Incentive Stock Options And Non-Qualified Stock Options Granted Price At Fair Value Of Common Stock, Percentage

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- Definition

Shares issued under other than stock options plan counted in long-term incentive plan.

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- Definition

Shares issued under stock options plan counted in long-term incentive plan.

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- Definition

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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- Definition

Aggregate number of common shares reserved for future issuance.

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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

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

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- Definition

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 equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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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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- 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

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

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

For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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- Definition

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

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- Definition

Number of share options (or share units) exercised during the current period.

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Value of stock related to Restricted Stock Awards forfeited during the period.

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Aggregate value of stock related to Restricted Stock Awards issued during the period.

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Long-term Incentive Plans (Narrative) (Detail) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
ISO and NQSO granted price at fair value of common stock, percentage	100.00%
Options expired or canceled	767,406	2,247,862	461,805
Stock option awards exercised	400,000	0	0
Number of Options, Outstanding	2,548,000.00	3,715,406.00	5,963,268.00	6,425,073.00
Omnibus Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total number of shares of common stock reserved and available for issuance	10,000,000
Shareholder approved increase in common stock reserved and available for issuance	14,000,000
Shares issued under Omnibus Plan in connection with stock options, count	1
Shares/units available for future grants	6,056,168
Omnibus Plan [Member] \| After May 1, 2012 Amendment [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued under Omnibus Plan in connection with other than stock options, count	1.28
Omnibus Plan [Member] \| Prior To May 1, 2012 Amendment [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued under Omnibus Plan in connection with other than stock options, count	2
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	3,263,472	449,931	2,689,542
Forfeited	123,120	2,968,530	180,665
Stock issued during period, value, restricted stock award, gross	39	6
Stock issued during period, value, restricted stock award, forfeitures	1	1
Share-based compensation expense (benefit)	18	11	11
Tax benefit related to restricted share awards	2	1	1
Unrecognized compensation cost	35
Expected to be recognized as expense over a weighted average period, years	1 year 9 months 29 days
Other than options outstanding	6,358,826	3,832,115	7,320,110	4,881,782
Restricted Stock [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Long-term incentive awards vesting period, years	3 years 0 months 0 days
Restricted Stock [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Long-term incentive awards vesting period, years	5 years 0 months 0 days
Restricted Share Unit [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total number of shares of common stock reserved and available for issuance	350,000
Forfeited	38,000
Long-term incentive awards vesting period, years	5 years 0 months 0 days
Other than options outstanding	185,312
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense (benefit)		2	3
Tax benefit related to restricted share awards	4	5	6
Employee Stock Option [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Long-term incentive awards expiration period, years	7 years 0 months 0 days
Long-term incentive awards vesting period, years	4 years 0 months 0 days
Employee Stock Option [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Long-term incentive awards expiration period, years	10 years 0 months 0 days
Long-term incentive awards vesting period, years	5 years 0 months 0 days
Performance Based Awards [Member] \| Key Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	3,000,000		2,000,000