Capital Stock (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred stock, shares authorized	25,000,000	25,000,000	25,000,000
Preferred stock, shares outstanding	0	0	0
Common stock, shares authorized	1,500,000,000	1,500,000,000	1,500,000,000
Common stock, par value (usd per share)	$ 0.01	$ 0.01	$ 0.01
Common stock shares outstanding, net of treasury stock	239,500,000	296,600,000
Treasury stock, shares	365,800,000	307,900,000
Total intrinsic value of stock options exercised	$ 0.7	$ 9.7	$ 26.3
Stock Options [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of award plans	4 years
Share based payment award contractual term	6 years
Stock Options [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of award plans	5 years
Share based payment award contractual term	10 years
Stock Options [Member] \| 2007 Equity and Incentive Award Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards available for grant (in shares)	5,500,000
Stock Options [Member] \| 2011 Equity and Incentive Award Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards available for grant (in shares)	13,600,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awarded (in shares)	695,816	1,470,625	1,129,780
Restricted stock compensation expense	13.1	10.5	6.1
Restricted stock awarded (value)	14.2	6.6	2.5
Unrecognized compensation costs on nonvested awards	37.1
Nonvested awards weighted average period of recognition	1 year 7 months 6 days
Restricted Stock [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of award plans	3 years
Restricted Stock [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of award plans	5 years
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of award plans	3 years
Award shares issued in period (in shares)	1,100,000
Stock award compensation expense	10.0
Common Stock Option Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs on nonvested awards	$ 32.4
Nonvested awards weighted average period of recognition	2 years 3 months 18 days

Share Based Compensation Arrangement By Share Based Payment Award Contractual Term

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Face amount or stated value of common stock per share; generally not indicative of the fair market value per share.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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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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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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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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Number of share instruments newly issued under a share-based compensation plan.

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Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.

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The noncash expense that accounts for the value of stock or unit options distributed to employees as compensation.

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