Stock-Based Associate Compensation Plans - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2011 Year	Dec. 31, 2010	Dec. 31, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Description of Holiday Stock Plan	Annual awards of one share of common stock to each full-time associate for each full calendar year of service up to a maximum of 10 shares.
Stock based compensation	$ 9	$ 8	$ 7
Tax benefit from compensation expense	4	3	3
Unrecognized compensation costs related to non-vested awards	15
Expected weighted-average period to recognize the unrecognized compensation costs related to non-vested awards	1.9
Options vested	2	1
Cash received from the exercise of options	1
Weighted-average remaining contractual life for exercisable awards	3.3
Shares authorized to be granted under the shareholder-approved plans	16,900,000
Shares available for future issuance under the plans	4,400,000
Dividend yield, minimum	4.70%	5.41%
Dividend yield, maximum	5.29%	5.94%
Risk-free rates, minimum	2.86%	3.49%
Risk-free rates, maximum	3.41%	3.52%
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term, minimum	2.59	2.76
Expected term, maximum	2.87	2.86
Dividend yield, minimum	4.68%	5.41%
Dividend yield, maximum	5.26%	5.94%
Risk-free rates, minimum	0.65%	1.43%
Risk-free rates, maximum	1.25%	1.50%
Restricted Stock Units \| Service Based Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards other than options vested, intrinsic value	$ 13	$ 5
Awards vesting period	Three years after the date of grant
Awards vesting period	3 years
Restricted Stock Units \| Performance Based Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards other than options vested, intrinsic value	$ 0	$ 0
Awards vesting period	First day of March after a three-calendar-year performance period
Performance period	3 years
Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized to be granted under the shareholder-approved plans	300,000
Shares of common stock granted in period	24,492
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards exercise peirod	Over 10-year periods
Awards exercise peirod	10 years
Awards vesting period	Ratably over a three-year period
Awards vesting period	3 years
Shares of common stock granted in period	891,000
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options exercised	1	1	1
Options vested			1
Cash received from the exercise of options		$ 1	$ 1
Maximum \| Restricted Stock Units \| Service Based Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards other than options vested, intrinsic value			$ 1
Maximum \| Restricted Stock Units \| Performance Based Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards other than options vested, intrinsic value			$ 1

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Share Based Compensation Arrangement by Share Based Payment Award, Awards Exercise Period

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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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Share Based Compensation Arrangement by Share Based Payment Award, Exercise Period

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Share Based Compensation Arrangement by Share Based Payment Award, Fair Value Assumptions, Expected Dividend Rate, Maximum

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Share Based Compensation Arrangement by Share Based Payment Award, Options, Vested in Period, Total Intrinsic Value

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The amount of expense, net of income tax, 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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As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

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The weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, using a decimal to express in number of years.

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

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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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Description of the period of time over 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, which may be expressed in a variety of ways (for example, in years, month and year).

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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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The intrinsic value of equity-based payment equity instruments, excluding stock (or unit) options, that vested during the reporting period as calculated by applying the disclosed pricing methodology.

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The maximum period of time an equity-based award is expected to be outstanding. An equity-based award's expected term is generally determined based on, among other factors, the instrument's contractual term and the effects of employees' expected exercise and post-vesting employment termination behavior.

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The minimum period of time an equity-based award is expected to be outstanding. An equity-based award's expected term is generally determined based on, among other factors, the instrument's contractual term and the effects of employees' expected exercise and post-vesting employment termination behavior.

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The maximum risk-free interest rate assumption that is used in valuing an option on its own shares.

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The minimum risk-free interest rate assumption that is used in valuing an option on its own shares.

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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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The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan.

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

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The weighted average remaining life of the exercisable stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

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