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The fair value of equity-based awards other than options that have vested and are to be settled, as of the reporting date, that is included in other current liabilities on the balance sheet.

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Aggregate carrying value as of the balance sheet date of the liabilities for deferred compensation arrangements payable after one year (or the normal operating cycle, if longer). Represents currently earned compensation under cash arrangements (such as a profit-sharing plan, rabbi trust, and employee contract--excluding equity-based arrangements) that is not actually paid until a later date.

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

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The weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect during the reporting period as a result of the occurrence of a terminating event specified in the contractual agreement of the plan.

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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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The weighted average fair value at grant date for nonvested equity-based awards issued 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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The total fair value of equity-based awards for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The 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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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

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The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices of vested portions of options outstanding and currently exercisable under the option plan as of the balance sheet date.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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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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The weighted average period between the balance sheet date and expiration for all awards outstanding under the plan, which may be expressed in a decimal value for number of years.

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The weighted average of per share prices paid for shares purchased on the open market for issuance to employees under the plan.

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Share-Based and Long-Term Incentive Compensation, Activity and Additional Disclosures (Details) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	6 Months Ended
	Jul. 02, 2011	Jul. 03, 2010	Jan. 01, 2011
Fixed value cash awards
Fair value of long-term incentive compensation	$ 18
Long-term incentive compensation, vesting period	three to six
Unrecognized long-term incentive compensation expense	6
Weighted average period of recognition for long-term incentive compensation (in years)	3
Accrued long-term incentive compensation	12
Accrued long-term incentive compensation included in other current liabilities	10
Accrued long-term incentive compensation included in long-term liabilities	2		10
Cash-Settled Restricted or Performance Stock Units [Member]
Share-based compensation [Abstract]
Vesting period	three
Vesting rights	three-year period
Share-based compensation, additional disclosures [Abstract]
Unrecognized share-based compensation expense	23
Weighted average period of recognition (in years)	2
Share price (in dollars per share)	$ 30
Fair value of awards vested and settled	17	16
Accrued dividends included in the fair value of units vested and to be settled	2	1
Fair value of units vested and to be settled	48		40
Fair value of units vested and to be settled, included in other current liabilities	36		14
Fair value of units vested and to be settled, included in other long-term liabilities	12		26
Approximate percentage of annual director compensation paid (in hundredths)	50.00%
Fair value of units paid to directors vested and to be settled included in long-term liabilities	20		14
Summary of activity, equity instruments other than options [Roll Forward]
Not vested beginning of year (in shares)	2,627
Granted (in shares)	447
Vested and settled (in shares)	(651)
Forfeited (in shares)	(6)
Not vested at end of period (in shares)	2,417
Not vested units at period end subject to:
Time vesting requirements (in shares)	439
Performance requirements (in shares)	1,978
Summary of activity, equity instruments other than options, additional disclosures [Abstract]
Weighted average grant date fair value per share, not vested beginning of year (in dollars per share)	$ 12
Weighted average grant date fair value per share, granted (in dollars per share)	$ 24
Weighted average grant date fair value per share, vested and settled (in dollars per share)	$ 19
Weighted average grant date fair value per share, forfeited (in dollars per share)	$ 17
Weighted average grant date fair value per share, not vested at end of period (in dollars per share)	$ 12
Aggregate current value, not vested at end of period	73
Aggregate current value, not vested at end of period subject to time vesting requirements	13
Aggregate current value, not vested at end of period subject to performance requirements	60
Additional disclosures [Abstract]
Term of awards (in years)	three
Stock-Settled Restricted Stock Units [Member]
Share-based compensation, additional disclosures [Abstract]
Unrecognized share-based compensation expense	10
Weighted average period of recognition (in years)	2
Summary of activity, equity instruments other than options [Roll Forward]
Not vested beginning of year (in shares)	369
Granted (in shares)	241
Vested and settled (in shares)	0
Forfeited (in shares)	0
Not vested at end of period (in shares)	610
Summary of activity, equity instruments other than options, additional disclosures [Abstract]
Weighted average grant date fair value per share, not vested beginning of year (in dollars per share)	$ 20
Weighted average grant date fair value per share, granted (in dollars per share)	$ 24
Weighted average grant date fair value per share, vested and settled (in dollars per share)	$ 0
Weighted average grant date fair value per share, forfeited (in dollars per share)	$ 0
Weighted average grant date fair value per share, not vested at end of period (in dollars per share)	$ 21
Aggregate current value, not vested at end of period	18
Additional disclosures [Abstract]
Term of awards (in years)	three
Stock Options [Member]
Share-based compensation [Abstract]
Vesting period	four
Share-based compensation, additional disclosures [Abstract]
Unrecognized share-based compensation expense	7
Weighted average period of recognition (in years)	3
Summary of activity, equity instruments other than options [Roll Forward]
Not vested beginning of year (in shares)	7,416
Granted (in shares)	431
Vested and settled (in shares)	(714)
Forfeited (in shares)	(29)
Not vested at end of period (in shares)	7,104
Summary of activity, equity instruments other than options, additional disclosures [Abstract]
Weighted average grant date fair value per share, not vested beginning of year (in dollars per share)	$ 15
Weighted average grant date fair value per share, granted (in dollars per share)	$ 24
Weighted average grant date fair value per share, vested and settled (in dollars per share)	$ 15
Weighted average grant date fair value per share, forfeited (in dollars per share)	$ 14
Weighted average grant date fair value per share, not vested at end of period (in dollars per share)	$ 16
Exercisable at end of period (in shares)	5,158
Additional disclosures [Abstract]
Weighted average exercise price per share, exercisable at end of period (in dollars per share)	$ 16
Weighted average remaining contractual term, outstanding at end of period (in years)	6
Weighted average remaining contractual term, exercisable at end of period (in years)	6
Aggregate intrinsic value (current value less exercise price), outstanding at end of period	101
Aggregate intrinsic value (current value less exercise price), exercisable at end of period	$ 71
Term of awards (in years)	ten
Fair value valuation assumptions [Abstract]
Expected dividend yield (in hundredths)	2.20%	3.20%
Expected stock price volatility (in hundredths)	65.00%	66.60%
Risk-free interest rate (in hundredths)	3.30%	3.20%
Expected life of options (in years)	8	8
Weighted average estimated fair value of options at grant date (in dollars per share)	$ 13.40	$ 10.23