet recognized					$ 6,000,000
Recognition period					1 year 8 months 13 days
Employee Service Share-based Compensation, Cash Received from Exercise of Stock Options					$ 81,000,000
Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options					4,000,000
Incentive Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Grants, Fair Value					$ 19,000,000	21,000,000	16,000,000
Average award vesting period					3 years
Top Quartile Performance Maximum Payout Target					200.00%
Incentive Stock Options [Member] \| Equity Ownership And Long Term Cash Incentive Plan 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant					1,500,000
Weighted-average grant-date fair value of options granted (in USD per share)	$ 71.40
Long term incentive plan awards (in shares)		220,450
Incentive Stock Options [Member] \| 2012-2014 Long-Term Performance Unit Program [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant-date fair value of options granted (in USD per share)				$ 88.67
Long term incentive plan awards (in shares)				105,503
Incentive Stock Options [Member] \| 2013-2015 Long-Term Performance Unit Program [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant-date fair value of options granted (in USD per share)			$ 68.09
Long term incentive plan awards (in shares)			54,103
Incentive Stock Options [Member] \| 2014-2016 Long-Term Performance Unit Program [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant-date fair value of options granted (in USD per share)		$ 71.89
Long term incentive plan awards (in shares)		86,964
Restricted Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Grants, Fair Value					$ 29,000,000	29,047,000	29,047,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value					24,000,000	23,000,000	29,000,000
Restricted Awards [Member] \| Equity Ownership And Long Term Cash Incentive Plan 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant		379,850
Weighted-average grant-date fair value of options granted (in USD per share)	$ 70.53
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Grants, Fair Value					3,000,000	5,000,000	4,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value					$ 0	$ 2,000,000	$ 1,000,000
Average award vesting period					41 months
Number of unvested restricted units expected to vest					201,570
Period expected for vesting unvested restricted units					24 months
Maximum [Member] \| Incentive Stock Options [Member] \| Equity Ownership And Long Term Cash Incentive Plan 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized					1,500,000